Keithley 17x USB Adapter

The 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.

Tronxy P802M: Controller Upgrade to 32 bits

Inspired 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.

SSD1306 OLED Display Library for MSP430G2 TI LauchPad

This 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.

Tronxy P802M: Hotend Replacement

Psst! 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 […]

Keithley 177 Power Supply Replacement

After the transformer in my Keithley 177 grenaded I set about designing a replacement power supply.

Analogic AN3100 DC Voltage Standard

After 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 […]

Benchtop DMM Keithley 177 and Keithley 179 Repair

I 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.

	Sam Perry on Keithley 17x USB Adapter
	Dave Hartman AC2GL on Keithley 17x USB Adapter
	Sam Perry on SSD1306 OLED Display Library f…
	Dinamo Max on Tronxy P802M: Controller Upgra…
	Anonymous on SSD1306 OLED Display Library f…