Let's Make Robots!




Proposal of MoMo 0.9 with WiiDAR

A4988 and steppers My experience and mistakes

I've bought a few of the pololu stepper drivers A4988 to populate a ramps1.3 board used in printrbot. Before building the mechanics I soldered together the ramps board and plugged it all together with my arduino mega2560 and the drivers. Having tried to work out the best software combination with marlin version and either pronterface or replicator G I could not for the life of me get any action from the steppers in the control panel for either host software.

My artificial neuron approach

February 12, 2015

A single artificial neuron can represent some simple Boolean functions like OR, AND or NAND and some like XOR not, because a single artificial neuron can only learn linearly separable mappings.

Example. Perceptron for the AND function:

Mr. X becomes Mr. Red Adair


This is one of the main part for my contribution of the LMR Dagu contest. It looks like a small camera and yes indeed it is a camera. But this camera didn't give you a video or picture output. Mhhm, than it must be defect you may think.

cr4cX Motor Controller

This blog is about the cr4's motor controller - updated 2012.03.22

Controller features:

  • controls two H bridges;
  • reads, interrupt based, two quadrature encoders;
  • implements PID algorithm for controlling the speed of the motors;
  • synchronize the motors;
  • communicates through Serial and I2C/TWI;
  • monitors the supply voltage;
  • monitors the current through the motors.

R2D2 dome

This is part of my mini-R2D2 project. I intend to keep blog pages for the different parts of the building process. 

The dome is made out of a clear plastic sphere. I found 2 globes 16cm in diameter and 2 smaller ones 4cm across.

First step. Dremel off the bit that is sticking out and sand the whole thing. 

Going to China


The last 6 months of my life have been full of ups and downs. I have been on workcover for the last 6 months for an injury I sustained at work. This gave me the time to discover LMR and make new friends (and robots). Thanks to LMR, Jack from DAGU discovered me and is now producing not only my robots but will soon produce other robots from other builders at LMR.

Cheap and small swarmbots

So. I'm finally building swarmbots. My goal is to have bot that is small (should be 25mm x 25mm, will be ~30mmx30mm) and cheap (less than 50$ per one. even when building only one).



Computer On Wheels Controller

Hi guys,
Since last week, I've been learning c++ and openFrameworks and creating a application to control any robot with a computer on it or, at least connected to one by someway.
It is supposed to be simple to implement and use.
You just need to run the application and program your robot to read the following chars and act corresponding to them:
  • 'w' to move forward;
  • 's' to mo

Ant Bots and Spyder Bots--My Version of Swarm Robots on LMR

Just browsing through LMR, I found that many people are interested in the concept of making swarm bots (the most prominent being Lumi and his team, Aaronsuper1 and warnew). After a short discussion with each of the 3 I mention via shoutbox, I decided that swarm bot is going to be my second project.

"Moooo" Rare Swiss Cow Project has begun

Following on from the Laser Experiments i have decided to attach it to some kind of walking Robot.

I am now a avid fan of Theo Jansen -  after rik brought him to light in his Blog.

So far i have Prototyped two pairs of "Theo" legs using "MindStorms" as an experimental base.

It worked better than i could have imagined - these legs go like a Cow on its way to the milking parlour.........

Only problem now is what  medium shall i use to make the final version.....

wrt54g as robot brain

Andrey Mikhalchuk demonstrates how to hack a popular wifi router to have an rs232 interface (or two). The openwrt project allows us to actually use that powerful hack. Andrey did what few people did before: he added a micro servo controller and TING robot's done!

My First Robot

Draft Robot Page: http://letsmakerobots.com/node/12713

My first robot is a Valkyrie CNC using TinHead's example: http://letsmakerobots.com/node/9006


Vector Drawings: http://letsmakerobots.com/files/clone_cnc_vector.pdf (draft)
Measurements will be available for these drawings by December 2009 or if somebody bugs me for it.