I’m toying with the idea of making a PCB layout for a PIC control board. If other folks here might be interested in buying one or more of the boards, then it reduces the cost for everybody. Just brainstorming, here are some thoughts: It would NOT be a “be-all” robot control b…

I posted a picture at: www.geocities.com/saipan59/robots/rear.jpg This view is looking at his rear-end. The new PIC brain is on the back end, with a serial cable plugged into it. The other cable laying on the table plugs into the ICD2 programmer. Directly forward of the brain…

Hey, Pete. I just got a free moment and figured that I’d update you guys on what I’ve done (or the lack thereof) with the dual PIC board. So far, I’ve assembled the board, assembled board for a (not perfectly working) speakjet and (properly working) robot ear circuit. I wrote …

I wouldn’t necessarily call the dsPIC bad. Measuring resistance doesn’t mean much, unless you compare it with an identical known-good part measured in the same way with the same meter. This is because the semiconductor devices behave differently according to the voltage, polarit…

If you are using low voltage capacitors, something less than 10V like 6.3V or 4V you should consider they may have died. Tantalum capacitors in particular like to die to low ohm resistances from a few ohms to a few hundered depending on how badly they are abused.

I just uploaded new code to: www.geocities.com/saipan59/robots/dualpic.zip It’s code for both the 4620 and the dsPIC, version V0.2. A lot of good stuff is working: The 4620 talks I2C to my sensor board, motor control board, and the dsPIC. The dsPIC talks to the SSC-32, using…

I have my eye on this OOBOT40-3 Robot Control Computer as a possible carrier for PICs. It is supposed to be able to use 40 pin PICs also and the ooPic it comes with is based on an 18F PIC. 8-Dale

A parts list of what you actually use to build your board would be helpful. :slight_smile: I’ve put together the following so far, but have not yet combined everything by component value or looked at the other images for additional information. I took the following from the sc…

You’ve pretty well covered the parts list I think - all the good info is on the schematics. Some parts-selection suggestions: The ‘brown-out buffer’ is probably of limited use. Replace D5 and D6 with wires, skip C2, and put C2a in the place of C2. This change will give you a Vc…

Ah, good. I wanted to make sure I had not missed anything. Ah, OK, noted. Durn, I went dyslexic there. I’ll correct that. Basic Ohm’s Law. I knew that, but included them in case somebody else wanted to do it. 8-Dale

PIC control board PCB

Let's Make Robots Projects Showcase

linuxguy November 25, 2006, 11:42am 118

It’s all getting better and better!

I just checked Microchip, and my second order has shipped which I should get around Nov 30th.

If anyone needs 4620’s and dsPIC4011’s for your boards, I will give away two each of mine when I get them. I plan to use mostly the 4680 and dsPIC 4012 or 4013 for my boards after I build a board stock and have it working. I am also getting a 4685, but it was backordered.

8-Dale