## ST7789 LCD

https://learn.adafruit.com/adafruit-1-3-and-1-54-240-x-240-wide-angle-tft-lcd-displays/pinouts

| Identifier | Description                | Arduino pin | ATMega328p pin |
|------------|----------------------------|-------------|----------------|
| MOSI       | SPI master out - slave in  | 11          | 15 - PB3       |
| SCLK       | SPI clock                  | 13          | 17 - PB5       |
| CS         | Chip select                | N/C         | N/C            |
| RST        | Reset                      | 9           | 13 - PB1       |
| DC         | SPI data / command select  | 8           | 12 - PB0       |
| BL         | Backlight PWM              | 7           | 11 - PD7       |


## Polulu G2 motor driver

https://www.pololu.com/product/2995

| Identifier | Description                | Arduino pin | ATMega328p pin |
|------------|----------------------------|-------------|----------------|
| PWM        | Motor PWM                  | 14 / A0     | 23 - PC0       |
| DIR        | Direction                  | 15 / A1     | 24 - PC1       |
| SLP        | Sleep (active low)         | 16          | 25 - PC2       |
| CS         | Current sensing            | 17 / A3     | 26 - PC3       |

CS has a voltage of 50mV + 20mV per A.


## VL53L0X time-of-flight sensor

https://learn.adafruit.com/adafruit-vl53l0x-micro-lidar-distance-sensor-breakout/pinouts

| Identifier | Description                | Arduino pin | ATMega328p pin |
|------------|----------------------------|-------------|----------------|
| SCL        | I²C clock                  | 18 / A4     | 28 - PC5       |
| SDA        | I²C data                   | 19 / A5     | 27 - PC4       |


## Buttons

| Description | Arduino pin | ATMega328p pin |
|-------------|-------------|----------------|
| Up          | 3           | 1 - PD3        |
| Menu        | 5           | 9 - PD5        |
| Down        | 6           | 10 - PD6       |