Hi
The K8090 - usb 8 channal relay Module have 10 pins marked as SK11 on the board.
I could not fined any discussion or any documentation for these pins.
Can someone please give me more information for what these pins are used for?
Can it be used for to controll the card from an external controller?
Thank you
Looking at the schematic.
It looks like you can use these for external buttons.
Take a look at the schematics on page 10 of vellemanusa.com/downloads/0/ … _k8090.pdf
If I’m reading that right, the pins 1-8, when shorted to ground (pins 9 & 10), will act like the switches SW1 to SW8. You should be able to control them with other circuits like a photo transistor based open collector for example.
The use of this connector is shown in the partlist on page 7.
Thank you for the help.
The pdf helped a lot… I should have thought about to download the kit’s pdf… Because it does not come with the module.