Let's Make Robots!

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wrench_orange.png Your work in progress or a finished robot: Robot project
script_edit.png Write in your own blog: Blog entry
comments.png Discussions and questions: Forum topic
brick.png Show what you are making robots of: Component
lightbulb.png Help others with what you have learned: Tip or walk through
link.png Add a good web shop, a guide or a cool link: Web link
Grabbing objects, swinging them around
Using a
This is a delta parallel robot - aimed to be the smallest in the world. I aimed at a height of about 1cm, but during building I found that, with my … Read more
Navigates around via ultrasound, makes :D :) :( :| or :P, tries to catch everything nearby with its gripper
Using a
You can buy German Cheese in Shanghai, sealed in a nice aluminum can. Since a while I toyed already with the idea of doing sth. with these cans. Too good to throw … Read more
Walks forward and backward, turns in place, avoids obstacles.
Using a
This is a simple three-servo hexapod robot using the Pololu Micro Maestro as a controller.  The Micro Maestro allows allows me to sequence gaits and integrate … Read more
Keeps the baby sidetracked
What better way to celebrate the birth of a new family member. I jumped at the chance to make a solarised baby mobile to pacify our new arrival. So here is … Read more
Grab object while tracking them using live video.
Using a
UPDATED!!!!! RoboBOB is designed to track objects using it's vision and when signeled, grab it with it's closest hand.  The initial vision portion has been … Read more
The PICaxe USB cable is just a USB-Serial Converter.  Like a lot of USB-Serial converters, it's based on the FTDI 232 chip.  This means you can use most FTDI … Read more
Make your robot to 2 (or 3, or 4, or 5, or 6, or 7) things at the same time
This is part 0 of a multi-part series.  The other parts are here. Read more
A basic - intermediate walkthrough on programming in Spin
This is part 1 of a multi-part series.  The other parts are here. The Parallax Propeller can be programmed C, Spin, or Assembly; I think most people use Spin.  I … Read more
This is part 2 of a multi-part series.  The other parts are here. Spin is an 'object-oriented lite' programming language.  I like it because it eschews some of … Read more
How to use the Prop to do multiple things at the same time
This is part 3 of a multi-part series.  The other parts are here. Let's imagine a hypothetical 'obstacle avoidance' robot with a set of wheels and a ping … Read more
Peanut Tin of Terror is an autonomous beetleweight (3 lb) combat robot.  He competed in this year's Robogames 2010.  You can read about his development at … Read more
Sometimes you want to make not just one tip, but a complete series. Or colaborate across the site. This is how to do it best.
Sometimes you want to make not just one Tip/Walkthrough, but a series of postings that belong to each other. Or you want to cooperate with others on a subject / … Read more
his head is an LED and turns on only when there is no light !
Not only does he look human , he is also a functioning circuit ! his head is an LED and turns on only when there is no light ! he has got a mind of his Own ! :) … Read more
an example of a driver for a brushless DC motor without microcontroller
This is a continuation of my blog on the same subject. Please continue your commenting here.     I am the proud owner of a stack of scavenged hard drives. I hoped … Read more

Note: You can follow some projects some of the time, but you cannot follow all the projects all the time.




Recently collected


Drive around and shoot BB's
17.04 - Partial encoder success It's alive!(kind of). The movement in the video is a bit slow and jumpy as I am filming with one hand and using two joysticks with … Read more
Recently, I have received a gift mDrawBot kit from  Makeblock. the mDrawBot kit has already&nbs… Read more
Walks down slopes using gravity, makes his owner smile.
Wobbly is a 3D-printed, gravity-powered, walking automaton. He basically walks down slopes. Read more
There are many ways to build a robot, from scratch a kit, a prebuilt system or combination of any of these methods. The path we will take here will be mostly from a … Read more
Hello all, This is my first robot with programming so I would be glad, if you gave me some tips if you find any issues in the code. My robot is based on an AT-AT … Read more
Made a simple robotic one finger piano plinker using two servos, Arduino Uno, some aluminum flashing and a fishing pole for the sliding rails. You get a gold star … Read more
A study on PWM outputs at Tiva C Series TM4C123G Launchpad Evaluation Kit (EK-TM4C123GXL)
After some months form Read more

Problem with HC-SR04 distance sensors

Hi Everyone,

I have been finding that I get erratic distance measurements on my tests with the HC-SR04 sensors. I put together a circuit with 128x64 OLED SSD1306 I2C display (Really like that module, by the way) connected on a breadboard to Arduino Nano v3.

The idea behind the circuit is:

Use the NewPing library to generate a distance measurement in centimeters.

Print the distance value to the screen, and keep on repeating.

As the sensor is moved around (8V lipo battery connected to Vin and Ground) you can see the distance updated on the tiny screen.