Let's Make Robots!


trouble with nanpy

I have nanpy 0.8 installed on my raspberry pi, it is hooked up sucsessfully to my arduino mega2560.  I cant find a lot of information on usung the servo library or anything else, I was hoping that someone could point me to some example code for servos or give me a quick pointer on using nanpy's servo library

ROB3, my third robot started out using my ROB1 base, as I wanted to play around with the gyro again using a 2 wheeled robot, but alas, one of the servos died. So … Read more

Has anyone ported Bill Porters Easy Transfer for Raspberry PI?

I *REALLY* like Bill Porter's Easy Transfer library for Arduino.  Yes, I've Goo-oo-oo-gled this, but have not found any hits on Easy Transfer (Bill Porter's Easy Transfer, as opposed to that MickeySoft product)  for Raspberry PI.  


I would Love to be able to move a struct { }  from Arduino to Pi, just as easy...

I bought a parallax BOE-bot(the arduino robot shield) but had trouble with the 5v outputs when it went through the board. I modified it with some plates I bought … Read more

HMC6352 Compass Module in Continuous Read Mode

I have a need (desire?) to use compass heading as part of my PID loop to keep my rover heading true.  Using my well established trial and error coding technique, I was unable to get a sufficient sample rate from the HMC6352 Compass module using code I pilfered.. er... borrowed (I plan to give it back!) from the Interwebs.

Another Pro Mini breakout board.

When Bajdi wrote his blog, http://letsmakerobots.com/node/40026 , about his undershield for the Arduino Pro Mini clones I was very interested and excited. This was because over the last few months I have purchased a few (20) of these Pro Mini clones myself. I was elated to see that there might be an easy interface board for my future projects.

12V-220V inverter, 2*680uF capacitors, coil, laser sight, 2servo, 4mm projectile If YOU want more info please write in … Read more
ROB1 was my first prototype robot base, I built a couple years back. His purpose was to get something driving around using a gyro to hold straight line, and … Read more

Arduino Servo library and softwareserial library conflict


I need some help for this.

I am using arduino UNO and i have connected a GPS to softserial and a servo to pin9 and when the software runs the servo and softserial fights. I check online about the issue and it happend to many people and still i am unable to get a solution for. 

I even tried almost all combinations of solution from internet and it did not work. When this happening some times servo works and other times GPS works. 

hope to get some support

Remote controlled telepresence rover
Using a
RalphBot has been in progress for about 3 years now and has gone through several revisions as I have had time to work on him. He started out as a quadruped bot, but … Read more
A Hide-&-Go-Seek robot that will look for any person and then hides in the dark
Using a
UPDATE: 28 Jan 2014 So Vexter is no more or he has been upgraded to point of minimal recognition. This is now Sherlock. He will amusing me and my kids in the … Read more

learning code ... the ups and downs

Thought id post this example to show what im going through in the learning and understanding prossess of coding. For the most part it is very frustrating ... i would have very limited understandig at the moment and practically new to coding have tried before but stopped as other things came up.

But have started again and finding it hard going ... but am having some success ..

Number one reason is not being able to find any site with a teaching process .... have found some great sites that show very good tutorials eg tronixstuff ... 

RC,Obstacle Avoidance,Line Following
Using a
Update 1/3/24 Code and Videos added....Video on the headlights test and automatic obstacle avoidance test. Videos here : http://youtu.be/SZA4--jDd7U … Read more
I am new to building robots and I decided to attempt a project that would be challenging, ultimately I decided this chellenge would best come from a robotic arm. … Read more
Navigation, fetch objects, recognise people
Using a
This is Robbie the Robot http://escaliente-robotics.blogspot.com.au/ The project is a couple of years in the making he is a 2 wheel differential drive robot with … Read more

Attiny 2313/4313 servo driver

Hello everyone!

Attiny85/45s are great for small projects because nearly all pins can be used to drive servos simultaneously.

However 5 servos are nice but not enough. I found out that I have bought some Attiny4313s a while ago. They 20-pin chips that can be programmed via arduino. Now I am wondering how many servos it can control. There already are different approaches:


Explorer robot with camera 1/3 inch and pan-tilt controled by radio control
Using a
***Project completely rewritten*** Version of January 28   0 - ONCE UPON A TIME... (A BRIEF HISTORY) This is my first project, a explorer rover with robotic claw … Read more
It folows
Using a
This is my first bot and made this using two ldr and arduino . Read more
A couple functions:1) Remote Control 2) Autonomous avoidance 3) Autonomous object retrieval (hopefully)
Using a
This is my Service Droid. Meet VADER,  the Very Advanced Droid Exploration Robot. Ok, I admit it, the name is a stretch but it was fun to come up with.  Everyone … Read more

Suggestion arduino Motor Shield with Brakes



I have built my first robot (ultrasonic sensor, 2 wheels, 2 dc motors) using  he following motor shield(bought from ebay)

New V3 Arduino Driver Motor Controller Shield L298N 2A 2 Motors Module

Unfortunately my robot always bumps into walls. It turned out that I am not able to apply BRAKE.

PID Tutorials for Line Following

Hey there guys. This post is outdated. Visit http://letsmakerobots.com/node/39972 for the updated tutorial.

Hello LMRians,

In this writeup, I will try to create a tutorial for tuning your robot using PID to follow a line. This tutorial won't go deep down into the details of PID and its applications but will just attempt to show how a robot can be tuned with the PID parameters to follow a line.

I'm back guys. This here was intended to draw graphs of equations, but for the sake of ease i made it to just draw, Or may be write(Provided you can control it). If … Read more

12V-30V Arduino Power Supply

So one project that I've been working on lately is a 24V Brushed Motor Controller Shield for Arduino. One of the features that the shield must implement is a power supply capable of power the Arduino with more than 15V, activates the Arduino when the input voltage is greater than 12V, and power any necessary gate driver circuitry. I finished Rev 1 of the power supply and plan to add one more revision to the power supply circuit before designing the reminding parts of the shield. 

Fetch a beacon, Follow Me (beacon), and obstacle avoidance
Using a
Work in progress. I don't know if this will be 2 robots or one yet. My wife got me an OWI Robotic Arm kit and a DFRobot 4wd Chassis for christmas. I picked up … Read more

DYP-ME007 + Wild Thumper Controller

Hi all!

Can you help me?

I'm trying to connect DYP-ME007 (ultrasonic) and Wild Thumper Controller.

And i can't understand how to connect it electrically. I'm talking about trig and echo pins.

Many thanks in advance.