Addons standard

[V3lectronics]

Need to come up with a smart standard for designing add-ons.

The Pine64 magnetic (?) pogo connector system can be used as an inspiration.

Electronics requirements:
-power lane (5/3.3V) at least 1-2W
-GND
-I2C, UART (or other simple protocol) lanes
-SYS connection (system power, see power schematic) for external batteries
-protection on all of the exposed pins (overcurrent, overvoltage, polarity etc.)

Mechanical requirements:
-mechanism for securely and conveniently attaching the addons to the chassis, probably at the back. Needs to be discussed with chassis team probably.

Pogo pins connectors:

e.g. phone can be male, addon can be female.

After we have a suitable standard it needs to be tested and documented in the wiki. Then people can start developing addons.

[gingrspacecadet]

how fancy do we want to go with these? Cause I am all for custom kernel drivers!

[Cactys12]

We should probably opt for the 4- pin connector to have 1 power lane and 1 data lane, we could then potentially try to integrate it as an internal USB, which could make it easier to use with Linux