Single key LED light bar control MCU

This MCU is a key switch dimming, key control and debugging LED light size LED dimming control board scheme, stepless dimming function. This MCU is mostly used for LED vanity mirror, led eye protection table lamp and other LED lamps.

Function description of MCU controlled by single key LED light bar:

1. The input voltage is DC5V to charge the 3.7V lithium battery. The charging current can be preset to 300mA ~ 1500mA. It doesn‘t work when the power is turned on. The standby current is less than 10 μ a.

2. Two LEDs, one is cold white and the other is warm white. Short press to cycle to change the LED working mode. Initially, turn on the cold white light with an initial brightness of 100%. Short press warm white, light it at the same time (cold white plus warm white), and short press to turn off standby. Long press the first brightness reduction, long press the second brightness increase, and cycle. Long press the stepless dimming time for 3 ~ 4 seconds.

3. This MCU software can be preset as: A. no brightness memory, no delayed shutdown, B. brightness memory, no delayed shutdown, C. no brightness memory, delayed shutdown, one of three.