Let's Make Robots!

Most Collected: Tip/walkthrough

Helps you burn the bootloader on a ATmega168PA.
Introduction: These instructions were based on Arduino 1.0 running on Windows XP. They should work for other operating systems. Since version 0018 of the Arduino … Read more
Gives all directions for two motors
I designed this circuit for those interested in controlling motors that require a lot of Amperage, but have gotten frustrated over trying to create a MOSFET … Read more
On old trick to get more power out of your cheaper motors
Here's an old trick, but it it's good. if you have a setup with a (cheap) motor, and you'd like a little more juice out of it.. get some of them strong magnets, … Read more
The GWS servos are extremely easy to modify to continous rotation, here is how :)
Thanks to  ndupont for this: http://letsmakerobots.com/node/4873 and to Anders for this:http://letsmakerobots.com/node/259 - Now I had some GWS-servos that I … Read more
I recently got in a few parts to complete my smd soldering station and I would like to share my experience along with you. I found that I have started wanting … Read more
Steps battery voltage up or down.
The MC34063A is an easy to use DC-DC converter that can be used to step battery voltage up or down to run your processor, small servos or to make an efficient LED … Read more
Add a cheap ADC converter to your next microcontroller project using a few basic parts.
Ever find yourself in need of some extra ADC capabilities? Maybe you have a micro with no ADC built in, maybe you've used up all your ADC pins already, or maybe the … Read more
Provides instant life to a robot that you are building
Nick from Gadget Gangster is one guy in the suppliers business who has truly understood that if you support the community, the community supports your business. I … Read more
How to get a photo-interrupter to work as an encoder
I salvaged some photo-interrupters from some printers and scanners. Thinking they would make good sensors, I decided to use them as encoders on my robot (which I … Read more
a spreadsheet giveing a overveiw on how multiplexing and help, and when multi-multiplexing helps
  so there was this one night i was up late and had to do homework.......  Read more
Hi LMR...          I think that you often run into the problem with MCU that when you press a button it read it not only one time but often even 50 times or … Read more
If you are designing something so complex that you actually have to think (!?!).. and you get frustrated about how ugly you draw :) .. or perhaps you'd like to … Read more
Introduces Arduino Programming to PICAXE users
There has been a lot of interest in stepping up to the Arduino by PICAXE users. Since the Arduino programming laguage is "C" like and not "BASIC", there are … Read more
There are three commands in Picaxe Basic that you can use for making sounds/music on the Picaxe. I posted my code as a file attachment, and there are some examples … Read more
In my current project I have a rotary switch as a sort of menu selector. Read more