USB-C port mod for Lemontron
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A mod for the right hand side mid and top plates of the Lemontron to add a USB-C port
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- Printables
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- Other Printer Parts & Upgrades
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- Creative Commons — Attribution — Noncommercial — Share Alike
Adds a handy USB-C port for the Lemontron so you can add a camera or sensor for input shaping, or even external storage if you want.
All parts are printed in the given orientation, but you can of course rotate to fit. A 0.4mm nozzle with 0.2mm layer heights, another well tuned printer and some soldering ability is assumed.
Parts needed:
- Micro USB cable with power, data+, data- and ground or a micro USB plug board
- USB-C port board such as this. Keep in mind when buying a USB-C board that it MUST have pads for both CC1 and CC2 - many have the CC lines shorted and it won't work properly.
- 2x 56k resistors if your board doesn't already have them on the CC lines
Printing:
- Right midplate: Thermally resistant filament needed, as the original build guide mentions. You should probably use supports underneath where the wire and port cutouts are.
- Right top plate: PLA is fine for this.
Wiring:
- If you are lazy like me and don't want to have to remove the linear rail to put the wires through, then solder up only one port first and then thread the wires through before soldering the other port - it'll make it much easier to get it through!
- Cut the USB-A end off your micro USB cable, giving yourself enough length to run it over to your Pi zero on the other side of the printer. If you're using a micro USB plug board, short ID to GND.
- Solder the wire ends to the USB-C board
- Solder 56k resistor from CC1 to GND and CC2 to GND. Some boards do this differently, so you may have to figure out where exactly it goes but it shouldn't be too hard. Some boards already have it done for you! This is necessary so peripherals work correctly with it.
Assembly:
- When putting the wires through, you should use the wire channel closest to the two fans and not the one further back. This is because only the power lines go through here and not the motor lines, and motor lines are more likely to cause interference with the USB signal.
- Channel your new cable through and plug it into the Pi Zero, making sure you ONLY plug it into the micro USB port closest to the HDMI port, and not the one closest to the camera connector.
- Push USB-C end between the mid and top plates. You may need to file it down to get it perfectly to size and you may also want to glue it down to the midplate.