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
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lightbulb.png Help others with what you have learned: Tip or walk through
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Precision control of 2 DC brushed motors using encoders
Perhaps the most common part needed to build a robot is a motor controller and usually the first complaint from beginers is that the robot does not travel in a … Read more
STILL WIP! Goal: Drive a Hexbug Spider using either an Attiny 85 or Attiny 2313 as a brain - also try to make it look cool. Read more
 I made a correction to the program listing. All the program did not seem to be here before. Let's see if it works now... ( The .bas listing appears to be all run … Read more
  The arduino been having all the fun with those  cheap ultrasonic sensor, time the PICAXE had some. The sensor requires 5V anything less and the sensor becomes a … Read more
Walk around and goes backwards in curves if it detects an obstacle.
Using a
UPDATE NOVEMBER 29, 2013: He made it. The Insect Bot Mini is now available in DFRobot.  Get your own Insect Bot Mini kit for … Read more
Expresses emotions, solves problems, artificial consciousness
Virtual robot girl will have human like skills. Human like skills means simply, she will be able to learn like a human, she will be able to express emotions like a … Read more
Open hardware/software wifi module runs uIP TCP/IP stack. It has UART,SPI interfaces,GPIO x5 and PWM for intelligent control,but fingertip-sized only
Update: please, be careful as this review is based in a device that was updated from the manufacturer.  Would you like to command over wifi out of the box from you … Read more
Walks around the house, disguises as a vase, hunts flies.
Sentiens Mundus is the advanced autonomous hexapod walker that might actually be able to fight off the tame cats if it didn't move around so darn gracefully. Its … Read more
Kossel 3D printer inspired pick-n-place robot. no particular purpose yet. As the name implies, every measure is more or less eyeballed. Nothing is precise in this … Read more
ok so this is the stalled K9 mark Pom, I have a Cubie Truck3 for the main brain so I can run the ROS on it. and that is where it stalled lol I have 4 vex omni … Read more
Navigate under remote control or automomously.
Prompted by Bajdi's and Mikronaut's hexapod builds, I decided to purchase one of the many inexpensive hexapod kits. Apparently I was one of the fortunate ones and … Read more
General InformationNon Pneumatic Tire / Airless Tire (actually just the wheel), matching tire and hub attachment (for printing the wheel without supports) Some … Read more
Herman is an off-road (Kind of), obstacle avoidance robot using an Arduino Uno. He is based around a plywood chassis and uses balsa and some hard wood in his … Read more
Zumy! This is a project to keep me sane through the monotony of school. It all started with a Pi. A while back I made an attempt at building a wifi connected robot … Read more
22 Jan 2015 Update: Web Interface Control: Graphic Design (completed) Link to Blog Post Notice: I jumped ahead to Phase 9 and will finish it to establish web … 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).