3D printer controller box with current sensor

thingiverse

This housing houses a powered Arduino Pro Mini to control a 3D printer power supply as well as the filament cooling fan while monitoring the current draw of the printer. I developed this in order to have the ability to power on and off the 3D printer, power on and off the filament cooling fan, and monitor the current draw of the printer. I'll program my home controller (openhab but I use node red) to monitor the printer current in order to power down both plugs (printer and cooler) once printing is complete and the current draw drops. Here's the post that has instructions for the build http://homeautomation.proboards.com/thread/523/joshs-thread-rfm-builts-cases Backstory: Starting with the Instructables post by Eric Tsai. I found inspiration in DIY home automation. Computourist cleaned up the programming and added the ability to transmit to end nodes. Then I found a great forum that has simplified the build and offers a great community http://homeautomation.proboards.com/post/2053/thread This is my attempt to contribute back to the http://homeautomation.proboards.com/ community. High-voltage power supplies present a serious risk of personal injury if not used in accordance with design and/or use specifications. If used in applications on products for which they are not intended or designed, they can cause serious harm.