https://samueldperry.com/2026/01/01/whirlpool-whadus5-filter-mounting-brackets/https://samueldperry.com/wp-content/uploads/2026/01/pxl_20260101_160825179.mp_.jpgPXL_20260101_160825179.MPhttps://samueldperry.com/wp-content/uploads/2026/01/pxl_20260101_160740333.mp_.jpgPXL_20260101_160740333.MPhttps://samueldperry.com/wp-content/uploads/2026/01/pxl_20260101_140239131.mp_.jpgPXL_20260101_140239131.MPhttps://samueldperry.com/wp-content/uploads/2026/01/pxl_20260101_140158396.mp_.jpgPXL_20260101_140158396.MPhttps://samueldperry.com/wp-content/uploads/2026/01/pxl_20260101_135911809.mp_.jpgPXL_20260101_135911809.MPhttps://samueldperry.com/wp-content/uploads/2026/01/screenshot-from-2026-01-01-10-11-59.pngScreenshot From 2026-01-01 10-11-59https://samueldperry.com/wp-content/uploads/2026/01/pxl_20260101_141743265.mp_.jpgPXL_20260101_141743265.MPhttps://samueldperry.com/wp-content/uploads/2026/01/pxl_20260101_141727814.mp_.jpgPXL_20260101_141727814.MPhttps://samueldperry.com/wp-content/uploads/2026/01/pxl_20260101_134859207.mp_.jpgPXL_20260101_134859207.MP2026-01-01T16:32:07+00:00monthlyhttps://samueldperry.com/2025/03/18/breadboard-power-jumper/https://samueldperry.com/wp-content/uploads/2025/03/breadboard_power_jumper_in_use.jpgbreadboard_power_jumper_in_usehttps://samueldperry.com/wp-content/uploads/2025/03/breadboard_power_jumper_pcb_layout.pngbreadboard_power_jumper_pcb_layouthttps://samueldperry.com/wp-content/uploads/2025/03/breadboard_pwr_jumper.pngbreadboard_pwr_jumperhttps://samueldperry.com/wp-content/uploads/2025/03/breadboard_edge_rails_jumper.jpgbreadboard_edge_rails_jumper2025-03-18T22:38:48+00:00monthlyhttps://samueldperry.com/2025/02/15/circuit-protection-with-discrete-components/https://samueldperry.com/wp-content/uploads/2025/02/circuit_protection_overvlotage_instable.pngcircuit_protection_overvlotage_instablehttps://samueldperry.com/wp-content/uploads/2025/02/circuit_protection_overvoltage_load.pngcircuit_protection_overvoltage_loadhttps://samueldperry.com/wp-content/uploads/2025/02/circuit_protection_overvoltage_noload.pngcircuit_protection_overvoltage_noloadhttps://samueldperry.com/wp-content/uploads/2019/01/circuit_protection_sch.pngcircuit_protection_schReverse Polarity and Overvoltage Protection2025-02-15T21:38:33+00:00monthlyhttps://samueldperry.com/cnc-3018-pro-router/https://samueldperry.com/wp-content/uploads/2025/01/3018_pro_isolated.png3018_pro_isolatedhttps://samueldperry.com/wp-content/uploads/2024/12/3018_pro_wasteboard.png3018_pro_wasteboard2025-01-29T21:54:09+00:00weekly0.6https://samueldperry.com/2025/01/29/cnc-3018-pro-router-isolated-probe/https://samueldperry.com/wp-content/uploads/2025/01/cnc_3018_isolated_probe_plugged_in.jpgCNC_3018_isolated_probe_plugged_inhttps://samueldperry.com/wp-content/uploads/2025/01/cnc_3018_isolated_probe_wire_routing.jpgCNC_3018_isolated_probe_wire_routinghttps://samueldperry.com/wp-content/uploads/2025/01/cnc_3018_isolated_probe_testing.jpgCNC_3018_isolated_probe_testinghttps://samueldperry.com/wp-content/uploads/2025/01/cnc_3018_isolated_probe.jpgCNC_3018_isolated_probehttps://samueldperry.com/wp-content/uploads/2025/01/cnc_3018_isolated_probe_controller_pins.jpgCNC_3018_isolated_probe_controller_pinshttps://samueldperry.com/wp-content/uploads/2025/01/cnc_3018_isolated_probe_case_back.pngCNC_3018_isolated_probe_case_backIsolated Probe Mounting Case Backhttps://samueldperry.com/wp-content/uploads/2025/01/cnc_3018_isolated_probe_case_front.pngCNC_3018_isolated_probe_case_frontIsolated Probe Mounting Case Fronthttps://samueldperry.com/wp-content/uploads/2025/01/cnc_3018_isolated_probe_pcb_layout.pngCNC_3018_isolated_probe_pcb_layoutIsolated Probe PCB Layouthttps://samueldperry.com/wp-content/uploads/2025/01/cnc_3018_isolated_probe_case.jpgCNC_3018_isolated_probe_casehttps://samueldperry.com/wp-content/uploads/2025/01/pxl_20250126_201607476.mp_.jpgCNC_3018_isolated_pcb_bottomIsolated Probe PCB Bottomside2025-09-29T08:10:47+00:00monthlyhttps://samueldperry.com/2024/12/24/cnc-3018-wasteboard/https://samueldperry.com/wp-content/uploads/2024/12/screenshot-from-2024-12-24-10-08-11-1.pngScreenshot From 2024-12-24 10-08-11https://samueldperry.com/wp-content/uploads/2024/12/pxl_20241224_145837056.mp_.jpgPXL_20241224_145837056.MPhttps://samueldperry.com/wp-content/uploads/2024/12/screenshot-from-2024-12-24-09-06-50-1.pngScreenshot From 2024-12-24 09-06-50https://samueldperry.com/wp-content/uploads/2024/12/screenshot-from-2024-12-24-09-49-49-1.pngScreenshot From 2024-12-24 