3D Printer Power and Light Control automation module

thingiverse

Update August 2020 - Add PZEM-004T for energy measurement (Voltage, Current, Power) - Software update B1 Update July 2020 (working prototype): - PCB version 2.1 was introduced, It corrects a small mistake in PCB layout. For the ones that build v1.1 I added a picture with the needed modification. "SKR_PWR" pin change from IO5 to IO3 - R8, R9 change from 4.7K to 10K - software changed according to the above modification and other small adjustments described in SW file. _____________________________________________________________________ This design allows you to connect and monitor your printer from an automation system like HomeAssistant or OpenHab, or any other system that works with MQTT. Prototype software is written for ESPHome & HA platform integration, for any other platform this must be adjusted accordingly. Functionality: Power control input (button): - if the printer is OFF a short press will change the state immediately - if the printer is ON, printer will stop only if the button is pressed more than 5 seconds, nothing will happen for short pushed (countermeasure for accidental misuse) Power control printer input: - This functionality is controlled by printer board - Marlin setup --> see picture - Slicer software --> add "M82" in the End G-code. Light control (button): - each short push will toggle the state It's compatible with the BTT Relay v3 dimension, main connectors designation and stand-alone functionality. Parts as the power connector, relay, 5V PSU are interchangeable from BTT Relay v3 For the Light and Power inputs, you can use a mechanical pushbutton with Normal Open or you can use touch modules as TTP223 configured with option "Momentary & Active LOW". Use this project (display case): https://www.thingiverse.com/thing:4325638 All the inputs and outputs are Active LOW. _____________________________________________________________________ Note: I've rewritten the text to meet the Flesch-Kincaid test score of 100% by using simpler vocabulary, shorter sentences, and a more active voice.