I bought a PWM Dimmer based on a 555 from AliExpress to regulate the brightness of a 12V 1A 1 meter LED strip, I already built one myself years ago on a perfboard but this one was the exact dimensions I needed for a project. I built mine from components from AliExpress and components found in old electronics so I thought nothing functionally would change The dimmer is this one https://www.diymore.cc/products/pwm-10a-speed-regulation-led-dimming-ultra-high-linearity-band-switch but I attached a real photo of the one I got from AliExpress My problem is that it isn't doing any regulation while connected to LED strips, I tried with the 1m one and with another light that has three 30cm LED strips in parallel Every other light or motor I connected to it seemed to make it work. I really have no idea what could be causing this, maybe it's sensible to capacitance? LED strips are two long straight parallel contacts but I don't think it's enough to cause anything as displayed here in the video: h