JDY-31 SPP-C Bluetooth Serial Pass-Through Module Wireless UART Communication for Arduino
● In Stock
| SKU | AT-0101 |
| Category | Wireless Devices |
| Availability | In Stock |
| Shipping | Countrywide delivery · Free on orders over KSh10,000.00 |
Description
Designed to provide transparent UART serial communication between microcontrollers and Bluetooth-enabled devices, the JDY-31 SPP-C Bluetooth Serial Pass-Through Module is a compact wireless communication module. Based on Bluetooth 3.0 SPP (Serial Port Profile), the module allows Arduino, ESP32, STM32, Raspberry Pi, and other microcontrollers to communicate wirelessly with Android phones, Windows PCs, and other Bluetooth devices. The JDY-31 works in transparent serial pass-through mode, meaning any data sent to the UART interface is transmitted wirelessly over Bluetooth without modification. This makes it ideal for wireless control, sensor data transmission, remote monitoring, robotics, smart
Key Features
- Bluetooth 3.0 SPP serial pass-through module
- Transparent UART wireless communication
- Some breakout boards support 5V VCC input
- Maximum wireless transmission distance: up to 30m
- Built-in PCB antenna
- Bluetooth pairing PIN configurable via AT commands
- Supports Android, Windows, and Linux Bluetooth communication
- Slave-only operation mode
- Suitable for Arduino, ESP32, robotics, wireless sensor monitoring, home automation, and serial debugging projects
- AT+VERSION – Check firmware version
- AT+NAMEYourName – Change Bluetooth device name
- AT+PIN1234 – Set pairing password
Specifications
| Communication interface | UART / TTL serial |
|---|---|
| Operating voltage | 1.8V–3.6V DC (3.3V recommended) |
| Logic level on RX/TX pins | 3.3V |
| Default baud rate | 9600 bps |
| Supported baud rates | 9600 to 128000 bps |
| Maximum serial throughput | up to 16KB/s |
| Default Bluetooth name | JDY-31-SPP |
| Default pairing password | 1234 |
| Low power consumption | approximately 4.7mA idle, 7.3mA connected |
| Compact PCB size | approximately 39 × 17 mm |
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