Monitoring low voltage with NPN transistor
I have a device with output pins. One of the pins go high (1 volt) when is running an specific routine. I need to monitor that pin with the BS1 (or BS2). I was told I can use a NPN with a small resistor. I need to know what components to use NPN and resistor values, hook up diagram and Bs1 (or BS2) code. Any help would be really appreciated!!
Thanks to JonnyMac for the suggestion.