Hello,
I am trying to make a bulb glow using a 12V relay. the circuitry is attacehd to this post. the input to the base is connected to the usb-6009's port. the relay switches to turn on the bulb but doesnt turn it off when the digital output is 0V. and the error message pops up.Even the self test fails after the program stops because of the error. Can anyone please help me make this work. The same setup works when I give a TTL pulse from a signal generator with 5V and 0.5 Hz square wave.
