debugging

I decided to harvest a peizo buzzer off one of my many salvage boards to use while troubleshooting a new IR reflective breakout per Frits' description in Live Show #012. It works like a machine. I only fried one sensor (hasty connection straight to V+). Surface mount components are easy to replace though, thank The Maker. The video has everything but the sensor carnage.

Ahh, sound debugging \o/  I think I've entered my personal Golden Age of Robotics.  

YES!

I do not have an oscilloscope, and I "always" wanted one. "So I could debug & understand & see what was going on".

Yesterday I got so frustrated that my cheap RF still was not 100% rock solid - even though I had made all sorts of initializing strings.

i got so desperate that I decided to buy a used oscilloscope. While checking out what was on sale in my area, I got the idea that perhaps I could make one myself..

That got me to look into .. "perhaps someone out there made a SW oscilloscope - how hard could that be?