A logic probe is a useful tool for troubleshooting digital circuits like the ones found in Arduino projects. You could buy one, like on the left, or make your own. Here is one of our DIY favorites:
http://pminmo.com/troubleshoot/lprobe.htm
A logic probe is a useful tool for troubleshooting digital circuits like the ones found in Arduino projects. You could buy one, like on the left, or make your own. Here is one of our DIY favorites:
http://pminmo.com/troubleshoot/lprobe.htm