Let's Make Robots!

Tips & walkthroughs

Controls two bi-directional low power DC motors
Hello LMRians, Ever tried using the pololu tb6612fng dual motor driver? Quite handy if you are thinking of controlling two low powered DC motors. It can handle a … Read more
reads gcode from the serial line, moves stepper motors
I've been playing with the Adafruit Motor Shield v2 for some upcoming projects. I wrote a simple Gcode interpreter. With this you can write commands on the serial … Read more
Robust superstructure which can be relocated to other vehicles
I have written this to assist any other builders out there who have been thinking of using Maker Beam. I decided that I wanted to build a more rugged … Read more
Interfaces Arduino and Bluetooth 4.0 Module
UPDATE: 7/6/14 -- Silkscreen corrections.UPDATE: 6/1/14 BOM CorrectionsUPDATE: 4/2/14 -- Corrected information and linked the new breakout board, v.9.9   Read more
With more and more 3D printers emerging its time to brush up on some 3D cad packages. My preferred software is "Blender" as it is a very flexible and easy to use … Read more
Read RFID tags from the Parallax RFID reader on the Raspi
How to connect the Parallax RFID Serial Reader to the Raspberry Pi safely. Using a Logic Level Converter from SparkFun to step down the 5V serial from the reader … Read more
Breadboard Propeller and programming with Linux and PropGCC
Using a
Writing program in C with propgcc on Ubuntu Linux so you can compile and load the Parallax Propeller with Linux and C rather than Windoze and Spin. The video is … Read more
Determine the distance to a detected object with a single camera and no other sensors
If you have OpenCV code that draws a rectangle around a detected object but want the code to know the distance to the object, no need to add another camera or any … Read more
This tutorial shows you How to get the RSSI of an Xbee using Arduino!
It took so much time to get this working. But know everything works fine. Using RSSI you can make many funny projects, like object detection and so on. Check out … Read more
Explains the simplest method of drawing pictures using the sample code provided.
If you are reading this before 31st of July, 2013 then there is a contest with prizes running. See here for details. Read more
Yet another way of organizing your parts.
First, let's face it-there are any number of ways you could do this. But after years of fighting a mess of resistors in a Plano box and looking up the color codes … Read more
Restores Angstrom in case you kill it (like me)
UPDATE: I discovered the link I had was referring (which is the true stock image) is unuseable unless update and upgrade are run.  Sadly, you can't do that with a … Read more
Raspberry Pi, Camera, Arduino, and Servo tracks face
No longer afeared of frying my Pi, I've moved on to trying to implement some of my bot goals.  Like many, I want my bot to be able to interact with people, but I … Read more
Provides power to Raspberry Peripherals beyond 700ma
As I prepare to start adding peripherals to my Pi Bot, I wanted to be sure to get around the 700ma power budget the Pi has.  After searching for a cheap battery … Read more
Simplifies interface, saves one pin.
Well, I don't believe I have seen this @ LMR so here it goes: Hack your HC-SR04 for use with a single uC pin. Simply add a ~1.8k resistor from echo to trigger, and … Read more
Robot platform from Raspberry Pi and Arduino orchestration
This article is specific: How I personally would setup my Raspberry Pi to act as robot base.  But, I'll be clear, this is one of nth possible setups.  A … Read more
Possibly helps to detect objects, walls and holes.
 Some fancy nice ultrasonic sensors can read multiple echoes of sent ultrasonic wave. Cheap senosrs register the first echo that arrived back. If we could listen … Read more
Allows you to use USBasp on windows 8
Are you having problems installing usbasp drivers on windows 8 ? This walkthrough will guide you to installing those drivers :) Actually the main problem is that … Read more