09-49-49https://samueldperry.com/wp-content/uploads/2024/12/mvimg_20200704_135544.jpgMVIMG_20200704_1355442024-12-24T15:37:39+00:00monthlyhttps://samueldperry.com/2024/03/23/lasko-pedestal-fan-remote/https://samueldperry.com/wp-content/uploads/2024/03/lasko_remote_01-1.jpglasko_remote_01-1https://samueldperry.com/wp-content/uploads/2024/03/lasko_pcb.pnglasko_pcbhttps://samueldperry.com/wp-content/uploads/2024/03/lasko_enclosure.pnglasko_enclosurehttps://samueldperry.com/wp-content/uploads/2024/03/lasko_remote_01.jpglasko_remote_01https://samueldperry.com/wp-content/uploads/2024/03/lasko_remotes.jpglasko_remoteshttps://samueldperry.com/wp-content/uploads/2024/03/lasko_remote_03.jpglasko_remote_03https://samueldperry.com/wp-content/uploads/2024/03/lasko_remote_02.jpglasko_remote_02https://samueldperry.com/wp-content/uploads/2024/03/lasko_schematic.pnglasko_schematichttps://samueldperry.com/wp-content/uploads/2024/03/04_lasko_timer.png04_lasko_timerhttps://samueldperry.com/wp-content/uploads/2024/03/03_lasko_temperature.png03_lasko_temperature2024-05-05T21:40:39+00:00monthlyhttps://samueldperry.com/2023/03/04/smart-smartykat-toy/https://samueldperry.com/wp-content/uploads/2023/03/09_skcc_done.jpg09_skcc_donehttps://samueldperry.com/wp-content/uploads/2023/03/08_skcc_hot-snot.jpg08_skcc_hot-snothttps://samueldperry.com/wp-content/uploads/2023/03/07_skcc_modified-inside.jpg07_skcc_modified-insidehttps://samueldperry.com/wp-content/uploads/2023/03/06_skcc_lab-assistant.jpg06_skcc_lab-assistanthttps://samueldperry.com/wp-content/uploads/2023/03/05_skcc_breadboard.jpg05_skcc_breadboardhttps://samueldperry.com/wp-content/uploads/2023/03/skcc_schematic.pngskcc_schematichttps://samueldperry.com/wp-content/uploads/2023/03/03_skcc_stock-inside.jpg03_skcc_stock-insidehttps://samueldperry.com/wp-content/uploads/2023/03/04_skcc_craked-open.jpg04_skcc_craked-openhttps://samueldperry.com/wp-content/uploads/2023/03/01_skcc_toy.jpg01_skcc_toy2023-03-05T01:31:52+00:00monthlyhttps://samueldperry.com/2022/08/13/motorcycle-electronic-flasher-relay/https://samueldperry.com/wp-content/uploads/2022/08/front_indicator.jpgfront_indicatorhttps://samueldperry.com/wp-content/uploads/2022/08/flasher_relay_potted.jpgflasher_relay_pottedhttps://samueldperry.com/wp-content/uploads/2022/08/bare_pigtail_connector.jpgbare_pigtail_connectorhttps://samueldperry.com/wp-content/uploads/2022/08/bare_integrated_connector.jpgbare_integrated_connectorhttps://samueldperry.com/wp-content/uploads/2022/08/original_flasher_relay.pngoriginal_flasher_relayhttps://samueldperry.com/wp-content/uploads/2022/08/electronic_flasher_schema.pngelectronic_flasher_schema2022-08-14T01:13:53+00:00monthlyhttps://samueldperry.com/motorcycle/https://samueldperry.com/wp-content/uploads/2022/08/electronic_flasher_relay.pngelectronic_flasher_relay2022-08-13T12:52:16+00:00weekly0.6https://samueldperry.com/2021/08/05/key-box-birdhouse/2021-08-08T18:30:11+00:00monthlyhttps://samueldperry.com/2021/07/25/modifying-a-boot-dryer/2021-07-25T14:34:51+00:00monthlyhttps://samueldperry.com/2021/06/07/manual-pick-and-place-smd-vacuum/https://samueldperry.com/wp-content/uploads/2021/06/smd_vacuum_schematic-e1623011402781.pngsmd_vacuum_schematichttps://samueldperry.com/wp-content/uploads/2021/06/smd_vacuum_cover.jpgsmd_vacuum_cover2021-06-07T19:32:54+00:00monthlyhttps://samueldperry.com/2021/04/02/samc21-development-using-visual-studio-code/2021-04-03T00:37:40+00:00monthlyhttps://samueldperry.com/canalog/2021-02-10T02:42:17+00:00weekly0.6https://samueldperry.com/2021/01/02/cr2032-simulator/2021-01-02T18:17:22+00:00monthlyhttps://samueldperry.com/tronxy-p802ma/https://samueldperry.com/wp-content/uploads/2018/03/tronxy_extruderfan2.pngTronxy_ExtruderFanhttps://samueldperry.com/wp-content/uploads/2017/12/tronxy_thumbscrews.pngTronxy_ThumbScrewshttps://samueldperry.com/wp-content/uploads/2017/12/tronxy_regidity.pngTronxy_Regidityhttps://samueldperry.com/wp-content/uploads/2017/12/tronxy_buildsetupthoughts.pngTronxy_BuildSetupThoughts2020-11-02T14:53:03+00:00weekly0.6https://samueldperry.com/2020/11/04/18650-battery-shield-keep-alive-circuit/2024-01-14T14:49:43+00:00monthlyhttps://samueldperry.com/2020/10/10/tronxy-p802m-final-upgrade/2020-08-10T23:32:15+00:00monthlyhttps://samueldperry.com/2020/09/01/cnc-3018-pro-router-adding-endstops/2026-01-01T15:38:39+00:00monthlyhttps://samueldperry.com/2020/08/10/cnc-3018-pro-router-build-setup-and-thoughts/https://samueldperry.com/wp-content/uploads/2020/06/3018_pro.png3018_pro2025-09-18T20:59:13+00:00monthlyhttps://samueldperry.com/2020/07/01/matrix-technology-mpm-1010-digital-power-meter/https://samueldperry.com/wp-content/uploads/2020/06/mpm1010_featured.jpgmpm1010_featured2021-01-01T14:27:29+00:00monthlyhttps://samueldperry.com/2020/06/12/razer-mouse-middle-click-failure/2023-01-31T08:24:09+00:00monthlyhttps://samueldperry.com/2020/05/27/keithley-17x-usb-adapter/https://samueldperry.com/wp-content/uploads/2020/05/center_punch-1.jpgcenter_punch2020-05-28T23:13:18+00:00monthlyhttps://samueldperry.com/2019/04/19/tronxy-p802ma-hotend-replacement/2019-07-22T22:18:13+00:00monthlyhttps://samueldperry.com/2017/03/26/tronxy-prusa-i3-p802ma-thumb-screws/https://samueldperry.com/wp-content/uploads/2017/03/2017-03-26-18-47-07.jpg2017-03-26 18.47.07Modification Installedhttps://samueldperry.com/wp-content/uploads/2017/03/2017-03-26-18-44-08.jpg2017-03-26 18.44.08Finished Thumb Screw and Remaining Materialhttps://samueldperry.com/wp-content/uploads/2017/03/thumb-nut-drawing-v5.pngthumb nut