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
This is part III of a series I call “How to build your first robot”.     This part is not so much instructions of how to build & program, that was in Part … Read more
This is Part II of How to build your first robot - tutorial. you can just take the cool navigation-code in here and have fun with it, or you can follow the whole … Read more
Navigate around via micro switch
Using a
hello to all this is my first robot ,it s a simple robot to start my work he searches environment and detects obstacles(with micro switches)and finds the best … Read more
    This is the first robot I have ever made. I have been on this web site for a while, waiting to order parts and start building. Well, here it is!!! This … Read more
This is just a simple firefly that I built with some stuff I had lying around. It uses a tricolor led, 3 lr44 1.5v batteries, an attiny13 and some other … Read more
I have built a couple of rudimentary 2-wheeled rovers before, nothing special, but I really fancied trying a hexapod.  So here it is/will be.  It will be an … Read more
this is my home made omniwheel , it`s very very easy and cheap to make one ,and i`ll show you the parts and the steps to make it … Read more
I want to share my robot with you. it was made in 2006.Its name is TERMIT The TERMIT is a mine searching and exploratory robot and is studied with solar energy.It's … Read more
Has the potential to be a slave-master to any of my projects.
Using a
This remote represents my journey from knowing absolutley nothing about RF communications, to a little bit. Built from scratch, the remote runs off a PICAXE 28X2 … Read more
Navigates around via ultrasound without falling using LED and LDR, Follows lines.
Using a
This is my first homemade robot. It is inspired on the Start Here Robot and Amanda LDR. Changes: Read more
navigate around, make sounds, communicate with other 'bots, flash lights
Using a
crawling like a baby
this is my new robot ,it`s a baby ,it`s crawling  ,it`s very simple ,just a servo motor ,some metal parts ,and some creation ,i took this idea from AndyGadget in … Read more
Changes his facial expression according to brightness
Using a
No, wrong thought --- it's not a Jack O'Lantern robot. Mr. Sunsmile changes his facial expression according to the brightness of the ambient light. A LDR is hidden … Read more
This is my first robot R1. It's made from MERKUR. Behavior drive the uprocessor Picaxe 28X1 and program write in Basic. He autonomous ride and avoids the subject. … Read more

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




Recently collected


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.

Help with power circuitry

Ok so followng the advice in this thread and from these forums I have now bought a 7.4v and an 11.1v Turnigy LiPo rechargeable batteries (different voltages to be used in different applications).