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Tips & walkthroughs

 

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make a cheap servo rotate forever!
Here is how I've modified cheap e-bay servo for continuous rotation, Thanks to Oddbot for his explanations :)    Servo is a SG90 ,  equivalent to HXT900... and … Read more
French version of the "start here" robot
This article is only a translation on fritsl's excellent tutorial, all credits goes to him. Read more
can follow a black line on a flat lighter surface
Using a
This is a walk through for a simple line follower that can follow a black line on a lighter surface, i used black insulating tape on the floor. The robot can be … Read more
Displays stuff sent through a serial connection from a PC or Microcontroller
Using a
10 October 2009 I discovered a flaw in the current design that will only allow the controller to work with a connection to the computer and not to a … Read more
We all know that a robot is supposed to move. Without movement, a robot is just dull. The same goes for pictures of robots. We wanna see them move! Here are a few … Read more
drive a parallel display using a 8574 port expander
Using a
Any parallelly interfaced character LCD you get these days will have a Hitachi HD44780 chip or a different one compatible with the HD44780. These usually have 14 … Read more
Recently I got two XBee modules. And after some struggle with serial comunication I finally understand how to share data between two Arduinos. As a start I used 2 … Read more
command an actuator through wifi
Using a
This describes how to use the GPIO on a wireless router as binary outputs and how to control your electronics from the linux commandline. Software I started out … Read more
When I ordered my solarbotics track kit, I threw in a few of their "baby" GM motors thinking they would be fantastic for mini robots. When they arrived and it came … Read more
Framework for multi-tasking in BASIC on the Picaxe 28X1
Using a
Multi-Tasking BASIC programming on the Picaxe 28X1 Calm down dear, it's only a BASIC program. Read more
Shows you what kinds of things to consider when picking a battery for your robot
Uses a webcam and robot vision to navigate around obstacles
Obstacle avoidance is one of the most important aspects of mobile robotics. Without it robot movement would be very restrictive and fragile. This tutorial explains … Read more
A way to control more LEDs than you have pins in your chip!
Update: I added a video with my grad cap hacked with 64 individually addressed LEDs! This multiplexing/matrixing/array-ing sure is fun :3 This is pretty barebones … Read more
Let two, three or more picaxes talk to each other
Picaxe serial bus   This walkthrough shows you how to make multiple picaxe chips talk to each other using 1 line. This works for all picaxe models but I only used … Read more
When a button is pushed on an infrared remote it makes an LED blink
Infrared Sensor (LED020) from the PICAXE store was used. http://194.201.138.187/epages/Store.storefront/?ObjectPath=/Shops/Store.TechSupplies/Products/LED020   Read more
Need a bendable gearshaft quick?
A lot of Eureka moments have happened while making Mr. Tea, I came accross this idea, and had to share.   I was looking for a cheap way to make a bendable … Read more
Tips on EEPROMS, i2c, scratchpad and variables
The picaxe 28X1 has some very cool memory features that can be used to free up program space or to give your robot a more convenient user interface. This post … Read more
head follows an object around the room
I was looking for a way to have a robots head follow something or someone around. The best results I found were the ones using a camera, but these are a bit … Read more
Takes servo outputs and sticks them in a Picaxe
Using a
I had asked in a forum post if a picaxe could "read" a servo output comming from another source... Thanks to the OddBot, as he nailed it. By the way, O.B. I simply … Read more