## VIAM

| 3.3V DC POWER | 1 2 | 5V DC POWER |
| --- | --- | --- |
| I2C | SDA | GPIO 2 | 3 4 | 5V DC POWER |
| I2C | SCL | GPIO 3 | 5 6 | GND |
| GPIO 4 | 7 8 | GPIO 14 | TXD | UART |
| GND | 9 10 | GPIO 15 | RXD | UART |
| GPIO 17 | 11 12 | GPIO 18 | CLK | PCM |
| GPIO 27 | 13 14 | GND |
| GPIO 22 | 15 16 | GPIO 23 |
| 3.3V DC POWER | 17 18 | GPIO 24 |
| SPI | MOSI | GPIO 10 | 19 20 | GND |
| SPI | MISO | GPIO 9 | 21 22 | GPIO 25 |
| SPI | SCLK | GPIO 11 | 23 24 | GPIO 8 | CE0 | SPI |
| GND | 25 26 | GPIO 7 | CE1 | SPI |
| ID SD | 27 28 | ID SC |
| GPIO 5 | 29 30 | GND |
| GPIO 6 | 31 32 | GPIO 12 |
| GPIO 13 | 33 34 | GND |
| PCM | FS | GPIO 19 | 35 36 | GPIO 16 |
| GPIO 26 | 37 38 | GPIO 20 | DIN | PCM |
| GND | 39 40 | GPIO 21 | DOUT | PCM |

## How to use

Print this page out at 100% scaling [do not select "fit to page"] Cut out one of the sheets below, and stick directly on to your Raspberry Pi pins to make wiring your next robot as easy as pie.

## Raspberry Pi 4 Leaf

3.3V 1 2 5V
GPI02 SDA 3 4 5V
GPI03 SCL 5 6 GND
GPI04 7 8 GPI014 TX
GND 9 10 GPI015 RX
GPI017 11 12 GPI018
GPI027 13 14 GND
GPI022 15 16 GPI023
3.3V 17 18 GPI024
GPI010 MOSI 19 20 GND
GPI09 MISO 21 22 GPI025
GPI011 SCLK 23 24 GPI08 CEO
GND 25 26 GPI07 CE1
GPIO0 SDA 27 28 GPI01 SCL
GPI05 29 30 GND
GPI06 31 32 GPI012
GPI013 33 34 GND
GPI019 35 36 GPI016
GPI026 37 38 GPI020
GND 39 40 GPI021

## Rover Pi 4 Leaf

## GPIO (General Purpose IO)
- SPI (Serial Peripheral Interface)
- I2C (Inter-integrated Circuit)
- UART (Universal Asynchronous Receiver/Transmitter)
- PCM (Pulse Code Modulation)
- Ground
- 5V (Power)
- 3.3V (Power)

1 → DC Motor Driver 3.3V
3 → Acceleration Tilt Module SDA
4 → Buck Converter 5V
5 → Acceleration Tilt Module SCL
6 → DC Motor Driver GND
11 → DC Motor Driver In 1
13 → DC Motor Driver In 2
15 → DC Motor Driver En A
16 → DC Motor Driver In 3
17 → Acceleration Tilt Module 3.3V
18 → DC Motor Driver In 4
22 → DC Motor Driver En B
34 → Acceleration Tilt Module GND
35 → DC Motor Driver Encoder Left
37 → DC Motor Driver Encoder Right
39 → Buck Converter GND

## Rover P

## i 4 Leaf

Inspired by the original Raspberry Pi Leaf by Simon Monk