drawing v5Thumb Nut Drawing2019-07-21T23:24:35+00:00monthlyhttps://samueldperry.com/2017/05/21/tronxy-p802m-rigidity-modifications/https://samueldperry.com/wp-content/uploads/2017/05/2017-05-28-07-14-38.jpg2017-05-28 07.14.38This was printed without the U channel supports. Notice bands rippled surface finishhttps://samueldperry.com/wp-content/uploads/2017/05/2017-05-28-07-13-53.jpg2017-05-28 07.13.53This was printed with the U channel supports, notice the consistent surface finish.https://samueldperry.com/wp-content/uploads/2017/05/2017-05-21-18-08-16.jpg2017-05-21 18.08.16https://samueldperry.com/wp-content/uploads/2017/05/2017-05-21-18-05-51.jpg2017-05-21 18.05.51https://samueldperry.com/wp-content/uploads/2017/05/2017-05-21-18-05-38.jpg2017-05-21 18.05.38https://samueldperry.com/wp-content/uploads/2017/05/2017-05-21-18-05-27.jpg2017-05-21 18.05.27https://samueldperry.com/wp-content/uploads/2017/05/2017-05-21-18-05-19.jpg2017-05-21 18.05.19https://samueldperry.com/wp-content/uploads/2017/05/2017-05-14-19-47-27.jpg2017-05-14 19.47.27Shimming y-axis rodshttps://samueldperry.com/wp-content/uploads/2017/05/2017-05-14-19-41-59.jpg2017-05-14 19.41.59https://samueldperry.com/wp-content/uploads/2017/05/2017-05-14-19-41-50.jpg2017-05-14 19.41.50Fits nicely on nut2019-07-21T23:23:19+00:00monthlyhttps://samueldperry.com/2018/03/04/tronxy-p802ma-extruder-fan-replacment/https://samueldperry.com/wp-content/uploads/2018/03/2018-03-04-13-02-52.jpg2018-03-04 13.02.52https://samueldperry.com/wp-content/uploads/2018/03/2018-03-04-11-15-40.jpg2018-03-04 11.15.40A little cable managment and the printer is repaired.https://samueldperry.com/wp-content/uploads/2018/03/2018-03-04-11-12-26.jpg2018-03-04 11.12.26Since the connector I had avalable was not a locking connector I used tape to lock the connectors togetherhttps://samueldperry.com/wp-content/uploads/2018/03/2018-03-04-11-07-07.jpgCrimp Conector On PrinterCrimp the opposite connector on the 3D printer wiring harness, only power and ground are needed.https://samueldperry.com/wp-content/uploads/2018/03/2018-03-04-11-00-56.jpgRemove Old FanRemove Old Fanhttps://samueldperry.com/wp-content/uploads/2018/03/2018-03-04-10-57-09-e1520179141106.jpgReverse polarity prevention.Reverse polarity prevention.https://samueldperry.com/wp-content/uploads/2018/03/2018-03-04-10-51-27-e1520179163254.jpgcrimpCrimp it good and tight with a nice set of crimpershttps://samueldperry.com/wp-content/uploads/2018/03/2018-03-04-10-46-09.jpgPoint of no returnPoint of no returnhttps://samueldperry.com/wp-content/uploads/2018/03/2018-03-04-10-42-34-e1520179190349.jpgRemove sheathingRemove factory connector and sheathing.https://samueldperry.com/wp-content/uploads/2018/03/2018-03-04-10-41-39-e1520179203898.jpgreplacement connectorThe only type of connector I have on hand.2019-07-21T23:19:59+00:00monthlyhttps://samueldperry.com/2019/07/21/tronxy-p802m-controller-upgrade-to-32-bits/2021-09-12T02:53:34+00:00monthlyhttps://samueldperry.com/2017/03/26/tronxy-prusa-i3-p802ma-build-setup-and-initial-thoughts/https://samueldperry.com/wp-content/uploads/2017/03/2017-04-10-23-45-32.jpg2017-04-10 23.45.32https://samueldperry.com/wp-content/uploads/2017/03/2017-03-26-20-28-10.jpg2017-03-26 20.28.1020mm Calibration Cube Using the Last of the Ugly Green Filamenthttps://samueldperry.com/wp-content/uploads/2017/03/s1.pngS1https://samueldperry.com/wp-content/uploads/2017/03/2017-03-26-13-49-18-e1490552649589.jpg2017-03-26 13.49.183DBenchyhttps://samueldperry.com/wp-content/uploads/2017/03/2017-03-26-13-50-40.jpg2017-03-26 13.50.40https://samueldperry.com/wp-content/uploads/2017/03/2017-03-26-13-50-54.jpg2017-03-26 13.50.54Wing Nuts, Hard on the Fingershttps://samueldperry.com/wp-content/uploads/2017/03/2017-03-26-13-50-17.jpg2017-03-26 13.50.17Lead Screw and Guide need to be Parallelhttps://samueldperry.com/wp-content/uploads/2017/03/2017-03-26-13-50-07.jpg2017-03-26 13.50.07Left Lead Screw Shimedhttps://samueldperry.com/wp-content/uploads/2017/03/2017-03-26-13-49-50.jpg2017-03-26 13.49.50Left Lead Screw Shimmedhttps://samueldperry.com/wp-content/uploads/2017/03/2017-03-26-13-51-03-e1490552096497.jpg2017-03-26 13.51.03Tronxy Prusa i3 P802MA 2019-07-21T23:17:19+00:00monthlyhttps://samueldperry.com/2014/11/16/breakout-the-msop16/https://samueldperry.com/wp-content/uploads/2014/11/2014-11-12-18-10-30.jpgSize comparisionhttps://samueldperry.com/wp-content/uploads/2014/11/2014-11-12-17-54-13.jpgHolding the breakout boardhttps://samueldperry.com/wp-content/uploads/2014/11/schematic.pngSchematichttps://samueldperry.com/wp-content/uploads/2014/11/layout.pngLayouthttps://samueldperry.com/wp-content/uploads/2014/11/2014-11-12-18-10-08-e1416180606184.jpgLTC2946 BreakoutLTC2946 soldered on breakout