This version uses STM8S003 as the main control chip. The price is cheap, and the overall price is based on the low-end T12 controller.
A sleep function and buzzer prompt function are added to the simplest soldering iron controller function.
DC socket input 16-24V.
3pin interface to connect the soldering iron.
The indicator light is red and green, the red light flashes when heating, and the green light turns on when the temperature is reached.
Adjust the temperature through RK097 potentiometer.
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