> ## 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 25.4 mm (Circuit 1)

  25.4 mm x 25.4 mm (Circuit 2)

* Weight: 3 g (Central) (pins soldered)

  2 g (Surface)

* **I2C Address:**

  * 0x2E default address
  * 0x49 address when ADR1 is short-circuited
  * 0x33 address when ADR2 is short-circuited
  * 0x34 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   |
| RESET      | Microcontroller Reset (Debug) |                       |
| D0         | Digital Output                | Digital Input Pin     |
| A0         | Raw Analog Data Output        | Analog Input Pin      |

## Header (Right)

| Module Pin | Description                                         | Development Board Pin |
| ---------- | --------------------------------------------------- | --------------------- |
| GND        | Ground                                              | Ground                |
| SDA        | Bidirectional Data Line                             | SDA                   |
| SCL        | Data Line Clock Synchronization Signal              | SCL                   |
| SWIM       | Microcontroller SWIM Communication Protocol (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                |