8 Channel Digital Ac Programmable Light Dimmer Module Controller Board Arduino Raspberry Compatible 50/60hz 110V, 220V IOT

This product claims to do 50Hz/60Hz autodetect of the AC line frequency, but that isn't actually a function of the board but the software you run on a micro-controller (Arduino or similar) that you need to add to have a complete dimming solution. All the board does is to provide a sync output that your micro-controller can (and should!) use to control the timing of firing the Triacs on the board.The board comes without any documentation but the connections are clearly marked and lack of documentation shouldn't really cause any problems for such a simple device (8 logic level inputs corresponding to 8 AC load outputs). At the manufacturers website there are links to documentation and software but they are on a restricted google drive and by the time of writing this review my request for access has not been answered. An internet search results in plenty of examples for this specific product and other products that are based on the same concept. I found it no problem to pick some of the ideas from those examples and to create my own software for this board (running on an Arduino Yun to allow for WiFi control of the dimming).This board implements 8 leading edge dimmers (which is the typical design of dimmers for incandescent bulbs). While LED lights sold as "dimmable" tend to work with leading edge dimmers, the result is not always satisfactory (limited dimming range, possible flicker). In general, trailing edge dimmers tend to give better results with LED lighting. However all of the boards I have seen for dimming from a micro-controller are of the leading edge dimmer design.Instead of using it for dimming, the board can also be used to simply turn on or off AC loads. This makes it unnecessary to monitor the sync signal for timing and greatly simplifies the software. However this board does not have the snubber circuits required to switch inductive (motor, transformer) loads reliably (it isn't intended for that purpose).The board does everything I expected it to do and I'm happy with my purchase. The thing I really don't like about it are the screw terminals for the AC input and load connections which are too small. Stranded 12awg wire does not fit at all. Solid 14awg fits well but it still seems as if the connectors are undersized and may not handle any mechanical stress from moving the wires after they have been clamped down (so far they held, its just that the terminals look weak).I needed to control 7 lights and therefore this 8 channel product was ideal for me.

This item does precisely what it is advertised to do and works fine for controlling an 8 bulb industrial LED light. For best performance with various microcontrollers (ESP32, Arduino, etc....), we suggest the "Dimmable Light" library.

Quality is good and works ok, however be aware this does not work with PWM, code need to be driven by interrupt linked to zero crossing pulse.

the heat-sinks help the SSRs last. I've used two of these in my outdoor Arduino Christmas lighting (16-channels total) and after 3-years only 2 channels have died. But i don't necessarily blame the SSR, I did not install in-line fuses on the channels to prevent over 2-amp surges. Next time I will buy mini 2A circuit breakers...

Board looks good initially excecpt there is zero documentation - no schematics, no data sheet, no usage information, no sample programs , nothing other than the 1 photo showing wiring to the Ardunio. This is iritating - Even though the device is fairly logical for a very experienced user I was expecting at lease some links to some info - especially as to using the SYNC line for dimming purposes. And, as it specified "Compatible with any ARDUINO, RASPBERRY boards." I would expect at least a wiring diagram with the Raspberry Pi - but nothing. Not a very professional finished product without doc.

I must say once I got this working, it is GREAT! I can turn on/off or dim and 120 volt device all from a 5 volt Arduino! The other cool feature is that because the Arduino is so fast, you can do all kinds of great lighting sequences (chasing lights, very fast blinking, and other effects).

the item works great and came in when it said it would