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Tips & walkthroughs


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A track to provide locomotion.
  OK, I've been asked a few times about the tracks I made from bicycle chain. It's probably easier if I just make a tutorial and then I can direct anyone … Read more
A study on PWM outputs at Tiva C Series TM4C123G Launchpad Evaluation Kit (EK-TM4C123GXL)
After some months form Read more
A brief description about new open free courses online about Robotics, what they offer and what they lack
Last years we are seing new robotics courses online like the Embbeded Systems or Underactuated Robots from MiT. Read more
Testing basic functionalities on the Tiva C LaunchPad board and the Code Composer Studio v6 software
Checking (and finding) a better full software for firmware development for Tiva C boards Read more
sharing an experiment connecting a robot to Martin's 'shared brain' using a simple Python module
No matter how many hours we spend hacking code in our basements, our robots remain, shall we say, not the brightest lights in the harbor. Read more
A basic comparison between a new low power microcontroller and an known one produced by the same manufacturer (in progress)
Disclaimer: information stated in this article is for educational purpouses and under review. Not design decisions should be made solely with this information. You … Read more
Interface an lcd tft screen with arduino
Some of you may have purchased this LCD Screen or thinking of getting one. Its a great screen for displaying images and graphics. I purchased mine for displaying … Read more
Uses sensors to follow a line path
This Instructable shows the step by step instructions for building a cool little line following robot using the ActoBitty from Actobotics and an Arduino. Read more
Use A4988 stepper driver to drive two DC motors instead. Make use of currentlimit to control speed.
EDIT: Some speed control, new code example and video added 21.2.2014 See below " SOME IDEAS" section for more information.     I ordered some well known pololu … Read more
music and sound fx with minimal program memory usage
  Want to add cool music / sound effects to your project but don't have the required program memory? Want to avoid long codes to only add some fancy sounds to … Read more
At ServoCity, we field a high number of tech questions that deal with how to determine the proper spacing between the teeth of two mating gears. This spacing is a … Read more
Open hardware/software wifi module runs uIP TCP/IP stack. It has UART,SPI interfaces,GPIO x5 and PWM for intelligent control,but fingertip-sized only
Update: please, be careful as this review is based in a device that was updated from the manufacturer.  Would you like to command over wifi out of the box from you … Read more
Hi all, I currently do an online course at MiTx, 'Underactuated Robotics' by Russ Tedrake. 'Underactuated' basically means that the robot has more degrees of … Read more
Plot Pictures on a whiteboard
This is a review of the Makeblock XY-Plotter v2.0.. I have got the chance to test the new plotter. Many thanks to Makeblock for the plotter kit and the support … Read more
For better readability I have attached a pdf, which explains how linear regression is used for supervised machine learning. In this paper I also derived the general … Read more
An air muscle contracts when is is pressurized
I have been looking for alternatives for servo motors, and I stumbled apon air muscles. It seems to me air muscles are very promising they can do a significant … Read more
Robotic parts made with simple tools.
     Even with 3D printers and milling machines accessible nowadays, I guess this post will interest some people. From time to time, I am asked how I produce my … Read more
Gets your robot up and running through a Python App
UPDATE : 7/14/2014 : 1) Controlling a robot via a Python GUI added 2) Video demonstrating GUI control added. Read more
Brings back the Vin Pin
If you have ever seen some magic smoke hovering around your Arduino, I bet there was this involuntary movement that resulted in you snapping the power supply from … Read more