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
Navigate Around Via Sharp
Using a
This is my first bot. It is built from the LMR Starter Bundle. I hope to use this as a platform for a more complex bot that will be both autonomous and RF … Read more
This Delta Robot is made from ply wood and aluminium. Cheap servo motors for the positioning. Atmel Attiny2313 for controlling the servos over RS232 with MATLAB. … Read more
This project is pretty simple. It is a atmega 168 with the arduino bootloader running a lottery code i wrote. The lottery code has 6 user chosen lottery numbers … Read more
So this is what me and my friends are up to. We liked to make our airsoft games really intense. This is one of the 3 project we are making in order to enhance are … Read more
Navigate around via ultrasound, makes funny moves and sounds when the obstacle is too close
Using a
UPDATE you can see the stupid moves i was talking about. In the first clip but the quality is not good(taken from my phone). Second video shows it navigating around … Read more
Inter/Intranet controlled robot able to send video/voice/email and play with my kid from the office
Using a
Hi all,  I'm from The Netherlands and have a nice little girl that wants me to build a robot. Well, easier said then done so far. Since I'm an IT consultant I … Read more
  Hi, this is my robot "Rhinoceros." Why Rhino? Because he looks like an animal, such as massive.    Read more
Tool for programing in socket PICAXEs
Some time ago I had an idea of making a PICAXE programming ’clip’ and inspired by the work of TofuRobot http://letsmakerobots.com/node/18926 I built one today. … Read more
This is my first blog entry. My first experience with robotics was helping build a Heathkit Hero 1 back in 1982. Now, I am ready for my second experience! Read more
Blindman`s stick navigate vie ultrasound
Using a
Hi guys, One day I went to work and had an idea. I wanted to get rich. My Idea was that: I´m building a blindmas stick. I wanted patented this idea, but I was too … Read more
Runs fast, measures burnout velocity
The rocket car was build from three RTF model rockets, a cardboard roll, 3 mm stainless steel wire, four 56 mm dia. TAMIYA racing wheels, plastic tubes, a lot of … Read more
Make servo/whatever controller out of Picaxe 28x1 and control it from Arduino over I2C
While working on my first Arduino project I found out that servo library is not compatible with software serial library which is very bad for my project. So, I … Read more
Autonomus bot, navigates around using IR detector. It scouts, it looks, it finds!
Using a
  This is really Scout_bot version 2.0. I added the pan tilt head (Robotshop.ca) later. Anyways it adds some personality. He is built on  an old telephone base … 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).