2 pieces nRF24L01 wireless module
Communication with the HMC5883L is simple and all done through an I2C interface
Heavy duty design gives this joystick a great feel
The c communicates over a 1-Wire® bus that requires only one data line (and ground) for communication with microcontroller
Not just the UART port and debug port be layout
Microphone 9.4 x 6.7mm DC Fan 2 pieces nRF24L01 wireless moduleElectret microphone is a sound electrical conversion device. It is used in telephones,wireless telephones, mobile phones, ear telephones, recorders, radio recorders, alarms, voice control toys, voice control switches and more Note: Check photo below to find the ground Specifications: Size: 9. 7 x 6. 7mm Directivity: omnidirectional Connection: solder type Sensitivity: 28 to 58dB Standard operating voltage: 3V Impedance: 2. 2K