Controlling high voltage rgb strip light

[Harsh01]

I recently bought this rgb led strip with it's controller for my desk setup.It was cheap and effective until I started using it , the controller came with ir remote but no memory function , once the power to controller is cutoff it losses it's last set mode.

As it was bought locally it was hard to find replacement controllers , but I was able to find some but they are quit expensive for such a small strip.

Took a look inside of controller found out that it outputs anywhere from 100-220v dc and searched bout the components , the left most chip is full bridge rectifier, in center the three wires are from ir receiver and we have some sort of rom chip in middle which runs on 5v and on right the three transistors are mcr100-8 thyristor.

So my final question is can I by pass the ir controll (rom chip) and directly controll the thyristors with arduino/microcontroller with some optocoupler or something.

I know messing with high volate is dangerous but I just want to see if I can make it or not

 

[Harald Kapp]

we have some sort of rom chip in middle

That wouldn't be a ROM but a microcontroller.

on right the three transistors are mcr100-8 thyristor.

Not thyristors, transistors. Most likely MOSFETs. As the LEDs are operated by DC, if a thyristor were used, one could turn the LEDs on but not off again.

can I by pass the ir controll (rom chip) and directly controll the thyristors with arduino/microcontroller

Look e.g. here.

I know messing with high volate is dangerous but I just want to see if I can make it or not

I strongly discourage you from messing with this circuit as it is directly connected to mains. The minimum you can do is isolating the Arduino from the LED board using optocouplers as shown e.g. here ore here.

 

[davenn]

Took a look inside of controller found out that it outputs

and I note the assembler must be colourblind as the red and green output wires are reversed