Applied to the design of photoelectric conversion circuit for household curtains

This microcontroller has ultra-low power consumption, has 5 power-saving modes, can wake up from standby mode within 1us, and has a powerful 16-bit RISC CPU, 16-bit registers and constant generator to help maximize code efficiency . This microcontroller also features a wide range of clock sources including LF, OSC and VLO. It is programmable through the serial port system, does not require external programming voltage, has programmable confidentiality fuse code protection, and it has a Spy-Bi-Wire simulation logic interface. In addition, it has 10-bit IO port, 8 comparator channels and 16-bit Timer_A timer with 2-way capture and comparison registers. The IO port and Timer_A timer of this microcontroller have powerful interrupt capabilities.

Photoelectric conversion circuit

The photoelectric conversion circuit is mainly composed of the 27L2 chip, which converts the optical signal into a voltage signal and connects it to the P1.1 port of the microcontroller through the follower. The motor control circuit is mainly composed of the L298n ($2.7672) chip, which is connected to P1.2 and P1. 3 mouthfuls. Buttons S1 and S2 are connected to the P1.6 and P1.4 ports of the microcontroller. The 3.3V and 5V power supply circuits are mainly used to enable power supply and logic level selection for the chips used. Table 2-2 lists the components and chip models used in this work.