5V, 3V compatible design, suitable for 5V and 3V chip work, commonly used STC series and AVR microcontrollers can be used to meet the needs of different users.
The development board has 8 SMD LED lights, 6 SMD buttons, 4 LED digital tubes.
The buzzer has sound prompts, and can be used for music, alarm, etc. experiments.
Serial port conversion chip MAX3232, which supports both 5V and 3.3V voltage, can realize serial communication, STC single‑chip programming and other functions.
The temperature sensor DS18B20 interface and infrared receiving interface can be used for infrared receiving experiments such as H1838, which can realize infrared remote control keyboard expansion.