Hall sensor mounts for P3Steel

thingiverse

This is my suggestion on a Hall sensor mount on the P3Steel. Include: 1) Hall sensor wire 2) Hall sensor mount 3) Magnet mount on the y-axis Print and enjoy. Instructions I've found a better way to mount hall sensors after seeing someone's approach, but unfortunately I lost my reference again. To keep electronics to a minimum, this is how to mount X and Y endstops on the P3steel. You will need: 2x 3 pin DuPont wire 4 DuPont 3 plugs with female pins 2 10k ohm (or around) resistors 2 hall switch sensors (A1104EUA-T - or similar) 3mm ø and 10mm long strong magnets (the stronger, the better) a bit of M3 screws and nuts Let's start. 1) Make the wire by crimping one end with a normal DuPont plug and on the other end a 3 pin DuPont female header plug with the 10k ohm pull up resistor (see image with the plug). In the resulting wire, crimp both ends. 2) Print the parts and insert the 3 pin DuPont female pin header into the X-endstop holder while the plastic is still hot. When cooled, remove it as normal. 3) Remove your hotbed to mount the Y-axis magnet holder. Use small M3 screws on the new design; otherwise, use more bulky ones, and zip-tie the holder onto the y-frame. Remount your hotbed. 4) Y-endstop: Attach isolation tape to prevent any electrical connection and mount in holes on the back plate (mounted closest to the electronics). Now simply insert the hall sensor facing forward (refer to the datasheet). You may need to zig-zag the pins on the end of the hall sensor so it fits snugly. 5) Y-Magnet: Test the magnet polarity by touching it to the hall sensor and switch to a signal version! Place the magnet in its holder. If you messed up, check that Vcc is correct. Check that Gnd and Sig are connected. If so, a low voltage (less than 4v) should appear when the magnet is placed with its north pole towards the hall sensor. When the magnet's south pole faces it, a high voltage should appear. 6) X-endstop: Mount on either side of the x-carriage's belt - between the motor or idler part (check my thing page for pictures). The magnet fits into this slot. You're done!