Let's Make Robots!

Arduino

It folows
Using a
This is my first bot and made this using two ldr and arduino . Read more
A couple functions:1) Remote Control 2) Autonomous avoidance 3) Autonomous object retrieval (hopefully)
Using a
This is my Service Droid. Meet VADER,  the Very Advanced Droid Exploration Robot. Ok, I admit it, the name is a stretch but it was fun to come up with.  Everyone … Read more

Suggestion arduino Motor Shield with Brakes

 

Hi,

I have built my first robot (ultrasonic sensor, 2 wheels, 2 dc motors) using  he following motor shield(bought from ebay)

New V3 Arduino Driver Motor Controller Shield L298N 2A 2 Motors Module

Unfortunately my robot always bumps into walls. It turned out that I am not able to apply BRAKE.

PID Tutorials for Line Following

Hey there guys. This post is outdated. Visit http://letsmakerobots.com/node/39972 for the updated tutorial.

Hello LMRians,

In this writeup, I will try to create a tutorial for tuning your robot using PID to follow a line. This tutorial won't go deep down into the details of PID and its applications but will just attempt to show how a robot can be tuned with the PID parameters to follow a line.

I'm back guys. This here was intended to draw graphs of equations, but for the sake of ease i made it to just draw, Or may be write(Provided you can control it). If … Read more

12V-30V Arduino Power Supply

So one project that I've been working on lately is a 24V Brushed Motor Controller Shield for Arduino. One of the features that the shield must implement is a power supply capable of power the Arduino with more than 15V, activates the Arduino when the input voltage is greater than 12V, and power any necessary gate driver circuitry. I finished Rev 1 of the power supply and plan to add one more revision to the power supply circuit before designing the reminding parts of the shield. 

Fetch a beacon, Follow Me (beacon), and obstacle avoidance
Using a
Work in progress. I don't know if this will be 2 robots or one yet. My wife got me an OWI Robotic Arm kit and a DFRobot 4wd Chassis for christmas. I picked up … Read more

DYP-ME007 + Wild Thumper Controller

Hi all!

Can you help me?

I'm trying to connect DYP-ME007 (ultrasonic) and Wild Thumper Controller.

And i can't understand how to connect it electrically. I'm talking about trig and echo pins.

Many thanks in advance.

 

BR

Ivan

DIY LED Sign with MAX7219 Dot Matrix Module STM8S003F3 MCU for AVR PIC MSP430 Arduino ARM STM32

To satisfy electronic DIY hobbyists, ICStation has developed MAX7219 Dot Matrix Module. It uses the Max7219 chip which do a great job on saving of MCU I/O. It can not only control each point individually, but also can be extended without limitation to meet your requirements on LED Sign, Team Logo and so on.

drive, torment neighborhood dogs
Using a
This is not a cat toy. My first personal robot after being involved in the FIRST Robotics Competition since 2006, an outdoor robot named Hormes, after the Greek … Read more

Out of the shadows, into the unknown & some questions.

Because I couldn't find an introduction section anywhere and because this is my first post (yes I was that lurker) I'll take the liberty to introduce myself.

I'm a Dutchman, 39 years old and living in the northern part of the Netherlands. I've been fascinated by robotics since my early childhood, but I never got further than buying some toy robot. My nick, for those who wonders, is from a tag on the chest of the eighties Magnatron robot I got as a kid. Since it's written in large letters it has to be something important, but you can call me Paul as well.

Sid, the clumsy housekeeper

You know I bought a Service Droid from Dagu, right? I wrote about assembling the kit here: http://letsmakerobots.com/node/39518

December 15, 2013.

Two Arduino problems fixed in one day! Halelujah!

 I've been procrastinating on two problems that I've not been able to resolve  - or google an answer for in my code.

 

1) Slow response in the Serial.parseInt() function... yes google gave me lots of people with the same problem, but I finally found a reference to  Serial.setTimeout()  ... well what do you know...  I set Serial.setTimeout(50)  in my setup... and low and behold...

  SNAP RESPONSE now!!!!   

 

Face Tracking Using OpenCV and Processing (Error) [SOLVED]

UPDATE: As i said guys, when the face tracking program is launched immediately on start-up, i don't get this error, otherwise i do. Now, the program has launched, without an error, but the display output is totally black. Any suggestions guys?

I also referred to CP's solution to this same problem, ON A LAPTOP, but to no avail. I installed quicktime, and a vdig driver, but no progress till now.


 

Hello guys,

Goes to the brightest light source
Using a
Ok, that is something what sits on my desk for a while and never got finished. Inspired by Yahmez and his The MicRObot Challenge and also one of my Chinese … Read more

C# To Arduino Programming

Good morning LMRian's.

I have purchased my very first Arduino (Uno), and am trying to find a simple "blink" tutorial to use C# (Visual Studio 2012) to the Arduino onboard LED.

Can anyone please recommend any links?

Play music, draw an image, and react via an ultrasonic sensor.
ES100 Group 5 Final Project Instructor: http://letsmakerobots.com/user/20806     Our class project was to construct a robot. The requirements for the robot(as per … Read more
Obstacle avoidance
Using a
My version of obstacle avoidance bot: Made out of: 2 hacked microservo 2 servo - front & head Some 3d printed parts (optional) Meccano parts & some … Read more

Got all the parts... any tips before I start?

Hey all, so I have a simple idea for a robot, hack a hexbug spider and put a Sharp IR sensor on it to make it autonomous.

 

I have:

1 hexbug spider

1 Arduino UNO

1 Seeed Studio motor shield

1 Sharo IR sensor from the SH robot

all the hook ups, solder etc.

 

Heres my question; would it make more sense to hack the existing chip on the spider, or cut it out and just have everything go straight into the Arduino? 

 

If you have any tips or such before I get started, that would be really appreciated!

Using WiFi Bot Control (Android app), you can remotely control the robot and view an IP Camera video stream. I built the app as well.
Using a
Wifi Bot Control is an Android app that allows you to remotely control a robot (or other device) via WiFi. You can also (optional) view a video stream from an IP … Read more

Transistor based H-Bridge

Hello everyone I realised after burning through 6 L293D's that they were getting old. I hated them mostly due to the fact that they were fragile. I also burned 3 of them because of static electricity. So I decided to try and make a cheap H-Bridge from transistors. This is just a test circuit what I need to know is: is the circuit correct, can this type of H-Bridge handle more than 2 Amps depending on the transistors used, and do you guys have any suggested modifications if it is wrong.

This is my second Robot I build. Components so far: Arduino Uno R3 (counterfeit) Arduino Motor shield Tamiya 70097 Twin Motor set Tamiya 70108 Tracked Vehicle … Read more
A problem with having scientific equipment on location over a period of time is the chance of it being stolen. This equipment can be very expensive (not my DIY … Read more
Plot the Brazil's Flag on the Nokia 5110
Playing with my new toys, a sample of its possibilities. Read more

Rotary Platform

Hi All,

I am making an rotary platform for my product photoshoot. i want to take 360' picture of product which i would later use with 123D catch by autodesk  to make an 3d model which i would later use for editing in Cinema4d and finally use it in game development in Unity3D.

 

moving arm with webcam controllable from web.
Using a
A cheap robotic arm based on the OWI arm. 5 potentiometers were added to give it a position feedback,plus one motor controller to control the gripper and motor … Read more