Let's Make Robots!


The robot moves avoiding obstacles and choosing the best way to follow by ultrasound.
Using a
The programming code is attached here as a .txt file. Download it and paste the text on the Arduino compiler. Remember to add the IRremote library (also attached … Read more

Ultrasonic HC-SR04 library for AtMega 8 (ie Dagu Mini Driver)

Does anyone know of a library that will work with a Dagu Mini Driver (Arduino NG AtMega 8) and an HC-SR04?  At first I thought I must have two sensors that are dead, but when I hook them up to an Arduino they work fine.

I tried our friend Google, but none of the ultrasonic libraries list if they are backwards compatible to the AtMega 8.  I tried two different libraries and neither seems to work.  I tried different pins, still no joy.

Thanks in advance,





Can only get a 6-8 cm range out of HC-SR04

Hi everybody,

I'm working on my first robot project: a simple 2WD wall avoider using an Arduino Uno and the Adafruit motorshield v1 and I have a problem with the HC-SR04 sensor I purchased. Everywhere on the web I find that the maximum range is a couple of meters, however I can only get 6-8 cm's from it. 

My code looks like this:

right now all it does is avoid obstacles, but i hope to program it to have other functions.   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.




Out of the shadows, into the unknown & some questions.

Because I couldn't find an introduction section anywhere and because this is my first post (yes I was that lurker) I'll take the liberty to introduce myself.

I'm a Dutchman, 39 years old and living in the northern part of the Netherlands. I've been fascinated by robotics since my early childhood, but I never got further than buying some toy robot. My nick, for those who wonders, is from a tag on the chest of the eighties Magnatron robot I got as a kid. Since it's written in large letters it has to be something important, but you can call me Paul as well.

Multiple similar distance sensor use for Obstacle Avoidance and Approach

Related to my post this weekend about Robot Size and Methods of Obstacle Avoidance but not limited to larger robots, does anyone's experience with use of multiple distance sensors (either US or IR) support concurrent use or alternatively suggest that the complications caused by their installation, interference with eachother and programming are not worth their addition?

Robot Size and Methods of Obstacle Avoidance

I realize that most LMRians are going to have more experience with smaller robots and that I am in the minority here, but for the few that have similar or greater experience with big boys (or relevant experiences and insights from or in related fields) I wondered if I could see if you've noticed the same trends as I have in terms of larger (greater than 25cm in any dimension) Robs and effectiveness of various kinds of near-surface detection.

calculate routing, find the way and recognition, obstacle avoidance - primarily drive from point A to B ;)
Using a
Here is the brief introduction of my AUROB Isaac: Base is an old electric wheelchair. The whole robot is controlled via a i7-7200M notebook. The latest version I … Read more
PROJECT CONTINUED! So I found a motor from a toy. Works fine. The same speed as the other. But I still have the problem with the whole robot turning. I'll post a … Read more
navigates via ultrasound, controlled by wii nun chuck
Using a
This is a robot that can be controlled by a wii nunchuck, or it can navigate on its own. It avoids cliffs with the ultrasonic sensor on the front arm, and it avoids … Read more
Navigate around via ultrasonic and create a map
Using a
Robotic Operation Unit with Learning envIroment System ( ROULIS ). this is my first Rover 5 Autonomous Robot with PIC 16F887 using mikroC and OSA RTOS.The idea … Read more
Developed for a university sumo bot contest, Push/flip other robots out of the ring
Using a
This Sumo Bot was designed, built, programmed and tested over a 12 week period for one of my final year engineering classes. The aim was to design and build a … Read more
Navigate around via ultrasound
Using a
Hello everyone. My ultrasonic sensors arrived (4 in total) but instead of using them on my scrapbot, i found some 360 degree servos that i had gathering dust from a … Read more
a very basic obstacle detection/avoidance robot
Using a
hi, this is my 1st robot, a very basic obstacle detection/avoidance robot.                       UPDATE 12/06/2013: Read more
Navigates via Ultrasound, annoys the dogs
Using a
2012/12/4-Yay, the video is working!Also, OddBot is right, it is called "BubbleBot" because it is full of air, though I don't know how hot it was.This is the most … Read more

Trying to fill data into an array for the first time.

Let me apologize right up front if I sound stupid here, this is my first adventure into programming and I'm trying to learn.

What I'm trying to do is use an ultrasonic rangefinder attached to a servo to scan the area in front of the robot in a 180 degree arc, and record the distances at each degree in an array.  Then I want to have my bot scan the area over and over, re-looking that 180 degree arc.  When one of the distances changes, that should trigger the bot to fire a laser at the spot where the "intruder" is.

Navigates around via ultrasound, moves turret and fires "Death Ray" at targets
Using a
Update 28 NOV 12: - I've fiddled with the targeting code and now have it written correctly so that the GDR will enter "Sentry Mode", will scan 180 degrees using an … Read more
Navigate around via ultrasound
Using a
This guy is my first real foray into robotics. He's made from an Oscar Meyer Lunchmeat container, some wheels and motors ripped from one of my son's broken RC … Read more
It can easily avoid objects and go around them using the ultrasonic sensors. If the other supported sensors are added it can do many hobby oriented tasks.
Using a
The Rover 5 platform is relatively inexpensive and has great motors with integrated wheel encoders. The whole system is programmed through RobotBASIC communicating … Read more
Roam randomly navigating around obstacles by using ultrasound
Using a
YA2WDNSOSBBALABMHAMF (Yet Another 2WD Not So Original Starter Bot But At Least Assembled By My Own Hands As My First) or just B4short, --- a tale of many horrors, … Read more
wander around the room not hitting things
Using a
Ok...this is my first ever actual project in electronics, programming and mechanical engineering and i decided to make life difficult from the start by making the … Read more
 I made a correction to the program listing. All the program did not seem to be here before. Let's see if it works now... ( The .bas listing appears to be all run … Read more

3x Ultrasonic sensor

Hi I have problem with reading value from 3 ultrasonic sensor. I use Atmega644P and trig is conected to PD5-PD7, but echo from all sensors conected to PD2. I tried read value and wrote to LCD. When I disconnected all sensors the some values are on LCD, but when I connected all sensors and click to reset the LCD is clear.

Navigate around via ultrasound
Using a
This is the third version of Primo. It has ultrasound sensor and bumper. I used my Aperia Arc S like webcam . Read more
navigate in various ways, teach me about robotics
Using a
Hi! MAEP 2.0 is the second version of MAEP (please check it out if you haven't already). I won't go into all the details about things that are the same as the … Read more