Chaiyu curriculum

In this circuit, ESP-01 reads time information on Alibaba Cloud and controls the 0.96-inch OLED display to display the time. The automatic screen resting after dark is realized by the STC15w408AS-16P microcontroller through the s8050 NPN transistor. The microcontroller determines the light by reading the potential between the patch potentiometer compared by the Lm393 chip and the GL4528 10K-20K photoresistor and 10K 0805 patch resistor. Whether it is lower than the predetermined brightness, it determines whether to power on ESP-01 and OLED display. In addition, by simply touching the switch on the side of the top of the PCB, the microcontroller can power on the IoT module and display in the dark, achieving the purpose of being able to tell the time at night. For power supply, a 3.7V 600MAH polymer lithium battery is used, and a TC4056A 1A lithium battery management chip system is provided to charge the battery.