Here is the pinout for the Modular Rail from pi-top1, pi-topCEED and pi-top[3]. This is the thing that powers all of our add-ons, so here is the pinout with the descriptions. Enjoy!
The connector is a 34 pin (17x2) 2.00mm SMT, right-angle Connector, which uses square pins. It’s the same across the pi-top1, pi-topCEED and pi-top [3].
| Power Pin | ||||
|---|---|---|---|---|
| Name | Function | Voltage (Volts) | Max Current (Amps) | Descriptions |
| V_IN | Power Out | 18 | 0.5 | Input to system voltage. Can be used to power 5V and 3V3 |
| 5V | Power In | 5 | 0.5 | Fed by V_IN. Feeds into 3V3. Also supplies Raspberry Pi 5V. Available when system is off but will turn off when battery is below 2% |
| 3V3_PRST | Power Out | 3.3 | 0.1 | Fed from V_IN |
| 3V3 | Power Out | 3.3 | 0.5 | Fed from 5V. Feeds into 1V2 |