OpenFAN - PC Fan controller DIY

OpenFAN - PC Fan controller DIYOpenFAN Temporarily out of stock. New units are being manufactured and will be available in August 2026. An Open source, open hardware 12V PWM fan controller for the hobbyists and hackers! This fan controller allows you to control 10 PWM fans over USB or remotely over network. OpenFAN gives you two ways to control each fan: Traditional (PWM): Set target PWM and the fan will spin at whatever RPM it is designed to spin with that PWM. (ie. Assuming

DIY DryBox is OpenSource OpenHardware filament drying solution aka 'dry box' for your 3D printing filament

Humidity: ±3% accuracy (20-100% RH)

This is essentially a custom ESP32-C3 board with BME280 and LTR-390UV sensors on board

part substitutions

RF sensors (UART) and PIR sensor

This DIY version allows you to build your own custom filament dryer or to upgrade your existing one

Then the ESPHome will convert configuration files into code that does exactly what was prescribed in the configuration file and upload it to the device

Low-power consumption

Any modification is done at your own risk

12V and 5V power supply 12V for 3channel LED strip

There is also a detailed step-by-step guide available in the GitHub repository in case you need it

5V for addressable LED strip