User:Bridadan/pinephone gamepad

2020-08-19T18:32:29Z

Bridadan: Worklog and ideas page for a gamepad attachment for the pinephone

[[File:Pinephone_gamepad.png]]

The main focus was simplicity in design (and manufacturing) while not sacrificing capability wherever possible. Here are the highlights:

* Ability to use headphone and USB Type-C jack while in use. Requires 90 degree adapter or cord
* Power and data delivered through the pogo pins
* Landscape layout for better weight distribution

I forgot to add it to the drawing, but there will also be a cut out for the speaker and microphone.

For the electronics, I plan to construct it with 3 PCBs:

* Main board - Contains [https://www.digikey.com/product-detail/en/stmicroelectronics/STM32G070KBT6/497-STM32G070KBT6-ND/10326752 STM32G070KBT6] (0.86 USD in quantities > 1000) and pogo pin connector
* Left gamepad board - All buttons and trigger connections for the left half. Connects to main board with an FFC.
* Right gamepad board - All buttons and trigger connections for the righthalf. Connects to main board with an FFC.

Software-wise, my initial plan is for the STM32G070KBT6 to be running firmware compatible with HID over I2C. There is already a kernel driver for this protocol. This firmware needs to be written, but from how I understand it, it doesn't appear to be too complex.

For the housing, I went back and forth on adding a slide out or quick-detach mechanism. In the end, I decided to keep it simple for now and stick with strictly a back cover replacement. If viable sliding/quick-detach mechanisms come out of the keyboard contest, I'd be interested in working with those project leaders to be compatible, allowing you to swap out a keyboard for gamepad and vice versa.

File:Pinephone gamepad.png

2020-08-19T18:31:44Z

Bridadan:

PINE64 - User contributions [en]

User:Bridadan/pinephone gamepad

File:Pinephone gamepad.png