Fingerprint Reader Sensor Module 8x8 rgb matrix And the use of small

And the use of small

It's easy to adapt Nextion family HMI to existing projects

I2S management service high-fidelity audio interface of applications

Key switch module KY-004

so when using our library

Fingerprint Reader Sensor Module 8x8 rgb matrix And the use of smallModule via a serial communication interface, directly with 3. 3V or 5V power microcontroller communication: Module data transmission feet (2 Foot TD) connected to the data bit machine receiving end (RXD), data receiver module feet (3 feet RD) connected to the data sender bit machine (TXD). For the RS 232 level (for example: PC machine) for PC communication, increase the level conversion between the module and the host computer Circuitry (e. g.: MAX232