Let's Make Robots!
Let's face it, I've been a total slacker when it comes to building robots (I can hear the distant voice of fritsl mumbling something about never finishing my robot … Read more
I was inspired by Chuck McManis and his BJT-based H-bridge tutorial and I wanted to build a similar H-bridge based on MOSFETs. The design goal was for the H-bridge … Read more

New controller board

Hello, it's been a really long time, since I last posted something on LMR, but now I've made a new controller for my robot and I thought I'd blog about it.

The controller features

Back in business

It's been quite a while since I've been active on LMR. I have been working a lot on Java programming instead of my robots, but now I'm back with new ideas for my "Robot Hansen" robot who will get a serious upgrade from his current picaxe 40x1 chip: He will have a LEGO NXT controller as main brain, a cmucam3 for vision, several ATtiny26 based sensors and actuators. All this because he will probably be going to DTU Robocup 2010.

Scripted driving for testing and finetuning motor control
Using a
This is my supposed entry for the 2010 DTU Robocup challenge. The body is made from LEGO Technic bricks from the Robotics Invention System (the old MINDSTORMS set) … Read more
Burn its motor driver IC
Using a
Say hello to my Mr. Basic. He's currently not into anything exciting - other than burning his L293 chip (Mr. Basic likes burn-outs). He will someday get a descent … Read more

Tiny adventures in motor control

Since my last blog entry about using timers and interrupts on the Atmel Tiny 26P, I have put together a driving lego monster with homemade dual h-brigdes that in principle should be able to eat something like 25A or so - of course the wires used are not able to carry that much current but hey I only had those IRF540 and IRF9540 hexfets lying around :-).The controller is still the Tiny26P and my goal is to make this my I2C enabled motor driver for later use with other stuff.

Fun with timers and interrupts on Atmel Tiny26

A long time since my last post on this site... Anyway I've been experimenting a little with my Atmel Tiny26 uC today using AVR Studio 4 for development and the AVR ISP mkII programmer to program the uC.

Gathering experience with homemade PCB

Oi, yesterday and today I have been trying to make a homemade PCB using Eagle for designing the PCB and printing with a laser printer onto some glossy advertisement paper from junk mail. After several attempts I still haven't gotten a good transfer of toner to the PCB (check images) and I'm wondering if I should just design my PCBs and then send the design files off to Olimex for production

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