board2019-07-21T23:10:55+00:00monthlyhttps://samueldperry.com/2019/05/24/ssd1306-oled-display-library-for-msp430g2-ti-lauchpad/2024-05-28T08:07:14+00:00monthlyhttps://samueldperry.com/2019/03/03/keithley-177-power-supply-replacement/2020-07-05T21:14:41+00:00monthlyhttps://samueldperry.com/2019/01/12/benchtop-dmm-keithley-177-and-keithley-179-repair/https://samueldperry.com/wp-content/uploads/2019/01/img_20190112_162139.jpgIMG_20190112_162139https://samueldperry.com/wp-content/uploads/2019/01/mvimg_20190112_114609.jpgMVIMG_20190112_114609https://samueldperry.com/wp-content/uploads/2019/01/mvimg_20190112_105014.jpgMVIMG_20190112_105014https://samueldperry.com/wp-content/uploads/2019/01/beforeafter.jpgbeforeAfterhttps://samueldperry.com/wp-content/uploads/2019/01/mvimg_20190112_102518.jpgMVIMG_20190112_102518https://samueldperry.com/wp-content/uploads/2019/01/mvimg_20190112_094543_exported_stabilized_1334194702704752659.gifMVIMG_20190112_094543_exported_stabilized_1334194702704752659https://samueldperry.com/wp-content/uploads/2019/01/img_20190113_134423.jpgIMG_20190113_134423https://samueldperry.com/wp-content/uploads/2019/01/img_20190112_160603.jpgIMG_20190112_160603https://samueldperry.com/wp-content/uploads/2019/01/img_thermal_1547324849466.jpgSPH-L710, Android 4.4.2SPH-L710, Android 4.4.2https://samueldperry.com/wp-content/uploads/2019/01/img_20190112_141507.jpgIMG_20190112_1415072019-02-15T22:20:24+00:00monthlyhttps://samueldperry.com/2019/02/09/analogic-an3100-dc-voltage-standard/2019-02-15T22:00:30+00:00monthlyhttps://samueldperry.com/2018/09/03/base-convert-rev-a/https://samueldperry.com/wp-content/uploads/2018/09/05_baseconvert_frontlayout.png05_BaseConvert_FrontLayouthttps://samueldperry.com/wp-content/uploads/2018/09/04_baseconvert_side.png04_BaseConvert_Sidehttps://samueldperry.com/wp-content/uploads/2018/09/03_baseconvert_back.png03_BaseConvert_Backhttps://samueldperry.com/wp-content/uploads/2018/09/02_baseconvert_front.png02_BaseConvert_Fronthttps://samueldperry.com/wp-content/uploads/2018/09/01_baseconvert_main.png01_BaseConvert_Main2018-09-08T18:59:55+00:00monthlyhttps://samueldperry.com/2018/09/02/base-convert-the-prototype/https://samueldperry.com/wp-content/uploads/2018/09/6829241528156409090.jpg68292415281564090902018-09-02T14:41:39+00:00monthlyhttps://samueldperry.com/2018/03/20/msp430fr2000-horn/https://samueldperry.com/wp-content/uploads/2018/03/train_horn_exploded3dcase.giftrain_horn_exploded3Dcasehttps://samueldperry.com/wp-content/uploads/2018/03/train_horn_3dview.pngtrain_horn_3dViewhttps://samueldperry.com/wp-content/uploads/2018/03/train_horn_filter.pngTrain_Horn_filterhttps://samueldperry.com/wp-content/uploads/2018/03/train_horn_ampjp.pngTrain_Horn_AmpJPhttps://samueldperry.com/wp-content/uploads/2018/03/uc_schematic1.pnguC_schematichttps://samueldperry.com/wp-content/uploads/2018/03/train_horn_ldo.pngTrain_Horn_LDOhttps://samueldperry.com/wp-content/uploads/2018/03/newccsproject_target.pngNewCCSProject_Targethttps://samueldperry.com/wp-content/uploads/2018/03/train_horn_prgwiring.pngTrain_Horn_PRGwiringhttps://samueldperry.com/wp-content/uploads/2018/03/train_horn_playled.pngTrain_Horn_PlayLEDhttps://samueldperry.com/wp-content/uploads/2018/03/train_horn_lowbattery.pngTrain_Horn_LowBattery2018-03-31T20:59:31+00:00monthlyhttps://samueldperry.com/2017/12/31/solder-fume-extractor-light/https://samueldperry.com/wp-content/uploads/2017/12/2017-12-31-13-08-14.jpg2017-12-31 13.08.14https://samueldperry.com/wp-content/uploads/2017/12/2017-12-31-13-06-44.jpg2017-12-31 13.06.44https://samueldperry.com/wp-content/uploads/2017/12/2017-12-31-13-06-23.jpg2017-12-31 13.06.23https://samueldperry.com/wp-content/uploads/2017/12/series_leds.pngseries_ledshttps://samueldperry.com/wp-content/uploads/2017/12/constant_current_pcb.pngconstant_current_pcbhttps://samueldperry.com/wp-content/uploads/2017/12/current_sink.pngcurrent_sinkhttps://samueldperry.com/wp-content/uploads/2017/12/2017-12-31-10-59-50-e1514736206234.jpgsolder fume extractor shadowLook Simba, everything the light touches is outside of where I want to solder.2018-01-06T04:06:43+00:00monthlyhttps://samueldperry.com/2016/01/17/multi-led-joule-thief/https://samueldperry.com/wp-content/uploads/2016/01/batteryswitch.pngBatterySwitchhttps://samueldperry.com/wp-content/uploads/2016/01/2016-01-16-11-00-26.jpg2016-01-16 11.00.26https://samueldperry.com/wp-content/uploads/2016/01/2016-01-16-11-06-59.jpg2016-01-16 11.06.59https://samueldperry.com/wp-content/uploads/2016/01/2016-01-16-11-07-46.jpg2016-01-16 11.07.46https://samueldperry.com/wp-content/uploads/2016/01/2016-01-16-11-07-17.jpg2016-01-16 11.07.17https://samueldperry.com/wp-content/uploads/2016/01/joule-thief.pngJoule Thiefhttps://samueldperry.com/wp-content/uploads/2016/01/2016-01-16-10-54-31.jpg2016-01-16 10.54.312017-12-29T20:38:38+00:00monthlyhttps://samueldperry.com/2016/12/18/single-led-candle-joule-thief/https://samueldperry.com/wp-content/uploads/2016/12/2016-12-17-13-22-38.jpg2016-12-17-13-22-38https://samueldperry.com/wp-content/uploads/2016/12/2016-12-17-10-24-36.jpg2016-12-17-10-24-36https://samueldperry.com/wp-content/uploads/2016/12/2016-12-17-09-53-31.jpg2016-12-17-09-53-31https://samueldperry.com/wp-content/uploads/2016/12/2016-12-17-10-14-541.jpg2016-12-17-10-14-54The