first I would like to introduce myself, as I'm new here. I play with arduino's for a few months now, and my main usage for it is automating the house, with a Raspberry Pi as the brains of it all, running Domoticz open-source home automation software, and Arduino's for wireless sensors, 433mhz controlled light switches... Lots of fun
Now for my question, I've started building a Sentry Gun for my brother's airsoft company, I need to keep things small so hope to fit everything on a small breadboard (I use a Nano for this). Now, I need to connect 3 servo's for gun tilt/pan/trigger, and would like a way to monitor the signals they receive from te Arduino... Is it OK to connect a LED to the signal wires? Servo's are powered from external source (7 V DC), and share ground with the Arduino. Arduino is powered from USB as it needs to be controlled over serial by a computer running the Processing IDE. I would risk trying it if it was a project for myself, but it's not for me and I would not like the sentry breaking down and disappoint my brother...
Thanks in advance for your advice!