Might be a bad wire related thing, might be something else. Once somebody obtained a similar behavior by sending PWM signal on VCC and connecting VCC on VCNT. Tiny wires, might happen, look here at the jonhjore user comments: http://www.esp8266-projects.com/2016/04 ... witch.htmlmkotek wrote:Than you. Will check tonight and also with another board.
What I meant about the video, it shows that dimming works, only not as much as I expected. But maybe because of something unexpected, that is why I asked for advice.
I can also try this separate I2C driver, if that is better than standalone ESP.
As a quick step-by-step checklist I will take a look at:
- wiring / VCC value, GND, etc
- GPIO pin/ pin change / PWM output measurement
- VCNT voltage control input measurement
- software side
For a deadly simple test, without anything else connected to the MPDMv4 Dimmer board, you can use a 10K potentiometer connected between the VCC and GND with the wiper on the VCNT input pin. Slowly adjust and measure the POT voltage output and I'm sure you will find the dimming interval to be around 0V -> 2.9V. As soon as you are out of the dimming interval you will find it very quck, it will loose sync and start flickering.
Because this is a thing that really matter for me, all the boards are extensively tested before departure. No DOA at all until now.
For any related question you can also directly contact me anytime.
Happy breadboarding,
TJ.