3 Axis Digital Compass ( HMC5883L) GY-271 Thermoelectric Cooler (Peltier) – 40x40mm After turning on the device

After turning on the device

It's like the ATmega168

TCS34725 Datasheet

x2 lines 1602A character LCD modules

3 Axis Digital Compass ( HMC5883L) GY-271 Thermoelectric Cooler (Peltier) – 40x40mm After turning on the deviceThis 3 axis digital compass is based on Honeywell HMC5883L sensor. The magnetometer or digital compass sensor is used to measure the heading angle (angle from the north), This is done by measuring both the direction and the magnitude of Earths magnetic fields, from milli gauss to 8 gauss. Communication with the HMC5883L is simple and all done through an I2C interface. Voltage of 2. 16 3. 6VDC should be supplied. Features Simple I2C interface 2. 16 3.