Autoswitch OFF for Tevo's Black Widow

thingiverse

Autoswitch for Tevo's Black Widow Autoswitch is designed to shut down the printer immediately or after a preferred time when it finishes printing. No more headaches from leaving the printer powered on or forgetting to turn it off remotely, and no need to call home to have someone manually shut it down. * A PDF guide is included. To use Autoswitch, you will need: 1. One slide switch (like this one: https://www.ebay.com/itm/10-Heavy-Duty-4PDT-125V-250V-6A-Slide-ON-ON-Switch-S201-ling/321039564222?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649) 2. Download and print the parts you need. 3. Add a gcode line at the end of the print, before disabling the motors, with "G1 Y235 ; serve print." The number on the Y axis should be around 230-240, depending on your building area. The farther away from the X plate, the better to secure not powering down the printer while it is printing. 4. One and a half to two meters of dual cable (schematic in the PDF guide) 5. Two M4 screws with two hammerhead nuts for the bracket 6. Two small PC screws (usually from laptops will fit; if the pusher barrel is loose, you may need an extra screw of this type) 7. One M3 bolt with one M3 hex nut or one M4 screw with one M4 hex nut to secure all the wires in the cap into the bracket 8. One spring with 0.8-10mm wire diameter, 12mm outer diameter, and a length of about 20mm You can also add another switch of the same type as referred to in number 1 for using it to disable Autoswitch and use the manual switch or replace the main manual switch and avoid all these wires. After completing these steps, you need to read the PDF guide for assembly and wiring schematic/diagram from the how-to setup all the wires (images below). Note that this may be applied to other printers with modifications or not, or it might need to design the whole thing from scratch; I couldn't do that because I don't own any other printers. WARNING! Leaving a printer on is not secure, at least you should have secured a few things like a smoke detector and fire extinguisher. Leaving your printer with this switch working on is your own risk. This is the semi-final product that works pretty well but can be better (this will happen by getting experience with it and finding out weak points). Your feedback will help, so if you have any suggestions, I would love to hear them. Thank you! Designed in Inventor