Pin interposer

OpenPin

OpenPin is an open-source project which lets you use your Ai Pin after Humane bricked them. You can install it in a few clicks & without any ADB certs!

Installing OpenPin

Please see OpenPin.org for installation and usage instructions.

Building a Interposer

Bill of Materials

If you order the PCB with the USB-port already soldered (as in the instructions below) you do NOT need to buy the 'Micro-USB Port' part.

Tools Required

You will also need soldering tools and a 3D printer, depending on how much you choose to do yourself (versus using a service).

1. Order the PCBs

The following instructions are for if you want to buy the PCBs with the surface mount USB port already soldered.

These instructions are for JLCPCB. I don't have any affiliation, I just like them.

Upload gerbers

• Download the pin-interposer.zip (the zipped Gerber files)
• Take pin-interposer.zip, go to JLCPCB.com, and simply upload into the file dropbox

Set PCB details

• The only setting you need to change is toggling on 'PCB Assembly'
• Click next, confirm you see the PCB in the preview, then click next again

Upload assembly files

• Download bom.csv and positions.csv
• Upload bom.csv into the left dropbox & positions.csv into the right, then click next

Set parts to assemble

• Click the search icon across from J1, enter 10118193-0001LF, and search & select it
• Leave the other rows alone
• Click next, it will ask if you are sure you don't want to assemble the other rows, click confirm

Click through rest of process and check out!

2. 3D-print plastic parts

• Download the two 3D models: Pin-Base.stl and Pin-Cradle.stl
• Print with 0.2mm quality or better in PLA

3. Solder the pogo-pins

• Push the pins of the part into the 4 matching holes on the board
  Make sure the part is on the same face of the board as the USB port!
• Solder one pin to start with, make sure its flush with the board and perfectly vertical
  If not soldered correctly, reheat the solder joint and adjust.
• Solder the remaining pins

4. Final assembly

Putting the parts together

• Put the Pin Base down on a table
• Press the PCB into the matching recess (it should be fairly obvious how it fits)
• Place the Pin Cradle overtop of this assembly, aligning it so the pogo pins protrude through the hole

Screwing everything in

• Feed the four M2 screw through the holes in top, hand-tighten on nuts
• Use the 1.5mm Hex Driver and 4mm Nut Driver to tighten everything up

Install magnets

⚠️ It's really important you get the orientation of the magnets correct!

• Place four magnets on the underside of AI Pin like so:

• Mark the exposed face of each magnet with a sharpie
• Being careful not to get mixed up, transfer each magnet to the corresponding hole on the Pin Cradle, sharpie-side down
  Again, make sure its in the correct hole & in correct orientation!!
• Depending on your printer tolerances, the magnet may be too hard to push into the hole
  • Use the T27 TORX Hex Driver to file the hole until it fits
  • The driver works great for actually pushing the magnet into the hole, too

5. Enjoy & move on to installing client!