Let's Make Robots!

Recently Collected Posts

Having finally got the CNC mill working, I've built another Robot. Its straight off the mill, and I couldnt wait for the battery box I designed the holes for to … 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
Price: $8.75 USD

 Collected by 2 members
The Tamiya 70157 Universal Plate Set (2pcs.) provides a reconfigurable platform for building your own robot chassis. The set comes with two plates with gridded … Read more

Entry For Oddbots Robot Video Competition

Hi all, it's 2:44 am (yawn), and here is my video.


I spent ages trying to work out the music for it only to find out just before uploading it

that Youtube will probably mute it :(


Oh well. if it happens i'll try another service.

anyway do enjoy. 


Looking for a more flexibility out of your Sumovore, but you’re not too up on programming? The PICAXE is a PIC-based solution, programmable with flowcharts - … Read more
Price: $9.95 USD

 Collected by 3 members
Looking to build the smallest, handiest, bread-board friendly Arduino-compatible? The Ardweeny fits on the back of the included ATmega328, taking up no more … Read more
Price: $3.95 USD

 Collected by 2 members
This semiconductor gas sensor detects the presence of combustible gas and smoke at concentrations from 300 to 10,000 ppm. The sensor’s simple analog … Read more
Price: $19.95 USD

 Collected by one member
This gyroscope board is a basic carrier/breakout board for the ST LPR510AL dual-axis gyro, which measures the angular rates of rotation about the pitch (x) and roll … Read more

Motor Control for 6WD Wild Thumper

Open call for suggestions:

I own a bare 6WD chassis "Wild Thumper" by Dagu, designed by Oddbot. And I have (2) "racing packs". Those are basically 6 NiCd cells in series, providing 7.2 Volts nominally. The motors are rated for 6 V. Stall current is listed as 5.5 A.

Even the most basic speed control will need some sort of amplifier for the PWM signal. Let's start very simple. Just speed control. Just one motor. One direction. What kind of transistor shall I buy? And what kind of circuit shall I use?

This is not the first robot I have built. I built it one weekend when I was unable to use my computer (so I was bored), and just using parts I had at my … Read more

Force sensor

I've already been 'bitten' a couple of times by waiting too long to write about things, so I'm going to try to post about things when they come to me.

Measures your pulse/heart rate
The circuit shows a sensitive finger-type pulse detector. The concept of the circuit is simple. With the alteration of the blood volume in the finger the … Read more

Mini Robot Master

I wanted to create this blog about an Instructable memeber I've read about a while back.

navigate, recognize faces, speak, obey voice commands
Using a
Ok this is my new bot Beryl (cause she's blue...) This is my big robot, intended to have a nano/pico-ITX PC inside with windows XP.  She is powered by a 5AH SLA … Read more

Simple Audio Preamp

i found an easy to make audio preamp that i intend to use to measure a sound with an ADC input on my arduino. i want my robot to respond to me clapping and start a drumming sequence. I may have to use some aditional circuitry to turn the output to a simple high pulse when the sound goes above a certain level, this way i can use one of the arduino interrupt pins to start the sequence at any time. heres the link:


here is someone who has used it with an avr chip


A different method of propulsion using gears

Ways of communicating with a PC

A nice inspiration to control robots / communicate PC <-> Robot

Sharp GP2D12 and Object Detection

Hi all,


I'm trying to use 2 sharp sensors to detect an object which is placed near a wall (see pic). The problem with these sensors is that the readings will fluctuate even when it's static and if the distance is far, it is harder to differentiate the object from the wall.

the sensors are mounted on a moving robot. Any suggestions to detect the object?

All started years ago, my dream was to build a CNC capable of routing PCB's but at that time I was unable to find the budget and the material to build one as well … Read more
Modify your rc-servo into a computer controlled fully funtional servomotor with 12-bit absolute feedback (4096 positions - 0.08 degrees resolution)
Yes we like servo mods! Read more
This is my very first line following robot that is built around ATMEGA8. Construction and circuit are quite simple. Such a name- GOOFY is given because robot … Read more

picky motors?

 So I'm a complete beginner at this. I know ohm's law and generally what components do, but I've never tried to put anything together yet.

Has the potential to be a slave-master to any of my projects.
Using a
This remote represents my journey from knowing absolutley nothing about RF communications, to a little bit. Built from scratch, the remote runs off a PICAXE 28X2 … Read more
Buzzes around by manual remote control
Using a
My very first encounter with electronics - a very simple manually controlled robot. The main brain controlling it is a Attiny2313 + a motor driver board based on … Read more
Drives around on fridge door, water heater or table
Using a
My LadyBugBot clone is finally finished. Or finished the second time because it got broken earlier. Now I kinda cheated and shot a new video of it running on a … Read more

AVR C is hard!

Well, last week I got several packages of parts with lots of sets of ten. I got ten 8pin sockets, ten CR2032 batteries and ten battery holders, and most importantly ten attiny85 MCUs. I figure I can use this set of parts for a bunch of small projects, but my first project is to make a tiny bot! I've already got some tiny pager motors, and some ir emitters I can use as light sensors.

Converting a PIC program, to arduino C

Hi, i found this code on the net, but i need it in arduino C, i have no knowledge on it, and no idea where to start translating...

there is also this one, in basicstamp i presume...



This is my second robot! With a better understanding of robot building and navigaton programming i´ve came up with this robot! I think that the great improvement … Read more

Fast robot? (as in fast computing) how ?


So right now im planning for my first robot, I want my robot to be as fast as possible,  but I'm not talking speed wise(atleast not yet), rather 'computing'.

I'm thinking learn assembler ? I've understood its a painfull programming language to learn, but the programms are fast and powerfull. Offcource I could probaly solve my computational problems by just buying a faster ic, but those are difficult to get a holdof and not to mension expensive.