finished producthttps://samueldperry.com/wp-content/uploads/2016/12/2016-12-17-10-14-07.jpg2016-12-17-10-14-07All done. I need more dead batteries.https://samueldperry.com/wp-content/uploads/2016/12/2016-12-16-17-12-51.jpg2016-12-16-17-12-51This is what happens after soldering 50 battery clips, desoldering time.https://samueldperry.com/wp-content/uploads/2016/12/2016-12-16-16-41-05.jpg2016-12-16-16-41-05The assembly stationhttps://samueldperry.com/wp-content/uploads/2016/12/2016-12-16-15-51-28.jpg2016-12-16-15-51-28LEDs solderedhttps://samueldperry.com/wp-content/uploads/2016/12/2016-12-16-12-13-44.jpg2016-12-16-12-13-44Transformer and switch solderedhttps://samueldperry.com/wp-content/uploads/2016/12/2016-12-10-11-03-07.jpg2016-12-10-11-03-07A few transistors were slightly skewed and required reworking 2017-12-29T20:38:00+00:00monthlyhttps://samueldperry.com/2017/12/03/joule-thief-measurements/https://samueldperry.com/wp-content/uploads/2017/12/2017-10-08-22-05-52.jpg2017-10-08 22.05.52https://samueldperry.com/wp-content/uploads/2017/12/2017-10-09-09-27-15.jpgMeasurement Setuphttps://samueldperry.com/wp-content/uploads/2017/12/switching-frequency-vs-input-voltage.pngSwitching Frequency vs Input Voltagehttps://samueldperry.com/wp-content/uploads/2017/12/led-current-vs-input-power.pngLED Current vs Input Powerhttps://samueldperry.com/wp-content/uploads/2017/12/on-off-voltage.pngInput Voltage for LED Operation vs R1 Resistancehttps://samueldperry.com/wp-content/uploads/2017/12/input-current-vs-input-voltage.pngInput Current vs Input Voltage2017-12-29T20:37:15+00:00monthlyhttps://samueldperry.com/2017/12/25/multi-led-joule-thief-v2/https://samueldperry.com/wp-content/uploads/2017/12/schematic.pngschematichttps://samueldperry.com/wp-content/uploads/2017/12/2017-12-25-10-57-01.jpg2017-12-25 10.57.01https://samueldperry.com/wp-content/uploads/2017/12/inhand.jpgInHandhttps://samueldperry.com/wp-content/uploads/2017/12/frontviewon.jpgFrontViewOnhttps://samueldperry.com/wp-content/uploads/2017/12/frontviewon_04.jpgFrontViewOn_04https://samueldperry.com/wp-content/uploads/2017/12/frontviewon_03.jpgFrontViewOn_03https://samueldperry.com/wp-content/uploads/2017/12/frontviewon_02.jpgFrontViewOn_02https://samueldperry.com/wp-content/uploads/2017/12/frontviewoff.jpgFrontViewOffhttps://samueldperry.com/wp-content/uploads/2017/12/backview1.jpgBackViewhttps://samueldperry.com/wp-content/uploads/2017/12/stencil.jpgstencil2022-04-04T20:12:30+00:00monthlyhttps://samueldperry.com/joule-thief/https://samueldperry.com/wp-content/uploads/2017/12/jtm_batterylife.pngJTM_BatteryLifehttps://samueldperry.com/wp-content/uploads/2017/12/jtm_baseresistor.pngJTM_BaseResistorhttps://samueldperry.com/wp-content/uploads/2017/12/multiled.pngMultiLEDhttps://samueldperry.com/wp-content/uploads/2017/12/multiledv22.pngMultiLEDV2https://samueldperry.com/wp-content/uploads/2017/12/jtcandle.pngJTCandle2017-12-29T20:35:15+00:00weekly0.6https://samueldperry.com/2017/12/29/joule-thief-measurements-battery-life/https://samueldperry.com/wp-content/uploads/2017/12/2017-10-23-19-35-46.jpg2017-10-23 19.35.46https://samueldperry.com/wp-content/uploads/2017/12/2017-10-22-17-16-07-e1514504734136.jpg2017-10-22 17.16.07https://samueldperry.com/wp-content/uploads/2017/12/jt_capacity1.pngRayovac Battery CapacityRayovac Battery Capacityhttps://samueldperry.com/wp-content/uploads/2017/12/jt_power.pngRayovac Battery Discharge CurveRayovac Battery Discharge Curvehttps://samueldperry.com/wp-content/uploads/2017/12/batterytest_rayovac_01_endingoscillations.pngBatteryTest_Rayovac_01_EndingOscillationsOscillations at end of BatteryTest_Rayovac_01https://samueldperry.com/wp-content/uploads/2017/12/batterytest_rayovac_02_allzoomcurentspike01.pngBatteryTest_Rayovac_02_AllZoomCurentSpike01Auto Scaling of battery voltage and light level to see possible oscillationshttps://samueldperry.com/wp-content/uploads/2017/12/batterytest_rayovac_02_morezoomcurentspike01.pngBatteryTest_Rayovac_02_MoreZoomCurentSpike01Further zoom in on 1st current spike in BatteryTest_Rayovac_02https://samueldperry.com/wp-content/uploads/2017/12/batterytest_rayovac_02_zoomcurentspike01.pngBatteryTest_Rayovac_02_ZoomCurentSpike01Zoom in on 1st current spike in BatteryTest_Rayovac_02https://samueldperry.com/wp-content/uploads/2017/12/batterytest_rayovac_01_zoomcurentspike011.pngBatteryTest_Rayovac_01_ZoomCurrentSpike01Zoom in on 1st current spike in BatteryTest_Rayovac_01https://samueldperry.com/wp-content/uploads/2017/12/led_ambient_cover.jpgLED_ambient_coverLED Ambient Light Cover2017-12-29T20:33:54+00:00monthlyhttps://samueldperry.com/2017/08/20/bicycle-announcer/https://samueldperry.com/wp-content/uploads/2017/08/2017-08-20-11-01-23.jpg2017-08-20 11.01.23https://samueldperry.com/wp-content/uploads/2017/08/case_model_top_off.pngcase_model_top_offcase model with top offhttps://samueldperry.com/wp-content/uploads/2017/08/case_model_clamp.pngcase_model_clampclamp