easypiezi/docs/tutorials/wiring/easy-piezi/harness-pinout.md

# EasyPiezi Wiring Harness Pinout

## Main Connector Controller Side

The Main Connector for the EasyPiezi has 6 pins, with Pin1 marked with a small embossed arrow:

![Main Connecctor Wiring Harness Input](../../../assets/images/wiring-diagrams/Main-Connector-Wiring-Harness.png)

Pin numbers are laid out in the following image and table:

![Input Connector Pin Assignments](../../../assets/images/wiring-diagrams/Main-Connector-Wiring-PinNumbers.png)

| Pin Number | Wire Color | Signal Name | Req/Opt |
|------------|------------|-------------|---------|
| 1          | <strong><span style="color:green">Green</span></strong>      | SDA (I2C)   | Optional|
| 2          | <strong><span style="color:yellow; background-color:#212121; ">Yellow</span></strong>     | SCL (I2C)   | Optional|
| 3          | <strong><span style="color:red">Red</span></strong>        | +6-12V DC   | Required|
| 4          | <strong><span style="color:black; background-color:#F5F5F5;">Black</span></strong>      | Ground      | Required|
| 5          | <strong><span style="color:white; background-color:#212121">White</strong>      | Z-Trigger   | Required|
| 6          | <strong><span style="color:#08F">Blue</strong>       | PT100 Anlg  | Optional|

## Main Connector Sensor Side

The EasyPiezi's Main Connector Pinout is printed on the bottom of the board:

![EasyPiezi Board Main Connector Pinout](../../../assets/images/board-images/easy-piezi/Main-Connector-Pinout.png)

They are arranged from top to bottom:

| Pin Number | Wire Color | Signal Name | Req/Opt |
|------------|------------|-------------|---------|
| 1          | <strong><span style="color:green">Green</span></strong>      | SDA (I2C)   | Optional|
| 2          | <strong><span style="color:yellow; background-color:#212121; ">Yellow</span></strong>     | SCL (I2C)   | Optional|
| 3          | <strong><span style="color:black; background-color:#aaa;">Black</span></strong>      | Ground      | Required|
| 4          | <strong><span style="color:red">Red</span></strong>        | +6-12V DC   | Required|
| 5          | <strong><span style="color:white; background-color:#212121">White</strong>      | Z-Trigger   | Required|
| 6          | <strong><span style="color:#08F">Blue</strong>       | PT100 Anlg  | Optional|