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
I have been working a lot lately in color detection and recognition. My RoboServant robot and also RoboTank both use a similar piece of software. RobotTank uses a … Read more
This project started off like many the desire to build and the curiosity to see if it would work. Thanks to both the desire to build and the curiosity the project … Read more
  Hello, As the rules to this site state, “Write the best English you can.” I have prepared this article as such and can only hold on to the desire it’s up … Read more
Carry's on conversation and learns from what you type or say.
This project I have working on for about 3 years not continiously but just here and there when I felt like it. It understands speech and learns from you as you … Read more
Part of my C journal -- Writing an LPC1114 bootloader   Setting Up the GCC Compiler I setup a C environment as basic I could.  There may be easier ways to go … Read more
Navigate around avoiding obstacles with ultrasound sensor or remote controlled.
  Dum.bot Read more
Tracks movement, Crawls about either autonomously or controlled by TV remote.
Before I moved to China and started working for DAGU I built a caterpillar robot made from Polymorph (shapeloc). I had wanted to make something different that did … Read more
An RC car with aluminum foil on the front. This guy uses capacitance to find out where things are, though it still needs some work. Most of the work was done by a … Read more
Flips a double hourglass every 3 minutes
I made this little silly build because I got my hands on a business gift at work. It's a double hourglass where one glass is regular but the other side lacks the … Read more
Using artificial intelligence to identify a disease by its symptoms
Update March 15, 2015: My medical tricorder project is now a Hackaday Prize 2015 entry 1. Introduction Read more
This is a project still in the works, below is a list of current features. T'Rex track chassis T'Rex motor controller Pixhawk autopilot Odroid SBC 3DR GPS - will … Read more
Looks for a blue colored sign, reads it and act upon
I was asked to start a blog. Don�t expect anything else than beginners level! A couple of months ago I bought a Raspberry Pi out of curiosity and soon after that … Read more
Tiny hand prototype for grabbing small objects
Few years ago, I made an intership in which one I had to improve the body of a Bioloid robot in order to participate to a competition. In this competion, the robot … Read more
The original BoB the bipded robot.  This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.     8/26/13- … Read more
Drives around, Scans the environment, gets data, logs it and transmits it wirelessly
This is a robot project that i had been putting off for quite some time now and i thought i'd give it a crack. I started this in January and i had a summer semester … Read more

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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).