[quote author="ferdinandk"]I built my own version of this handy tool last weekend. I replaced the linear regulator with a small boost-converter. Now the circuit can be powered with two AA batteries. The PCB is sandwiched between the battery holder and LCD, so to provide a handy device without need for a case. I had a lot of fun designing and building the circuit, so thank you DP for highlighting this project.[/quote]
You should post the design for this one - the AA's (or perhaps AAA's) are much easier to fit into a compact case than a 9V battery.
This is a fantastic little project here - I've always wanted something that does just this to identify unknown parts.
I took the eagle files from the code.google.com site, and toner etched by own (double sided) board the other day, and have a working component tester! I used a mega168 that I had lying around. I plan on tweaking the code a little bit (could do with a tidyup) and putting it in a proper case.
I thought I'd share the case I made for my Logic sniffer. It's built out of 3 pieces of 6mm perspex and 4 screws, yet does a great job. It only has sides and a bottom, as the aim was to stop the PCB getting shorted by random wires underneath it on the bench. One day I will slap a piece of perspex over the top..
