I am trying to power and test a KA05 without my Arduino. The terminals are covering the text on the pcb so I have questions:
Do I need to power the board? Where and with what voltage?
Can I run a test with just a 5V battery pack to get the LEDs to function and hear the relays switch?
You can test the relais and LED’s with a 5V powersupply but the board is designed to work with an Arduino. This is much easier to control the shield.
But you can use the schematic in this pdf: http://www.velleman.eu/downloads/0/illustrated/illustrated_assembly_manual_ka05.pdf
to see what pins need to be powered. and you can find the arduino pinout here: http://www.electroschematics.com/wp-content/uploads/2013/01/Arduino-Uno-R3-Pinouts.png
I am supplying the board with 5V and I am triggering the digital inputs by grounding them. With my completed board I can get the green LEDs to shine but the relays won’t switch and their red lights won’t go on. What do you think I am missing?
PS - I understand that this would be easier with my Arduino but for this project it isn’t available.
I can operate the relays now. Are the digital inputs in any way connected to the circuits that control the relays?
No, they are not connected.
