Somatosensory night light

A pyroelectric sensor and a photoresistor were installed. Originally, I wanted to make a night light with a sense of individuality. The original idea was to use the power switch button and the EEPROM of the microcontroller to make one that changes one color every time it is powered on. But after realizing During the process, as soon as the program called to read the EEPROM, it was reset (it may be a bug in the chip, or it may be an operation problem. I will try it again later when I have time). Later, I had no choice but to block the photoresistor. The effect of switching colors is not very satisfactory. I will continue to optimize it when I have time later.

The bottom is fixed with screws, and you can see the battery when you disassemble it (the design is a rechargeable battery, a dual-purpose battery version. You can install a 3-string battery box directly without welding the lithium battery protection circuit, charging circuit, and boost circuit. Powered by AA batteries)

The charging port on the back can also provide direct power supply.