While working on CAD for a update to the Tronxy P802M 3D printer I lost the ability to navigate FreeCAD using the middle mouse button. This was disruptive to my productivity and I have spent a considerable amount of time tracking down the problem. My first thought with anything computer related is software so I […]
Read More Razer Mouse Middle Click FailureThe following device is used to connect the Keithley 177 and 179 digital multimeter to the PC. The USB Adapter is a serial COM port enabling the user to use simple serial terminal programs to read data from the Keithley multimeter. The device fully isolates the PC from the multimeter through optoisolators and has no impact on the meters performance. The Keithley 17x USB Adapter is a simple device for connecting two great multimeters to the PC to further increase their value to hobbyists by enabling data logging.
Read More Keithley 17x USB AdapterInspired by a YouTube video I decided to upgrade the controller on my Tronxy P802M from the Melzi 2.0 8 bit controller to a 32 bit BIGTREETECH SKR V1.3 controller. Below is a guide for anyone else looking to upgrade the controller on their Tronxy P802M to the SKR V1.3.
Read More Tronxy P802M: Controller Upgrade to 32 bitsThis is a simple library for interfacing a MSP430G2 LaunchPad with a 128×64 SSD1306 OLED display using i2c. Much of the code for the display has been borrowed from Adafuit’s wonderful SSD1306 Arduino library with modifications so that it will work with the limited RAM available on the MSP430G2553.
Read More SSD1306 OLED Display Library for MSP430G2 TI LauchPadPsst! Looking for more? Check out the Tronxy P802M page with links to other articles about modifying and improving the Tronxy P802M 3D printer. My Tronxy P802MA 3D printer started to act up so I set about replacing the hotend which I suspected as the main cause. I picked up a set of 5 hotends […]
Read More Tronxy P802M: Hotend ReplacementAfter the transformer in my Keithley 177 grenaded I set about designing a replacement power supply.
Read More Keithley 177 Power Supply ReplacementAfter picking up and repairing two Keithley multimeters I found it necessary to have a way to calibrate them. I have a DMMCheck Plus voltage standard but that is set to a fixed 5VDC, not very useful when the calibration procedure calls for 1.900VDC. Luckily I was able to pick up a used Analogic AN3100 […]
Read More Analogic AN3100 DC Voltage StandardI picked up two used Keithley benchtop digital multimeters from eBay that are in need of repairs. They were sold as working but as is often the case with eBay sellers who are unfamiliar with measurement equipment, they both have some issues that I intend to fix in this short article.
Read More Benchtop DMM Keithley 177 and Keithley 179 RepairIntroduction Base Convert PL-47710 Rev. A is a simple desk/handheld device to convert between hexadecimal, decimal, and binary. The unit features separate displays for each number base for easy comparison between the three bases. User input is possible using 16 alphanumeric keys and an input mode selector switch. The device is powered by 4 AA […]
Read More Base Convert Rev AInspired in part by the Hex Game from The Ben Heck Show but with the simplicity of the Microsoft Calculator in programmer mode, this project aims to create a handheld/desktop calculator for converting between HEX, DEC, and BIN base numbers up to 16 bit. I find myself during times of programing always checking my number conversions with the MS calculator. I would prefer to have a physical calculator on my desk since I prefer the tactile feel over an on screen calculator.
Read More Base Convert – The Prototype
SD Perry 