modelhttps://samueldperry.com/wp-content/uploads/2017/08/case_render.pngFusion360 RenderFusion360 Renderhttps://samueldperry.com/wp-content/uploads/2017/08/2017-08-16-17-17-37.jpg2017-08-16 17.17.37the mounting clampshttps://samueldperry.com/wp-content/uploads/2017/08/2017-08-16-17-17-30.jpg2017-08-16 17.17.30different anglehttps://samueldperry.com/wp-content/uploads/2017/08/2017-08-16-17-17-08.jpg2017-08-16 17.17.08This is where it mountshttps://samueldperry.com/wp-content/uploads/2017/08/2017-08-15-20-12-15.jpg2017-08-15 20.12.15Ready to button it all uphttps://samueldperry.com/wp-content/uploads/2017/08/2017-08-15-19-52-41.jpg2017-08-15 19.52.41RGB LED mountedhttps://samueldperry.com/wp-content/uploads/2017/08/2017-08-15-19-32-12.jpg2017-08-15 19.32.12attaching speaker2017-08-27T01:13:03+00:00monthlyhttps://samueldperry.com/2017/04/30/davinci-1-0-conversion-to-laser-etcher/https://samueldperry.com/wp-content/uploads/2017/04/2017-04-30-13-22-38.jpg2017-04-30 13.22.38Laser Control Circuithttps://samueldperry.com/wp-content/uploads/2017/04/2017-04-30-13-15-07.jpg2017-04-30 13.15.07The final marking for my cycle counter enclosurhttps://samueldperry.com/wp-content/uploads/2017/04/2017-04-30-13-12-22.jpg2017-04-30 13.12.22Safety is a must have.https://samueldperry.com/wp-content/uploads/2017/04/2017-04-30-13-03-38.jpg2017-04-30 13.03.38https://samueldperry.com/wp-content/uploads/2017/04/2017-04-30-12-56-57.jpg2017-04-30 12.56.57Testing the setup on paperhttps://samueldperry.com/wp-content/uploads/2017/04/2017-04-30-12-56-44.jpg2017-04-30 12.56.44Ok laser marking, looks like I need to move a little faster to avoid excessive meltinghttps://samueldperry.com/wp-content/uploads/2017/04/laser_circuit.pnglaser_circuithttps://samueldperry.com/wp-content/uploads/2017/04/2017-04-30-12-17-53.jpg2017-04-30 12.17.53https://samueldperry.com/wp-content/uploads/2017/04/2017-04-30-12-17-37.jpg2017-04-30 12.17.372017-12-14T05:18:21+00:00monthlyhttps://samueldperry.com/2017/06/26/dps5015-power-supply-enclosure/https://samueldperry.com/wp-content/uploads/2017/06/2017-06-26-21-17-54.jpg2017-06-26 21.17.54https://samueldperry.com/wp-content/uploads/2017/06/dps5015-3d-model.pngdps5015 3d modelhttps://samueldperry.com/wp-content/uploads/2017/06/2017-06-26-21-17-09.jpg2017-06-26 21.17.09https://samueldperry.com/wp-content/uploads/2017/06/2017-06-26-21-17-03.jpg2017-06-26 21.17.03https://samueldperry.com/wp-content/uploads/2017/06/2017-06-26-21-14-39.jpg2017-06-26 21.14.39https://samueldperry.com/wp-content/uploads/2017/06/2017-06-26-21-14-28.jpg2017-06-26 21.14.282017-06-27T02:29:20+00:00monthlyhttps://samueldperry.com/2017/05/28/mantis-microscope-repair/https://samueldperry.com/wp-content/uploads/2017/05/2017-05-28-18-48-45.jpg2017-05-28 18.48.45https://samueldperry.com/wp-content/uploads/2017/05/2017-05-28-18-48-36.jpg2017-05-28 18.48.36https://samueldperry.com/wp-content/uploads/2017/05/untitled.pngUntitledhttps://samueldperry.com/wp-content/uploads/2017/05/2017-05-28-17-24-49.jpg2017-05-28 17.24.49https://samueldperry.com/wp-content/uploads/2017/05/2017-05-28-17-17-50.jpg2017-05-28 17.17.50https://samueldperry.com/wp-content/uploads/2017/05/2017-05-28-07-08-31.jpg2017-05-28 07.08.31https://samueldperry.com/wp-content/uploads/2017/05/2017-05-28-17-56-52.jpg2017-05-28 17.56.52Broken Mounting Bracket2017-05-28T23:06:06+00:00monthlyhttps://samueldperry.com/2017/04/16/3d-printed-easter-egg-2017/https://samueldperry.com/wp-content/uploads/2017/04/2017-04-15-14-23-01.jpg2017-04-15 14.23.01https://samueldperry.com/wp-content/uploads/2017/04/img_20170415_150032.jpgIMG_20170415_1500322017-04-15T23:03:49+00:00monthlyhttps://samueldperry.com/2017/04/02/xyzprinting-davinci-1-0a-upgrade-to-e3d-v6-hotend/https://samueldperry.com/wp-content/uploads/2017/04/2017-04-10-23-18-19.jpg2017-04-10 23.18.19A lot of work has gone into making this cubehttps://samueldperry.com/wp-content/uploads/2017/04/2017-04-09-11-18-04.jpg2017-04-09 11.18.04Layer Cooling Fan Installedhttps://samueldperry.com/wp-content/uploads/2017/04/2017-04-02-14-31-41.jpg2017-04-02 14.31.41https://samueldperry.com/wp-content/uploads/2017/04/2017-04-02-14-33-22.jpg2017-04-02 14.33.22The Old Hotendhttps://samueldperry.com/wp-content/uploads/2017/04/2017-04-02-10-55-50.jpg2017-04-02 10.55.50R29 Removedhttps://samueldperry.com/wp-content/uploads/2017/04/2017-04-02-10-41-56.jpg2017-04-02 10.41.56R29 removedhttps://samueldperry.com/wp-content/uploads/2017/04/2017-04-01-17-24-19.jpg2017-04-01 17.24.19Connectors wraped up with kapton tapehttps://samueldperry.com/wp-content/uploads/2017/04/2017-04-01-17-18-22.jpg2017-04-01 17.18.22Heater Connectionshttps://samueldperry.com/wp-content/uploads/2017/04/2017-04-01-16-59-41.jpg2017-04-01 16.59.41The fan and thermistor connectorhttps://samueldperry.com/wp-content/uploads/2017/04/2017-04-01-16-28-49.jpg2017-04-01 16.28.49Thermistor connection the the main board2023-11-22T17:27:31+00:00monthlyhttps://samueldperry.com/2017/01/08/dc-dc-converter-effeciency/https://samueldperry.com/wp-content/uploads/2017/01/2017-01-08-16-41-25.jpg2017-01-08-16-41-25Original