Can use 3AA alkaline, 4AA NiMH, or higher voltage battery packs with the 5V 3A LDO on-board voltage regulator (can be disabled for AA battery packs).
Included quad H-bridge driver for bi-directional control of two small motors.
Option for PWM of motor driver’s ENABLE lines for speed control.
Five pins available for working with servos or LEDs (resistors selected with jumpers).
Option to use two power supplies. Second supply can power the motor driver and/or port B.
Can power port B pins with third serparate power supply.
Ability to use both SEROUT and A.0 pin on leg 19, jumper selectable.
Power indicator LED.
Some of the silkscreen stuff is not spot-on but I’m working on how to label the headers meaningfully and in miniature. The only thing I don’t like was the loss of one mounting hole. It was unavoidable to accomodate a double-pole switch that could handle some current. It should also be noted that the silkscreen outlines for C1 and C2 are slightly oversized so the overlaping should be ignored.
I hope I got what was being suggested in the preceding related post. I thought the post was getting garbagey so I fired up this one for cleanliness. Still looking for any and all suggestions!
edit-
In a flash, I added terminal blocks for motors to appease the CtC-types out there So v0.9.1 included for review:
Looks good, but what kind of terminal blocks did you use for motors? Screw connectors? They don’t look like them…
If you want to use the screw connectors, you will find them in the “con-wago-500” library, part “W237-102”. Make sure you place them exactly side by side with the common edge perfectly overlaped. Look at my RBA to see what I’m talking about. Oh, and the little holes go towards the exterior of the board. You may want to edit the part and change the shape of the pads to Round…
I decided to make my own KA378R05 part and saved the v-reg library under a different name and edited the 78XX part to became KA… Not really making a new part, but I can use it.
The terminal blocks are P/N:MBE-152. The footprint is a custom job, that’s why it looks like crap. Actually, that might be the old footprint for the Radio Shack PC blocks I bought awhile back, I’m not sure. It looks like the MBE-152 footprints though. On second thought I might just use the four-pole MBE-154 blocks though. Seems easier since I have them arranged side by side now.
I hit up findchips.com for W237-102 and it came up with nothing. Do you have another part # for those blocks? I’d check out the library but I’m at the salt mine currently.
Yeah, sometimes the part names in Eagle do not make sense. Remenber, it was developed years ago in Europe, lots of German electronics parts in there… But here are the real connectors:
So v0.9.1 included for review:
