Let's Make Robots!


"The Better Mousetrap" Servo Tester

I've decided that my new servo tester (based on RoboPi) deserved a page of its own on my site, and that other LMR users may be interested in following my build log.

"The Better Mousetrap Servo Tester"

You can find the build log, and more photos at:


(The jitter issue is now identified as the MG-995 servos needing unusually clean servo power)

3D Printer Build

My friend Mr. Ossipee recently asked me how my printer build was going. So I decided it was time to start blog to chronicle my blunders! :)

I started out with a very ambitious plans to build a hybrid rostock style delta printer. As you can see below I had ordered quite a few parts in preparation for the build.

Arduino Mega, Ramps 1.4, and Display.


Project 2: Tidying up

Last two days have been frustrating - work has prevented me from working on developing my skills.

I did, however, manage to shorten the huge loom of wiring that came attached to the motors; there was a little board with 6 straight-through connections already attached near the motors on the base, so I soldered the 2 wires of each motor, plus the battery wires, to one side. The other side i continued the connections to the motors shield.

Project 2: And so it starts...

So, today, full of motivation (now I have figured out a rough plan for my project), decided to start learning the techniques to help me build my project.

Today, using a donated toy base (tracked, with 2 12v motors and gearboxes to boot), I added:

  • an Arduino Uno
  • Arduino Motorshield
  • Two 4xAA battery packs (in series to provide 12v). 
  • A Bluetooth module.

Using some arduino code I had developed for my Wall-e task I was able to move my tank around - ruddy good times!

Project 2 - my first project!

I've always has an interest in robotics and suchlike, however never really committed to taking that interest forward; coding and suchlike are my favourite parts but i am inept when it comes to the hardware side.

I keep going through phases where i plan to learn, to do... but never do.

Recently i actually started a project, however - to take a Wall-e toy, rip out the innards, give it a few motors and servos and add an Arduino (with motor shield and bluetooth Module) to keep it together.

Using the Arduino PID Library for precise position control of X and Y axis on RepScrap printer

I've updated the test code I'm using to manage my X and Y axis DC motor / linear encoder closed loop controller.

A simple HTTP communication protocol between wifi and Arduino

How to let the sensed data (e.g., temperature) on the Arduino send to the remote server? 

The following code is used to realize this function.

void setup()




void loop()


   int n=analogRead(A0);

   float vol=n*(5.0/1023*100);





void upload_sensor(float vol) 

     // send the HTTP PUT request: 

     char buf[200];

Further Progress on framing my RepScrap 3D printer.

Well, this is what the RepScrap looks like today.


Yahmez Goodies!

On the 20th of April, I got a quote from the post office reminding me to collect all oversized packages that did not fit in the mailbox. Surprised ( as I did not had a mailbox ) and curious ( wondering what might the oversized package be! ), I rushed to the Post Office with the small piece of quote in my hand. ( That's the unofficial system we have out here! )

 I retrieved the package that mentioned PRIORITY MAIL in BIG LETTERS. I flipped the package and the entire story became crystal clear as it read " Robot Parts x 10".

Robots Ready to Rumble!

Maker Faire NYC will be here before you know it… and, it’s a great opportunity for thousands of people to see and interact with all the cool robots you’ve made!

Aren’t able to attend? No problem, you can ship your robot to us - and we’ll take care of the show-and-tell.

Interested in promoting the mission of LMR? Sweet, volunteer for a shift in the booth!

My Repscrap: DC motors and rotary encoders for Z-Axis too?


 I took a few pictures this morning, to give me something to think about while I was at the cottage for the weekend.


Hello guys and girls,I am a new user and would like to gladly greet you all.I am terrible with robots but will improve with the LMR community.This blog entry contains a few ideas I will soon use to create some robots . Idea number one is that my first robot will be a line runner.I have not come up with a design but I know it will be very simple.The whole point of creating the robot is to improve my skills with robotics. My second idea is a navigator robot which will lead to the destination that is pinpointed.

I am a giant!

     Because as you know your height is the same as the distance from  fingertip to fingertip.   And the distance between my fingertips is over nine miles.

     And that means you have to be careful when using butcher knives.

     But don't panic, it was only about mm lost.  But that’s not to say i wasn't attached to that particular mm.

     So before using any kind of cutting tool think of the worst case scenario and don't have your fingers there.

A Military Science Exhibition/Competition - MSTC

Hello there guys. Long time no see. I was wrapped in a US college application season this year so got a bit busy with things. 

A deleted scene from Iron Man 1


I think you guys will appreciate this scene from Iron Man 1. 

SmartRap, build has moved forward

Between job stuff and family priorites, my SmartRap doesn't build by itself.

But little step by little step, I have nice progress :)

The build itself is ready, I started to plug and test things.

This evening, I flashed the Marlin firmware and tested the head servo.

Enough for a tired man todey, hope to continue to plug the rest of the cables soon.

Controlling a Raspberry Pi / Arduino Bot from the Internet Part 3 of 3

This is part three of a three part Series to explain how I control my BotTwo semi-


This is my first robot project.

I am an electronics and computer systems engineer with over 20 years experience.

The Mailman


Long time no see...

I just wanted to share with you something I worked on during the month of January. I particpated in a robot competition here at M.I.T called MASLAB. My robot and team ended up taking 1st place. The details can be found on my website.

I'm sorry that I don't have the time to write a proper robot post about it on LMR.

Learning Electronics Via The J5 Obstacle Avoidance Robot

Hello to the LMR community. This first blog post is basically just an introduction for me and what I am about.


Creating a Picaxe 08M LCD Driver ( 2 wire Driver )

A few weeks back I decided to make another attempt at driving an LCD using picaxe. My first attempt was almost a year ago, however when the $6 LCD failed to display anything I wrote it off as defective.

But after a long night where i found it hard to sleep i stumbled on a  site that should me clearly how to power up and set the contras with backlight on. 15 minutes in and i was hooked. LCD light boxes displayed as i adjusted the contrast using a 1oK pot.

Controlling a Raspberry Pi / Arduino Bot from the Internet Part 2 of 3

This is part two of a three part Series to explain how I control my BotTwo semi-Autonomous Robot from a webpage on the Internet. 

SmartRap received

Here we are: I received all the parts to build my own SmartRap

For the moment, just a quick unboxing:


LMR in Google

I am replying to the message Frits posted on the start page.

I did a qick check about the google presence and there is no sign of disappearance. I am sure it just had a small hickup due the website changing (owner) and/or registration.

As we all want LMR to be the #1 I am also putting links whereever I see fit. Please do the same but do not spam other forums, just place the link where you think it's appropriate.