STC15L204 + NRF905 Wireless Interface Wireless Driver Board
Technical info: https://pan.baidu.com/s/130diXmIMlehK2uIVedtAkA
1.Onboard STC15L204EA microcontroller chips, the single chip processor as the 5 v power supply
2.Onboard for NRF905 wireless module 2 * 7 parent interface
3.Onboard UART interface, used to implement the serial communication
4.Onboard 5 V to 3.3 V AMS1117-3.3 chip
5.All lead to spare I/O, and mark the I/O name
6.PCB size: 32.1x21.8mm