Hi all, my first post on the forums.
I have a 6x6 array of switches connected in a matrix, and I need to confirm that each one connects the correct row to the correct column (e.g. SW0=R0+C0, SW1=R1+C0, etc).
I also need to do it quickly, so for example press each button and see an LED light up confirming the connection.
The outputs I have on the connector are C0, C1... C5, and R1, R2, ... R5
This would be simple I thought - connect an LED/resistor + power supply to each set of connections and voila, but the problem is that if using the same power source, they all end up connected to the same ground and/or +V supply, which defeats the point of the test.
I'm sure there is an easy way to do this but I can't think of it
I've thought about using resistors between the columns and rows and then the user will know if the wiring is correct based on the resistance value of each switch, but I prefer to use LED's somehow if possible?
I have a 6x6 array of switches connected in a matrix, and I need to confirm that each one connects the correct row to the correct column (e.g. SW0=R0+C0, SW1=R1+C0, etc).
I also need to do it quickly, so for example press each button and see an LED light up confirming the connection.
The outputs I have on the connector are C0, C1... C5, and R1, R2, ... R5
This would be simple I thought - connect an LED/resistor + power supply to each set of connections and voila, but the problem is that if using the same power source, they all end up connected to the same ground and/or +V supply, which defeats the point of the test.
I'm sure there is an easy way to do this but I can't think of it
I've thought about using resistors between the columns and rows and then the user will know if the wiring is correct based on the resistance value of each switch, but I prefer to use LED's somehow if possible?