ESP32 controlled LED board

Using Arduino Project Guidance
1

I'm trying to make a project with an existing LED board/lamp, which I want to control with an ESP32 / ESP8266. Turn on/off and dim up/down.

I imagine it should be possible to remove the existing potientio meter from the LED driver board - and then connect an ESP32 board in some way instead, that can control the dimming.

The existing LED driver board:

17052577357966749567862377588688
170525773579667495678623775886881920×2560 249 KB

The LED lamp :

17052576638066336436761265793216
170525766380663364367612657932161920×1440 364 KB

The LED lamp use a 9V / 2,5Amp power supply.

I'm not sure how to do this or what is needed to make the improvement? Hope any of you can help me, thanks.

2

What is the voltage across the outer pot pins? Is it DC or AC? Be careful, or ask an experenced friend, if mains present on the board.

3

There is 3,0 V DC over the pot meter pins.

4

Good. Creating a variable DC signal calls for some extra circuitry. Either a filter attached to a PWM output, giving some ripple, or DAC circuit.

5

RT8482 is an LED driver. According to the datasheet, you may be able to replace the potentiometer with a digital potentiometer, or try changing the wiring and using the circuit with PWM control.

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image1578×1540 307 KB

6

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