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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Uses sensors to follow a line path
This Instructable shows the step by step instructions for building a cool little line following robot using the ActoBitty from Actobotics and an Arduino. Read more
Captures sunlight and then powers a clock hand that never reaches the next hour.
I decided to make another desk ornament since the Annoy-o-tron 2000 was such a big hit. (it actually got stolen by my friend's boss... that's good. He is british … Read more
A very capable Robot, that can be remote controlled or rely on numerous sensors to be autonomous.
Using a
Autonomous Security Rover              by Arthur Gabanyi http://modern-robotics.com/ Read more
Well this seems to be an opportunity to good to be missed! A friend of mine was throwing out (THROWING OUT!!) the aforementioned CNC router. Well he wasnt, his … Read more
The robot is controlled Bluetooth.al wrote a phone application. Read more
Hello Robot Community, I have been working with RC for over thirty years and have been involved in unmanned aerial and ground systems since around 2006. They have … Read more
A simple Linux-based robot platform to learn about AI and ML
Updates Feb 15th '14 Read more
Slightly modified "Start Here" bot. Non-cosmetic differences include laser pointer attached near sensor, and a 2 DOF neck which gives it a rudimentary edge … Read more
Navigate around cleaning the floor
  Meet Molly... She is a automatic wet swiffer.. She works in conjunction with my commercial roomba that I love..   I wanted a simple robot that would pick up … Read more
Hexapod Hexer was originally conceived as a simple and cheap robot(price $ 100) that does not require additional modules and blocks. The whole brain was collected … Read more
hello  my project is small quadcopter using 8 small coreless motors  without ESC  motors … Read more
Usually I am a peaceful person, but sometimes you have to defend your desktop. So I made the nano turret. Powered by a arduino nano (clone). It uses 2 mini … Read more
A mix of toy gun / universal remote
^^ arduino source code   This is an other modified Toy. I added an arduino to an old lasertag gun. First I removed some parts to make the gun a little less … Read more
This is my snow plow bot. It is currently RC but I want to convert it to wireless for internet control.Weighs about 200 pounds. Some Specs: Read more
This is a copy of the "spidy" robot that was published on LMR last Noverber by myblack60impala. Components:   Sparkfun ProMini   2 DFRobot Spiders   … 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).