Simply Auto bed with Capacitive proximity AND ONLY a 12V relay
thingiverse
Looking online, I've only found auto bed solutions that employ resistors to lower the output voltage of sensors or optocouplers. However, I thought, "Can I use a proximity sensor's output to pilot a 12V relay?" The answer is yes, it can be done. A simple diagram in the file shows how. The sensor's 12V input is identical to the Ramps', and the signal from the sensor activates a 12V relay. The Com pin of the relay connects to the S pin of the Z min, while the NO pin of the relay links to the "-" pin of the z-min. I know there's plenty of space between the sensor and hotend in my printer, but it works with just a relay and the sensor. Here's a video showing how: https://www.youtube.com/watch?v=NRFidCOjpvI And here's my blog post on the topic (sorry, only in Italian – you can use Google Translate): http://www.indiegearlab.com/autobed-levelling-ljc18a3-h-zby-semplice-e-rapido/2358
With this file you will be able to print Simply Auto bed with Capacitive proximity AND ONLY a 12V relay with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Simply Auto bed with Capacitive proximity AND ONLY a 12V relay.