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6ch multi-controlled relay board 3
I built a multi-controlled relay board for my electronics workbench.
It can be controlled by web interface, HTTP GET, websocket, MQTT, UART (4pin JST header on top) and USB/serial. It also send changes to all these connections.
On the web interface you can define 25 groups of on/off states of the relays. Each group can be recalled by any of the interface methods, and you can also set a group to one of the two buttons for quick manual recalls.
The board works on the 24V supply I have all over my workbench, that’s what the two 2pin JST headers are for (2nd one for daisychaining).
All relay contacts are on the bottom side, there are two male and two female headers for every COM, NC and NO.
I wrote a little piece of code for my Stream Deck, so I can see and switch states of every relay and also recall every group from it.
I ise this thing to control and especially automate workflows on my electronics workbench. It’s great for long run test series of things.
Cool! Is there some kind of Documentation for this project?
There is also the [software](https://www.analogmensch.de/leben_meinung/20230202/RelayBoard(software).zip) and the [circuit diagram](https://www.analogmensch.de/leben_meinung/20230202/RelayBoard(schematic).pdf). The [documentation](https://www.analogmensch.de/leben_meinung/20230202/leben_meinung_20230202.html) is only in german, but maybe you’re german is good or you can read the examples for the switching functions 🙂
And yeah, you totally can modify this to any other voltage the relays would work on. I just use 24V cause I have them on [several corners of my bench](https://imgur.com/a/eoM28OX) as controller and PLC supply (a bunch of JST-Headers marked with “24V”)
This looks great!