Inductorhttps://samueldperry.com/wp-content/uploads/2017/01/dcdc_powerloss.pngdcdc_powerlosshttps://samueldperry.com/wp-content/uploads/2017/01/dcdc_ictemperature.pngdcdc_ictemperaturehttps://samueldperry.com/wp-content/uploads/2017/01/dcdc_efficiency.pngdcdc_efficiencyhttps://samueldperry.com/wp-content/uploads/2017/01/dcdc_converter.pngdcdc_converterSchematichttps://samueldperry.com/wp-content/uploads/2017/01/2017-01-08-15-36-20.jpg2017-01-08-15-36-20Modified for measurmentshttps://samueldperry.com/wp-content/uploads/2017/01/2017-01-08-15-35-52.jpg2017-01-08-15-35-52https://samueldperry.com/wp-content/uploads/2017/01/2017-01-08-11-36-55.jpg2017-01-08-11-36-55test setup2017-01-09T02:45:42+00:00monthlyhttps://samueldperry.com/2016/10/29/zmr250-quadcopter-upgrade-matek-hubosd-eco-h-type/https://samueldperry.com/wp-content/uploads/2016/10/2016-10-27-17-05-03.jpg2016-10-27-17-05-03https://samueldperry.com/wp-content/uploads/2016/10/2016-10-27-18-55-20.jpg2016-10-27-18-55-20The end resulthttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-27-16-58-19.jpg2016-10-27-16-58-19Final testhttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-22-17-45-351.jpg2016-10-22-17-45-35Midway through assembly, the bench is collecting stuff.https://samueldperry.com/wp-content/uploads/2016/10/2016-10-27-08-54-17.jpg2016-10-27-08-54-17https://samueldperry.com/wp-content/uploads/2016/10/connecitons.jpgconnecitonshttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-22-17-45-35.jpg2016-10-22-17-45-352016-11-08T00:35:51+00:00monthlyhttps://samueldperry.com/2016/11/06/atmospheric-pressure-data-logging-and-dst/https://samueldperry.com/wp-content/uploads/2016/11/plot.pngplot2016-11-06T16:11:24+00:00monthlyhttps://samueldperry.com/2016/10/28/rc-radio-backpack-insert/https://samueldperry.com/wp-content/uploads/2016/10/2016-10-28-19-43-07.jpg2016-10-28-19-43-07Backpackhttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-28-19-42-25.jpg2016-10-28-19-42-25in the baghttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-28-19-41-10.jpg2016-10-28-19-41-10radio in the inserthttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-28-19-41-00.jpg2016-10-28-19-41-00Completed inserthttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-28-10-31-25.jpg2016-10-28-10-31-25The inside shapehttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-28-10-27-18.jpg2016-10-28-10-27-18Corners cut offhttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-28-10-14-55.jpg2016-10-28-10-14-55https://samueldperry.com/wp-content/uploads/2016/10/2016-10-28-09-17-29.jpg2016-10-28-09-17-29layer peeled offhttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-28-09-09-53.jpg2016-10-28-09-09-53The rectangles cutouthttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-28-08-46-43.jpg2016-10-28-08-46-43This smooth layer needs to removed to allow gluing2016-10-28T23:59:33+00:00monthlyhttps://samueldperry.com/2015/05/31/a-board-of-keys/https://samueldperry.com/wp-content/uploads/2015/05/2015-05-26-17-05-42.jpg2015-05-26 17.05.42https://samueldperry.com/wp-content/uploads/2015/05/2015-05-26-17-05-36.jpg2015-05-26 17.05.36https://samueldperry.com/wp-content/uploads/2015/05/2015-05-26-17-05-29.jpg2015-05-26 17.05.29https://samueldperry.com/wp-content/uploads/2015/05/2015-05-26-17-05-12.jpg2015-05-26 17.05.122016-10-27T11:17:29+00:00monthlyhttps://samueldperry.com/2016/08/21/kd2lrp-technician-amateur-radio-license/2016-10-27T11:16:37+00:00monthlyhttps://samueldperry.com/2016/10/16/fisher-mc-3000-receiver-repair/https://samueldperry.com/wp-content/uploads/2016/10/2016-10-15-20-01-21.jpg2016-10-15-20-01-21https://samueldperry.com/wp-content/uploads/2016/10/2016-10-15-13-35-12.jpg2016-10-15-13-35-12Cord Replacedhttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-15-09-17-51.jpg2016-10-15-09-17-51Old Wiring, the black shielded ground cable is attached to one of the AC mains legs.https://samueldperry.com/wp-content/uploads/2016/10/2016-10-15-09-14-49.jpg2016-10-15-09-14-49This cord will be a good fithttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-15-09-13-47.jpg2016-10-15-09-13-47The Old Power Plughttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-15-09-05-50.jpg2016-10-15-09-05-50Bottom View of Function Switchhttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-15-08-52-57.jpg2016-10-15-08-52-57Front Panel Potshttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-15-08-52-51.jpg2016-10-15-08-52-51Function Switchhttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-15-08-52-35.jpg2016-10-15-08-52-35Analog Circuitryhttps://samueldperry.com/wp-content/uploads/2016/10/2016-10-15-08-51-29.jpg2016-10-15-08-51-29Out of the case2020-03-22T15:48:44+00:00monthlyhttps://samueldperry.com/2016/10/10/oh-deer/2016-10-16T15:54:06+00:00monthlyhttps://samueldperry.com/2016/06/25/zmr250-quadcopter-modifications-landing-skids/https://samueldperry.com/wp-content/uploads/2016/06/2016-06-25-12-15-21.jpg2016-06-25 