Adafruit Bluefruit LE SPI Friend
Best wireless bridge for adding Bluetooth connectivity to microcontroller projects.
This module is the most straightforward way to add Bluetooth Low Energy to your projects without sacrificing your hardware UART port. While it requires a bit of command-line configuration, the flexibility to define custom GATT services and HID profiles makes it an essential tool for any serious maker.
$17.50
at
Micro Center
Who it's for
- Engineers needing seamless integration with diverse microcontroller platforms
- Developers seeking to avoid complex Bluetooth protocol implementation
- Makers relying on robust documentation and community support
Who should skip it
- Budget-conscious manufacturers scaling for mass production
- Developers building time-sensitive applications requiring minimal latency
- Engineers working with resource-constrained microcontrollers
Performance breakdown
SPI Integration Efficiency
Four-pin SPI interface preserves valuable UART ports for other critical peripherals.
Firmware Flexibility
Adafruit's custom firmware enables deep customization of GATT services and profiles.
Command Set Accessibility
Intuitive AT command set makes complex BLE configuration surprisingly approachable for beginners.
Microcontroller Compatibility
5V-safe inputs ensure seamless integration with a wide range of microcontrollers.
Data Throughput Reliability
Standard Nordic UART profile provides a stable, transparent pipe for data.
Form Factor Utility
Ultra-compact footprint fits easily into space-constrained DIY electronics projects.
Key Specs
Core
ARM Cortex M0 running at 16MHz
Memory
256KB flash memory and 32KB SRAM
Transport
SPI at up to 4MHz clock speed
Input Compatibility
5V-safe inputs
On-board regulation
3.3V voltage regulation
Dimensions
23mm x 26mm x 5mm
Weight
3g
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