Current Happenings

Over the past few days I’ve been working on a z80 computer. It’s on breadboards, and includes 2M flash, 32k static ram, and 3 IO ports. It’s quite interesting, and is clearing up lots of my low-level computing knowledge. More on that in a few days.

Today I put much larger motors on the X and Y axis of the mill, having already put a larger motor on the Z axis. The new motors looked great and ran equally as great for about 3 minutes… The new motors pulled much more current than the previous, and I couldn’t remember the ratings on the NPN transistors I used. Turns out its less than what i need.

When I get around to it I’ll make a new driver board with Mosfets rated at 50 amps, should take care of it. The supply I’m using is 5v at 50 amps, so I don’t think any single line can exceed its rating.

The new mill is very slowly coming along… I can’t wait until I can make huge things though.