8×8 LED matrix on an Arduino

I picked a SZ410788K 8×8 LED matrix out of my junk bin today and decided to play around with it. It cost me about 1USD in Aitendo, Akihabara. A little googling brought up the following: I decided to hook it up to an Arduino (yea I know, I know). (more to follow) Here’s some quick …

LM1117 notes

I pulled some LM1117 voltage regulators from a bunch of routers. I want to use them in another project so I knocked together a quick circuit to test them. Here is the basic LM1117 schematic: And here it is built up, using mostly random parts from my junk bin. R1 is 200Ohm, R2 is a …