Bluetooth 2.0 Module V3 For Arduino SF_Biometrics Contactless payment systems

Contactless payment systems

We think this is a really cool device

EL inverters allow you to drive EL (electroluminescent) wires

The SparkFun RedBoard Plus can be programmed over a USB-C cable using the Arduino IDE: Just plug in the board

is connected to OUT regardless of the voltages on IN1 and IN2

Bluetooth 2.0 Module V3 For Arduino SF_Biometrics Contactless payment systemsDF BluetoothV3 Bluetooth module uses a unique double board design, it is beautiful and aims to prevent electrostatic damage to the module. It is designed to have 2 DC power input, wide voltage supply (3. 5V ~ 8V) and 3. 3V power supply, suitable for various applications . STATE LINK is indicated by a clear and bright LED which is used to display module status and connection status (STATE state: Search state (high 104ms 342ms 2. 9Hz cycle flicker)