I am trying to control a k6714 8 channel relay card from an arduino microcontroller. i have tried connecting the vb and ground to the microcontroller vb and ground, then connecting inputs 1-8 to microcontroller output pins and writing high and low (vb and 0) to these pins, but it does not seem to change the closed to open and vice versa on the relays. is there something else i have to do? the ic bypass jumpers are soldered in place.
K6714 requires open collectors.
If you want to control it via a 5V µcontroller, you need to install the transistor arrays instead of the wire jumpers.
thanks i’ll get that component and add it in