This DIP breakout board from SparkFun for the Roving Networks RN-41 Bluetooth module lets you add a Bluetooth interface to a device that has a 3.3 V serial port. Two 0.1″ headers spaced 0.8″ apart makes it easy to use with standard solderless breadboards and 0.1″ perfboards. All pertinent pins are broken out and labeled. The RN-41 Bluetooth module on this carrier has firmware version 6.15.
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The RN-41 Bluetooth module is designed to replace serial cables; the Bluetooth stack is completely encapsulated. Using the TX and RX pins, the end user just deals with serial bytes: press the “A” character from a terminal program on your computer and an “A” will be pushed out the TX pin of the Bluetooth module. For computers that do not already have Bluetooth radios, you can use a USB-to-serial adapter to connect the Bluetooth module to a computer.
Warning: The RN-41 is a 3.3 V device. Attaching it directly to a computer’s RS-232-voltage-level serial port will break it. External components (such as voltage dividers) are required when interfacing with 5 V systems.
- Fully-qualified Bluetooth module
- FCC certified
- Fully-configurable UART
- UART data rates up to 3 Mbps
- Over-air data rate of 721 kbps to 2.0 Mbps
- Low power sleep mode
- Compatible with Bluetooth products that support SPP
- Includes support for BCSP, DUN, LAN, GAP SDP, RFCOMM, and L2CAP protocols
- 3.3 V operation
- Status pin
- Bluetooth technology v2.0 compatible
- Class 1 power output
- Firmware version 6.15
Note: SparkFun calls this product the “Bluetooth Module Breakout – Roving Networks (RN-41)”, SKU: WRL-12579. This product replaces the module with firmware version 4.77, which has SparkFun SKU WRL-10144.