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|rev.1||6 years ago|
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|README.md||6 years ago|
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This form factor is designed to be mechanically compatible with the Raspberry Pi Zero (W). This makes it possible to use PHATs and cases for the Pi Zero.
Pins are mapped to the 20x2 header to maximize compatibility with PHATS. Functions like UART, SPI and I2C should all be available.
3V3 1 | 2 5V PB7 3 | 4 5V PB6 5 | 6 GND PA8 7 | 8 PB10 GND 9 | 10 PB11 PB1 11 | 12 PB8 PA10 13 | 14 GND PB9 15 | 16 PA0 3V3 17 | 18 PA1 PB5 19 | 20 GND PB4 21 | 22 PA2 PB3 23 | 24 PA3 GND 25 | 26 PA4 PB2 27 | 28 PA5 PC10 29 | 30 GND PC11 31 | 32 PA7 PB0 33 | 34 GND PB15 35 | 36 PA6 PB12 37 | 38 PB14 GND 39 | 40 PB13
GND, Debug TX (PA9), PA13, PA14 (SWD)
This board has a position for NRF24L01+.
The radio module uses one of the SPI ports as alternate functions on some otherwise unused PC pins. PB12 and PB14 can only be used as regular GPIO when the radio link is enabled, not SPI. PB13 must be left unconnected, as there is no available remap for the clock line.
The radio module is used for remote control with the GEX Dongle and provides a fast, half duplex connection.
- One of the I2C pull-ups is at the wrong pin in the header (off by one, easy fix by cutting a trace and shorting with solder)
- Pins PB15 and PB14 should be swapped in the connector for SPI pHATs compatibility (when the bototm SPI port is used)