> ## Documentation Index
> Fetch the complete documentation index at: https://docs.deneyapkart.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Technical Specifications

* Operating Voltage: 3.3V

* Dimensions: 25.4 mm x 50.8 mm

* Weight: 5 g (pins soldered)

* **I2C Address:**

* 0x0E default address

* 0x4C address when ADR1 is short-circuited

* 0x71 address when ADR2 is short-circuited

* 0x72 address when ADR1 and ADR2 are short-circuited

* The product includes 1 I2C connection cable, 10 cm in length.

## Header (Left)

| Module Pin | Description                               | Development Board Pin |
| ---------- | ----------------------------------------- | --------------------- |
| 3.3V       | 3.3V Supply Voltage                       | 3.3V Voltage Output   |
| BUT0       | Button 0 Capacitive Sensing Interface Pin |                       |
| BUT2       | Button 2 Capacitive Sensing Interface Pin |                       |
| BUT4       | Button 4 Capacitive Sensing Interface Pin |                       |
| BUT6       | Button 6 Capacitive Sensing Interface Pin |                       |
| BUT7       | Button 7 Capacitive Sensing Interface Pin |                       |
| BUT8       | Button 8 Capacitive Sensing Interface Pin |                       |
| BUT9       | Button 9 Capacitive Sensing Interface Pin |                       |

## Header (Right)

| Module Pin | Description                                         | Development Board Pin |
| ---------- | --------------------------------------------------- | --------------------- |
| GND        | Ground                                              | Ground                |
| SDA        | Bidirectional Data Line                             | SDA                   |
| SCL        | Data Line Clock Synchronization Signal              | SCL                   |
| BUT1       | Button 1 Capacitive Sensing Interface Pin           |                       |
| BUT3       | Button 3 Capacitive Sensing Interface Pin           |                       |
| BUT5       | Button 5 Capacitive Sensing Interface Pin           |                       |
| SBWTCK     | Microcontroller SWIM Communication Protocol (Debug) | No Connection         |
| SBWTDIO    | Microcontroller Reset (Debug)                       | No Connection         |

## I2C Communication Connectors

| Module Pin | Description                            | Development Board Pin |
| ---------- | -------------------------------------- | --------------------- |
| SCL        | Data Line Clock Synchronization Signal | SCL                   |
| SDA        | Bidirectional Data Line                | SDA                   |
| 3V3        | 3.3V Supply Voltage                    | 3.3V Voltage Output   |
| GND        | Ground                                 | Ground                |