> ## 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.

# External Connections (DY1Av2)

## USB Type-C

| Pin No | Pin Name | Pin Function                      |
| :----: | :------: | --------------------------------- |
|    1   |   VBUS   | Main power supply line            |
|    2   |    DP    | Differential data line (positive) |
|    3   |    DN    | Differential data line (negative) |
|    4   |    CC1   | –                                 |
|    5   |    CC2   | –                                 |
|    6   |    GND   | Main ground line                  |
|    7   |   SHLD   | Main ground line                  |

## Li-Po Battery Connector (JST-PH 2.0 mm, 2-pin)

| Pin No | Pin Name |   | Pin Function                        |
| ------ | -------- | - | ----------------------------------- |
| 1      | VBAT     |   | Li-Po battery positive (+) terminal |
| 2      | GND      |   | Li-Po battery negative (–) terminal |

## I2C Communication Connector (JST-SH 1.0 mm, 4-pin)

| Pin No | Pin Name |   | Pin Function             |
| ------ | -------- | - | ------------------------ |
| 1      | GND      |   | Main ground line         |
| 2      | 3V3      |   | Regulator output (3.3 V) |
| 3      | SDA      |   | Bidirectional data line  |
| 4      | SCL      |   | Data line clock signal   |

## Camera Connection Connector (FPC 0.5 mm, 24-pin)

| Pin No | Pin Name |   | Pin Function               |
| ------ | -------- | - | -------------------------- |
| 1      | GND      |   | Main ground line           |
| 2      | GND      |   | Main ground line           |
| 3      | CAMSD    |   | Bidirectional data line    |
| 4      | GND      |   | Main ground line           |
| 5      | CAMSC    |   | Data line clock signal     |
| 6      | GND      |   | Main ground line           |
| 7      | CAMV     |   | Frame valid indicator      |
| 8      | GND      |   | Main ground line           |
| 9      | CAMH     |   | Pixel valid indicator      |
| 10     | GND      |   | Main ground line           |
| 11     | 3V3      |   | Regulator output (3.3 V)   |
| 12     | CAMD9    |   | Image data line (pixel)    |
| 13     | CAMXC    |   | Camera clock signal input  |
| 14     | CAMD8    |   | Image data line (pixel)    |
| 15     | GND      |   | Main ground line           |
| 16     | CAMD7    |   | Image data line (pixel)    |
| 17     | CAMPC    |   | Camera clock signal output |
| 18     | CAMD6    |   | Image data line (pixel)    |
| 19     | CAMD2    |   | Image data line (pixel)    |
| 20     | CAMD5    |   | Image data line (pixel)    |
| 21     | CAMD3    |   | Image data line (pixel)    |
| 22     | CAMD4    |   | Image data line (pixel)    |
| 23     | GND      |   | Main ground line           |
| 24     | GND      |   | Main ground line           |

## Micro SD Card Connector

| Pin No | Pin Name | Pin Function                           |
| :----: | :------: | -------------------------------------- |
|    1   |   DATA2  | –                                      |
|    2   |   DATA3  | Chip select                            |
|    3   |    CMD   | Data line output                       |
|    4   |    VDD   | Power input                            |
|    5   |    CLK   | Data line clock synchronization signal |
|    6   |    VSS   | Main ground line                       |
|    7   |   DATA0  | Data line input                        |
|    8   |   DATA1  | –                                      |
|    9   |    SW    | –                                      |