Let's Make Robots!
It is controlled trough IR commands
Using a
Hi all, This is it! As I got a fully (more or less) functional CNC (see here: http://letsmakerobots.com/node/24217), I can finally start doing what I have intended … Read more
  Hi all, Behold my new little toy, the CRAB. This is my attempt at creating a 4WD rover like bot, the main target here beeing making use of the little motors I … Read more

Campus Party - Milenio 2011

Hi all,

It looks like Spain misses us, they doing yet another Campus Party with free invitations. So I'll post my tank and the crab and hopefully some of you will do the same and we'll have a little LMR reunion :D

If you were ther before you should get an emil in spanish, if not you can subscribe here for an invitation:

http://milenio.campus-party.org/2011/main.html

Cheers and maybe see ya there friends!

I need advice for a power transistor

Hi all,

Since DanM posted his laser blog I was hooked to the idea of pulse driving laser diodes.

I have created my own pulsing hardware using an ATMega328 to generate a 62.5 ns pulse at 16 Mhz, driving the diode trough an ULN2803 (Toshiba made) which seems to be able to respond well to such short pulses. 

However the ULN2803 is limited in power output so the highest current I could sink is about 700mA (I know the ULN2803 is limited to 500mA yes) by parralelling outputs. At this level the ULN2803 is way over its limits and starts overheating.

What does it take for you to call your creation ready, done?

Hi all,

It seems I never can call anything I'm working on done. I always have to fix this and that, tune this and that ... in the end I'm fixing and tuning it to the bitter end as it happened to Z39 ... it never ends I'm never really happy with it, the same as with the CNC machine. Finally I just start working on something else leaving the old project gathering dust ... just to discover it after a while and start all over again :)

So how do you guys go about this? How do you arties handle this? How about you techies? 

Review: Solarbotics Zendulum

Intro:

It's time to find a sunny spot in the house, put on some chillout background music, light some aromatic candles, all in all prepare to get in a Zen mood :)

Ready? Good. The last missing piece is the Solarbotics Zendulum to complete the scene:

Review: Guibot's Motoruino

Intro

The Motoruino is an Arduino based robot brain, which includes everything needed for a small robot onboard.

Z-39 was "Yet Another Tracked Bot" - Build blog

 


Hi LMR,

Now that the Phoenix CNC works good enough to do some real work, I have finally started working on a new project: 

YATB - Yet Another Traked Bot - at least until I find a better name for it

I will try to document it's building saga here, before creating a robot page for it. 

So without further intro:

Phase one: Tracks

First I have done some Blender designing, I came to design something roghly as below:

Hi all, Phoenix is almost ready for prime time, mechanics almost done aside for e few things here and there. Some pictures … Read more

Phoenix Rising

Hi all!

A new year, a new reboot.

Valkyrie is officially dead, buried, gone ... RIP Valkyrie. 

She did her job, teaching me a lot of stuff about mechanics, electronics, programming and building stuff in general. 

Probably the most important thing I learned is to take your time doing stuff, because finishing fast does not always mean you finished good, sometimes you end up with a really crappy part and all work was in vane. Starting with  2011 I'll take the time to do it right, no mater how long it takes, if the end result counts.