Small oscilloscope
 

I remember a few months back or so there was discussion over oscilloscopes and finding one cheap. I just happened to stumble upon this nice little gem.

4.1in X 2in X .3in
Full color screen, not that it really matters.

Seems great for only $90. They are highly back ordered ATM though or I would get one.

(Pre-order)DSO nano - the pocket size digital storage oscilloscope DSO nano - the cheap, low cost micro digital storage oscilloscope [TOL114C3M] - $89.00 : Seeed Studio Depot, Arsenal for interaction engineering

Interesting. I'd seen the one they offer that's a kit with a mono display, but not the iPod-ish version.

One word of advice to anybody contemplating the purchase of a scope. It is extremely handy sometimes to have one with at least two display channels. Single-channel scopes are ok if you just want to look at something like the output of an O2 sensor, or verify that a certain circuit is operating, but there are many other occasions where you want to look at the relationship between two signals, such as a crank and cam sensor, or a crank sensor and an ignition or fuel output.