This AT-09 Bluetooth Module is a CC2541-based module with a dedicated breakout board that breaks out the pins and makes the module extremely easy to work with. It is an ultra-low power and highly versatile unit that offers effective wireless Bluetooth Communications with Bluetooth 4.0 and BLE communication capabilities, making it a firm favourite amongst Makers throughout the world. Although the module itself is not extremely advanced, the versatile nature of the module and clever design of the breakout board enables it to be used for a wide range of projects and applications. As such, it can be used for home automation systems, wireless light switches or plug points, wireless signal transfers between devices, as well as many more ideas that are yet to be invented!
The AT-09 module operates on a low 3.3V input at the wireless frequency of 2.4GHz. It has a maximum efficient distance of around 60 metres, and also features a number of security and privacy features to keep your projects safe from unauthorised access. And if that isn’t enough of a feature set for you, this module can also be used as a slave or master, meaning that it can either be utilised as a main controller for other devices, or can be used to accept commands and react according to a larger control system.
The AT-09 is a module that contains a BLE chip (a CC2540/CC2541). This module allows performing serial communication with the BLE chip thanks to an Rx and a Tx pin. This module is also very similar to the HM-10 module and is also compatible with it. So if you have some experience with the latter, you will get started quickly with the AT-09.
Note: The Module can act as both Master and Slave.
Features:
- BT Version: Bluetooth Specification V4.0 BLE
- Working frequency: 2.4GHz ISM band
- Modulation method: GFSK(Gaussian Frequency Shift Keying)
- RF Power: -23dbm, -6dbm, 0dbm, 6dbm
- Security: Authentication and encryption
- Long range: Open space can have upto 60 Meters
- Power input : 3.6v to 6v DC
- Built-in PCB antenna
- Default Config: 9600, 8, N, 1
Applications:
- Industrial remote control, remote sensing.
- POS system, Bluetooth keyboard, mouse, game controllers.
- Automobile testing equipment.
- Portable, the battery power of medical equipment.
- Automated data collection.
- Bluetooth remote control toy.
- Bluetooth printer.
BLE Chip | CC2540/CC2541 |
BT Version | V4.0 BLE |
Input Voltage | 3.6~6V |
Range | Upto 60m |
Working Frequency | 2.4GHz ISM band |
Modulation | GFSK |
Security | Authentication and encryption |
RF Power | -23dbm, -6dbm, 0dbm, 6dbm |
Default Config | 9600, 8, N, 1 |
Default Mode | Slave mode, Pairing pin: 000000 |
Product Dimensions | 43 x 17 |
Operating range | -5°C to +65°C |
Product Weight | 10 grams |
Country of origin : China
Note: Pins are already soldered to the Module.
1 x AT-09 Bluetooth 4.0 Module
Pin
|
Function
|
Vcc | 3.6 - 6V |
Gnd | Ground |
TXD | Connects to the UART RX of MCU |
RXD | Connects to the UART TX of MCU |
STATE | state test pins, connected to internal LED, generally keep it unconnected. |
EN | This pin is used to toggle between Data Mode (set low) and AT command mode (set high). By default it is in Data mode |