Let's Make Robots!

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wrench_orange.png Your work in progress or a finished robot: Robot project
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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
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Robot pulls back ball on Newton's Cradle
I got tired of pulling the ball back on my Newton's Cradle so automated it. Three servos, Arduino and chopsticks make for an entertaining Newton's Cradle robot. … Read more
walks on two feed partially dynamically stabilised
over the last eight weeks i had rarely time to work on it but still wanted to share this with my beloved community. i changed the chest to house two batteries and … Read more
Detects boundaries and avoids obstacles with computer vision only
This robot can navigate a room with OpenCV running on an Nvidia Jetson TK1 board and a single Logitech C920 USB camera.  This is a true vision only solution, no … Read more
My boys and I are using an Android phone, solar panel, and a bluetooth relay controller to make an autonomous solar robot boat.  The phone has display, touch … Read more
A brief description about new open free courses online about Robotics, what they offer and what they lack
Last years we are seing new robotics courses online like the Embbeded Systems or Underactuated Robots from MiT. Read more
Testing basic functionalities on the Tiva C LaunchPad board and the Code Composer Studio v6 software
Checking (and finding) a better full software for firmware development for Tiva C boards Read more
Walks with a charming limp
I'm working on a simplified design of my quadruped. The new design should be easy to replicate (with a laser cutter or simple hand tools). Another aspect is that it … Read more
Built this ball bouncing bot from one servo, Arduino Uno, scrap wood, fishing pole, and chop sticks. Was trying to make Claude Shannon's juggling robot but … Read more
Detects an obstacle in front, reverses, turns around then walks the other way.
Hi All, This is my first ever working arduino hexapod. Hardware used: Beetle(Arduino Leonardo)mcu from dfrobot.com 3 x 9g servo from hobbyking 300mah lipo from … Read more
A basic comparison between a new low power microcontroller and an known one produced by the same manufacturer (in progress)
Disclaimer: information stated in this article is for educational purpouses and under review. Not design decisions should be made solely with this information. You … Read more
Learns through pattern recognition, drives very manoeuvrably, calculates best action from success of previous actions.
If you are familiar with the combined work of the late Terry Pratchett and Stephen Baxter, then you will understand why I have called this robot Lobsang. If not, I … Read more
The skeleton of lasi.us... I'm still working on the brain. First approach was a board by basic micro but i seems limited in scaling and adding extentions. Now i am … 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).