Let's Make Robots!
Phase 1 (Updated 29/4 - New video & code.)     Here's a little robot built on CTC's excellent Tiny Tank chassis. It's based on a Picaxe 28X2 which … Read more

Pololu Plastic Gearmotors and PWM.

Does anyone know what's the best frequency to switch at when you're driving the 120:1 Pololu plastic gearmotors with PWM via a L293?

These motors : http://www.pololu.com/catalog/product/1125

Nascar / Google - Autonomous racing.

Google have developed an autonomous vehicle for Nascar racing - Click "I'm steering lucky" on the Google search page or go to  : http://www.nascar.com/video/none/none/120331/cup-mar-google/

(And remember the date #;¬)

Picaxe M2 series 'multitasking'.

The M2 Picaxe series has multitasking (time slicing) to allow up to 4 tasks to run simultaneously which the manual says is to make monitoring switches and flashing LEDs etc, easier to program.  I was just wondering has anyone explored how far you can take the multiple tasks idea.  Has anyone, for example, tried controlling a servo, monitoring switches and varying PWM on a motor?

I've got a feeling that everything will get a bit glitchy, but perfectly happy to be proved wrong.

Palocell - 8 x 1100mAh AAA NiMH for under 6 quid!

Just come across these very cheap, high capacity AA and AAA NiMH cells on Amazon - 8 x 1100mAH AAA for under 6 quid delivered.  UK company - Worcester based, but I can't get much sense from their website ( http://www.palo.co.uk/ ).  I can't find any independent test data on them - The only promising link is a 404. Anybody had any experience with these? 

http://www.amazon.co.uk/Pack-Palocell-Rechargeable-Batteries-NIMH/dp/B005T661C6

Test bed for a 6 legged, 3 servo walker.
Using a
I was so impressed by the video of the Pololu hexapod walker I thought I'd have a go at one of my own.  This is a rebuild of my initial attempt using a PicAxe … Read more
Obstacle avoider. Other behaviours planned.
Using a
Early March - GREAT PROGRESS - Giving it a brain, and a problem solved. I've built the brain-board with its 20x2, pluggged everything together and IT'S ALIVE! - … Read more
A mechanism with a one-track mind.
This is something I built a while ago.  I won't call it a robot as it's very limited in its function - It only knows about FORWARD!  It was just an idea which I … Read more