Let's Make Robots!

How do you tell if a PicAxe 14m is bad?

I tried downloading my program to a picaxe 14m.  Now all pins show 4.5v, no matter what program I load. I did a firmware check and it says it loads a new program, but nothing changes.  How do you tell if the chip has gone bad?  The error probably lies somewhere between the seat and the keyboard, I know...just need to know which error.

Mech

A not so dumb but practical motor controller

I've been working on Leo's motorcontroller and reading a lot lately on bots.  It got me to thinking about using multiple uControllers to do multitasking.  I've slimmed down my original motor controller concept to just a PicAxe 14M, a L293D and some resistors. What makes this motor controller different is that it does more than just control the speed and direction of two motors for an indefinite amount of time.  It's possible during setup to make it that each command only last for five seconds or increments of five seconds.

Ethical Bots?

I found this article to quite interesting, though I don't think we are quite there yet.

http://www.physorg.com/news/2010-11-ethical-robot-video.html?ref=nf

 

What I want...

I've been thinking, while troubleshooting, a lot about what I would like in a bot. At first I'd  thought about a bipedal bot, but tracks are more stable, easier to work with, require less programming and unless you are using a large base for a bot it won't do stairs.  To be autonomous, to be able to do tasks without human control, such as recharging itself and performing basic tasks.

Problem with SparkFun PicAxe USB programmer cable

Ok, got to the point where it's time to start coding and I got power to everything that needed it and started installing the drivers needed for the Picaxe programmer cable. Well to no avail. If anybody has an idea a walkthrough it would be appreciated.

 

Mech 

Motor Controller Board

Well I've almost had 3 weeks offline and got a ton of thinking done.  The physical design is basically the same, going to use a PicAxe 14M to control four DC motors with two L293Ds. The picaxe will be optically isolated from the arduino, so if the motors, an IC or a wire shorts out and decides it doesn't want to go alone that it doesn't have the arduino as an option as a buddy in IC heaven or hell.

Finally back online

I had to put my laptop in the shop because the mousepad was screwy and it wouldn't recognize a regular mouse. It's all good and shiny now though. Back to working on Leo.

 Mech  

A few 130 size 6v motors to swap, direct replacement for tamiya 130 size 6v motors

I have a few size 130 6-12v motors to trade. If you are using tamiya products that use the 130s, and want to use a L293D or it's equivalent. I'm looking for all kinds of things to trade. Email me offline to discuss things. If you don't want to trade they are $2usd each + $5usd domestic only. International orders please email for shipping quote.

 

Mech 

Just some random thoughts

It's 5am and I'm still working on a project, not a robot or even bot related project *sigh*.  We all do what we have to do in order to clothe, feed and shelter ourselves and those we love if we they live with us.  This got me thinking of my bot Leo, and a few objectives I have for him such a new body for himas being able to 'feed' himself, and making a bot 'home' for him.

    Is it possible to make a compass from something that was designed for something else and to do it inexpensively? We shall see!     Goal: To make a robot … Read more