Dear guys,
I am using a ULN2003A to drive 5 relays. The inputs come from a 74hc595. The free wheeling diode is connected to Vcc.
It used to work, I could trigger any relay I wish using my Arduino (Through the 74hc595). but now, only two channels are operational.
Attached you will find the PCB. Should I replace my ULN2003?
Regards,
I am using a ULN2003A to drive 5 relays. The inputs come from a 74hc595. The free wheeling diode is connected to Vcc.
It used to work, I could trigger any relay I wish using my Arduino (Through the 74hc595). but now, only two channels are operational.
Attached you will find the PCB. Should I replace my ULN2003?
Regards,
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