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Tips & walkthroughs


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Add 10-bit incremental / absolute encoder feedback to your hobby servo.
Modified continuous-rotation servos are used extensively by roboticists due to their small form-factor, enclosed motor-gearbox, ease of mounting and … 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
If you are running out of input/output pins of your Picaxe here's something that might help you: Picaxe's configurable input/output pins can be used in three … Read more
Generating video to display basic text and information
I thought I'd show how video is generated with the Propeller as an example of multi-tasking and because video is cool.  Read more
My old printer broke down and before throwing anything away I always rip things apart hunting for parts that I can use in other projects. Most of you probably does … Read more
Make your robot to 2 (or 3, or 4, or 5, or 6, or 7) things at the same time
This is part 0 of a multi-part series.  The other parts are here. Read more
When building stuff I often need some sort of bracket or other fixture involving sheet metal. Read more
Controlling Picaxe microcontrollers with a computer or let them communicate
Using a
On general demand (ok, Fritsl asked me...), I will show and explain you how to let several Picaxe microcontrollers communicate with each other or how to control a … Read more
This might be useful for anyone building self-balancing robots or similar projects
This article introduces an  implementation of a simplified filtering algorithm that was inspired by Kalman filter. The Arduino code is tested using a 5DOF IMU unit … Read more
Joins a 5mm shaft with an 8mm lead screw
Introduction Couplings are expensive, but tubing and Shapelock (Polymorph) is cheap.  This is a cheap way to build a coupling between a 5mm stepper and an M8 … Read more
Basic principles in PCB design
I thought this could come handy. EMI and power surge problems are common in digital circuit design. The following list is a compilation of suggestions I have … Read more
Demonstration of How To Solder
Demonstration of how to solder.  Further info on how to solder: http://www.instructables.com/id/How-to-solder/ and … Read more
Turn your servo into a powerful linear actuator
Provided you have the tools and the servo you can built this for under a couple of bucks. The actuator extends with a rate of about 50mm/min. It is rather slow but … Read more
A simple explanation of IMU devices that does not require any advanced math.
 The full up-to-date text of article can be accessed here: http://starlino.com/imu_guide.html This guide is intended to everyone interested in inertial MEMS … Read more
Uses current generated on coils in stepper to act as an encoder
Pretty simple circuit I found, you may have to play with the resistor values to get the output to logic level depending on your steppper.It uses two voltage … 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
Takes PWM signals then feeds to an H-Bridge
Okey Dokey,  What I Have here is a relatively simple way to control 2 low to mid current motors with no fancy integrated circuits. This is just a nothing special … Read more
This project shows how to add text-to-speech to an Arduino project using a SpeakJet and a TTS256.
This how-to article describes an easy way to add unlimited text-to-speech to your Arduino projects (with a bit of modification to my source code below, the PicAxe, … Read more
Basic instructions on how to add one of the most commonly available fuel cells to your next project.
Fuel cells! Power source of the future! Ever thought it would be cool to have one of these things powering your next big project? Well now you can, because I'm … Read more