Let's Make Robots!
For a long time I have had this urge to build a 3D printer. Not because I want or need a 3D printer, but simply because of the build it self. As always, cheapness … Read more
Wakes a monitor from power down when somebody enter the room
Hacked a cheap PIR sensor into a nasty old mouse to wake up a wall mounted monitor when somebody enters the room. Schematic is super simple, right side shows part … Read more
UPDATE: 2015-05-24 IT'S DEAD. I abandoned the build and used the parts for other projects! Kossel 3D printer inspired pick-n-place robot. no particular purpose … Read more

Stepstick A4988 issue

Recently I came across the following odd observation with a Allergo A4988 based stepstick stepper motor driver. I hope others will redo my experiment and tell if they see the same.

Those who doesn't know the stepstick can have a look here: https://www.pololu.com/product/1182 Of course mine are cheap clones I got from ebay, but they should work the same.

Flips a double hourglass every 3 minutes
I made this little silly build because I got my hands on a business gift at work. It's a double hourglass where one glass is regular but the other side lacks the … Read more
Make the shoutbox wide, a super productivety killer
Today I did what I'm best at, getting others to work for me. And todays victim were basile. First a little lure: 2013-10-29 09:12:00| |mogul| |@basile you are … Read more
This is the next iteration of my way to a maze solver. Frame and motors is the same at seen in Wood and Glue roller http://letsmakerobots.com/node/29816 As seen in … Read more
Allows me to program my Arduino via bluetooth, USB not needed any more
I finally figured out how to program my Arduino controlled "Start Here Robot" clone without leaving my chair using bluetooth. Unfortunately it still only works when … Read more
Videos: http://www.youtube.com/watch?v=Pbb9GOWaL4g and http://www.youtube.com/watch?v=mPakG8p3MHE Update: Added schematic for the vacuum system Code word were: … Read more
Beeps then the dog's water bowl is empty
For a friend of mine I made this small alarm that goes off then the dog's water bowl is empty. We set the following design goals: cheapbattery poweredmaintenance … Read more