Let's Make Robots!

Tips & walkthroughs

Information on the Picaxe 28 project board
I was working on my LMR robot and I made this Picaxe 28 information picture for my upcoming robot article. I modified this picture to show the ports and mine has my … Read more
UPDATE: Now with UART(ish)! (3/2/2014)Robot Metallurgy 101: PWMRobot Metallurgy 101: UARTI thought I would journal my work as I begin to venture from the … Read more
Build real-world embedded solutions get and learn how to use a +40 I/O (16 PWM's) microcontroller board for $12, lab-based course.
Using a
Do you want to learn real robotics from inside? (Updated 2015-course)  UPDATE 22-Jan-2015: Course has just started! So today we started the new course 2015. We … Read more
Teaches the basics of PID-based line following, wins you a couple of line following competitions!
UPDATE : (07/10/2014) Added a PDF version of this tutorial and a sample video of a PID based Line Follower. UPDATE : ( 01/16/2014 ) A few updates on making things … Read more
Combines an ATtiny 85 and HM-10 (BLE)
Using a
UPDATE: Added BOM corrections. (Sorry for floating.) Ok. Here's a finished board I've been working on for a bit. In essence, it is a BLE node board.  It combines … Read more
For object avoidance, the ultrasonic or the ir range finders do not always see and object and i often notice my robot running into things and getting stuck. I … Read more
Allows any Arduino board to accept commands from an IR receiver
Most homes these days have at least 1 infrared remote control for controlling the television. These remote controls can also be used to control robots or even to … Read more
The IR compound eye consist of 4 simple analog sensors (up, down, left and right) that can be used to track movement of nearby objects (usually within 15cm … Read more
Most students and hobbyist will use servos at some stage when building a robot. This tutorial uses Arduino sample code but the concepts are the same with any micro … Read more
Displays stuff on a little bitty OLED 128x64
I guess it's been an I2C weekend.  I found these organic light-emitting diode displays (OLED) at Itead studio for $5.   Nifty little buggers. Read more
UPDATE: Added info on making SPI programming jig (makes life a lot easier). UPDATE: Added ATtiny 84 info (though, the post is meant for the ATtiny 85). I've been … Read more
Sometimes the pins you want to use on a microcontroller are this type.
An open collector or open drain are output pins that are made of a transistor with no connection on top. Without external circuitry they can't really be used. What … Read more
This tutorial is an extension of my original tutorial on using motor encoders here: http://letsmakerobots.com/node/38636. This tutorial looks at some code I have … Read more
Make the shoutbox wide, a super productivety killer
Today I did what I'm best at, getting others to work for me. And todays victim were basile. First a little lure: 2013-10-29 09:12:00| |mogul| |@basile you are … Read more
Shows you the basics of using the G+ LMR hangout
Some people are having difficulty joining the G+ LMR hangout so I thought I’d make a quick walkthrough on how to join and use some of the features. Read more
First off I have found no way to get gEDA and PCB to work properly in Windows. RobotGrrl used/uses it on her Apple machine. Read more
Provide precision speed control of motors
This tutorial shows how to connect 2 DC motors with simple encoders to an Arduino for precise speed control and distance measuring. The sample code is written for a … Read more
I've been working on re-making the the Open Hardware Pulse Sensor so it'd be easy to send off to OSHPark and to make at home. I'm not sure, but I think I started … Read more
Gives all directions for two motors
I designed this circuit for those interested in controlling motors that require a lot of Amperage, but have gotten frustrated over trying to create a MOSFET … Read more
Tutorial about how to teach your BoB Biped to walk
Introduction This tutorial show a way to teach your BoB to walk and turn in an interactive process.  For using the Poser software you will need a real BoB biped. … Read more