Let's Make Robots!

Tips & walkthroughs

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
You can detect footsteps, and the world below!
I just discovered geophones by watching the video. Check it out, Geophones, it's the latest. You can make one by hanging a magnet in a rubber band, and let it … Read more
A quadrature encoder, also known as an incremental rotary encoder measures the speed and direction of a rotating shaft. Quadrature encoders can use different types … Read more
Cylon bouncing light bar using PWM signals to control the LED brightness
The impressing reason why i bring this tip to your attention is the ability for the propellor chip to drive 32 PWM channels without even battering an eyelid … Read more
In this tutorial, I'll show you how to use the Parallax Serial Terminal for debugging with the Propeller.  This builds on my other tutorials which you can find … Read more
Gives you a wireless connection to your robot
Recently I tried to set up a wireless link between my laptop and a robot so that I could upload new sketches and adjust certain parameters of the program while the … Read more
Wireless telemetry + video with 3 resistors and 6 feet of hookup wire
Using a
The Prop can generate NTSC, PAL, or VGA video signals.  Most users connect to their TV through a baseband (RCA jack) input.  Baseband is great for a wired … Read more
Well, it can grip stuff, and your robot can use it as hands!
**Watch the video!** To make this project you will need: Read more
When making a Sumo-style robot, make it celebrate it's victory easily
Sumo robots are very, very fun to make (and always make 2). Tip on programming your Sumo robot so it is more fun to watch: Unfortunatly I had my sumo-period just … Read more
visualizes uC data - if your robot is part puter - you can use Alerts to change behavior
  For the robot enthusiast nothing is more helpful than your trusty Oscope.  Equivlent to the a cowboy's trusty steed. Your faithful oscope will deliver you out … Read more
In this tutorial, I'll show you how to write data to an SD or SDHC card with the Propeller.  This builds on my other tutorials which you can find here. Read more
I read on the Arduino forum about using cheap Nokia data cables as a compatible "FTDI cable". I decided to have a look and started to shop around for a compatible … Read more
Communicates with your pc to control your robot
The wiimote is a really cool controller to use with your robots. It has many buttons, accelerometers and even a camera which tells the coordinates of the four … Read more
If your robot is inside another room, on the floor, has the board hidden within a tube, or you want wire contact while it's driving around on the floor..
Yes, I know that this is very, very basic, now that people here are making robots that flies into space, stereo vision, multi core and all.. But I just did this so … Read more
Converts analogs into digitals so you can read the outside world
  Many fast processors, mcus, mpus, etcetcetc fail in one very basic way ..... "NO ANALOG INPUT" (yes i am shouting at all manufactors that fail this basic … Read more
  This is a review of the Cyperbolic Reflector  Available at Gadget Gangster   For complete specifications and assembly process, download the PDF at the top … Read more
Plays wave files from a AVR based MCU with very little external hardware!
Using a
Last year I wanted to add sound to a bot so I wrote a program that plays wave files.  I later rewrote it so that it would be completely interrupt driven so that I … Read more
I have had this board in my hands for over a month and I have to say that this review may be a bit complicated. I feel that I not only need to review this board … Read more
  This is a review of the BahBots 1284p controller board designed by: Glen Aidukas and Eddy Wright glena Unboxing: Read more