12.15.21https://samueldperry.com/wp-content/uploads/2016/06/2016-06-25-12-15-10.jpg2016-06-25 12.15.10https://samueldperry.com/wp-content/uploads/2016/06/2016-06-25-12-14-53.jpg2016-06-25 12.14.53https://samueldperry.com/wp-content/uploads/2016/06/2016-06-25-12-14-40.jpg2016-06-25 12.14.40https://samueldperry.com/wp-content/uploads/2016/06/2016-06-25-11-44-08.jpg2016-06-25 11.44.08https://samueldperry.com/wp-content/uploads/2016/06/2016-06-25-11-43-05.jpg2016-06-25 11.43.05https://samueldperry.com/wp-content/uploads/2016/06/2016-06-25-11-42-56.jpg2016-06-25 11.42.56https://samueldperry.com/wp-content/uploads/2016/06/zmr250-skid.pngZMR250 Skidhttps://samueldperry.com/wp-content/uploads/2016/06/2016-06-25-12-15-37.jpg2016-06-25 12.15.372016-06-25T19:32:56+00:00monthlyhttps://samueldperry.com/2016/02/28/tool-etching/https://samueldperry.com/wp-content/uploads/2016/02/2016-02-28-11-18-02.jpg2016-02-28 11.18.02https://samueldperry.com/wp-content/uploads/2016/02/2016-02-27-22-49-14.jpg2016-02-27 22.49.14https://samueldperry.com/wp-content/uploads/2016/02/2016-02-27-22-47-16.jpg2016-02-27 22.47.16https://samueldperry.com/wp-content/uploads/2016/02/2016-02-27-22-48-25.jpg2016-02-27 22.48.25https://samueldperry.com/wp-content/uploads/2016/02/2016-02-27-22-48-39.jpg2016-02-27 22.48.39https://samueldperry.com/wp-content/uploads/2016/02/2016-02-27-23-16-47.jpg2016-02-27 23.16.47https://samueldperry.com/wp-content/uploads/2016/02/2016-02-27-23-16-23.jpg2016-02-27 23.16.23https://samueldperry.com/wp-content/uploads/2016/02/2016-02-27-23-12-25.jpg2016-02-27 23.12.25https://samueldperry.com/wp-content/uploads/2016/02/2016-02-27-22-50-13.jpg2016-02-27 22.50.13https://samueldperry.com/wp-content/uploads/2016/02/2016-02-27-23-17-01.jpg2016-02-27 23.17.012016-02-28T21:10:31+00:00monthlyhttps://samueldperry.com/2015/09/13/avr-dragon-attiny-adapter/https://samueldperry.com/wp-content/uploads/2015/08/3drender.png3Drenderhttps://samueldperry.com/wp-content/uploads/2015/08/2015-08-18-17-52-13.jpg2015-08-18 17.52.132015-09-13T15:15:09+00:00monthlyhttps://samueldperry.com/2015/04/13/repair-remove-that-cap/https://samueldperry.com/wp-content/uploads/2015/04/img_0175.jpgIMG_0175New Capacitor Installedhttps://samueldperry.com/wp-content/uploads/2015/04/img_0174.jpgIMG_0174Capacitor Removedhttps://samueldperry.com/wp-content/uploads/2015/04/img_0172.jpgIMG_0172Pins With Solder Removedhttps://samueldperry.com/wp-content/uploads/2015/04/img_0170.jpgIMG_0170Hakko 808 Desoldering Ironhttps://samueldperry.com/wp-content/uploads/2015/04/img_0168.jpgIMG_0168The Problem Caphttps://samueldperry.com/wp-content/uploads/2015/04/img_0167.jpgIMG_0167You Can Never Have Enough Capacitorshttps://samueldperry.com/wp-content/uploads/2015/04/img_0165.jpgIMG_0165Pentium 4 Motherboard2015-04-13T23:55:28+00:00monthlyhttps://samueldperry.com/2015/04/04/3d-printed-yoyo/https://samueldperry.com/wp-content/uploads/2015/04/screenshot-2015-04-04-17-33-00.pngScreenshot 2015-04-04 17.33.00https://samueldperry.com/wp-content/uploads/2015/04/img_0160.jpgIMG_0160The Assembly Processhttps://samueldperry.com/wp-content/uploads/2015/04/img_0159.jpgIMG_0159Finished Yo-Yohttps://samueldperry.com/wp-content/uploads/2015/04/screenshot-2015-04-04-17-33-32.pngScreenshot 2015-04-04 17.33.32CAD Model2015-04-04T23:00:55+00:00monthlyhttps://samueldperry.com/2014/12/04/calculator-counter/https://samueldperry.com/wp-content/uploads/2014/12/2014-11-18-19-17-25.jpg2014-11-18 19.17.25https://samueldperry.com/wp-content/uploads/2014/12/2014-11-18-18-53-561.jpg2014-11-18 18.53.56https://samueldperry.com/wp-content/uploads/2014/12/2014-11-18-18-01-27.jpg2014-11-18 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EL-233S2015-04-01T00:07:52+00:00monthlyhttps://samueldperry.com/2014/12/30/pen-durability-cycling-machine/https://samueldperry.com/wp-content/uploads/2014/12/img_0046.jpgIMG_0046https://samueldperry.com/wp-content/uploads/2014/12/img_0045.jpgIMG_0045https://samueldperry.com/wp-content/uploads/2014/12/img_0043.jpgIMG_0043https://samueldperry.com/wp-content/uploads/2014/12/img_0041.jpgIMG_0041https://samueldperry.com/wp-content/uploads/2014/12/img_0048.jpgIMG_00482024-06-18T15:35:03+00:00monthlyhttps://samueldperry.com/2015/04/01/an-office-prank/https://samueldperry.com/wp-content/uploads/2015/03/img_0122.jpgIMG_0122Ringer Solenoidhttps://samueldperry.com/wp-content/uploads/2015/03/img_0121.jpgIMG_0121Ringer MOSFET Circuithttps://samueldperry.com/wp-content/uploads/2015/03/img_0120.jpgIMG_0120Arduino Controllerhttps://samueldperry.com/wp-content/uploads/2015/03/img_0119.jpgIMG_0119Ready for the Coverhttps://samueldperry.com/wp-content/uploads/2015/03/img_0118.jpgIMG_0118https://samueldperry.com/wp-content/uploads/2015/03/img_0117.jpgIMG_0117Power Switchhttps://samueldperry.com/wp-content/uploads/2015/03/img_0114.jpgIMG_01142015-03-31T22:41:33+00:00monthlyhttps://samueldperry.com/2014/11/02/the-start-of-something-new/2014-11-06T23:10:24+00:00monthlyhttps://samueldperry.comdaily1.02026-01-01T16:32:07+00:00