Hope you are fine and doing well. I need your help. I am new to Arduino and I am trying to build continuity tester to measure resistance of 4 wires at the same time. I am using Arduino uno board.
Can you please guide me through circuit and code. I'll be very grateful.
A "continuity tester" created by the help of an Arduino board tyically will NOT measure the resistance between cable ends.
Typically you'd just test:
- if there is continuity where it should be (i.e. continuity between the beginning and the end of the same wire within the cable)
- if there is no short circuit where no short circuit should be (i.e. between different wires within the cable)
With an UNO (total pins=20) and programming "Testing Result shown on Serial", which will use Pin-0 and Pin-1 for Serial connection to the PC, you have left 18 pins for cable testing, which would be enough for a "9-wire cable tester".
So you could create a cable tester for cables which contain up to nine single wires for cabling using an UNO. And I think I already posted full code for such a thing in this forum a while ago.