Let's Make Robots!
Price: $109 USD

 Collected by one member
This robot controller is by far the most powerful Orangutan, and it is intended for small and medium-sized robots. The design features a dual-AVR architecture that … Read more

A stumbling bumbling attempt at a 3D printer

Well this is my attempt a building a 3d printer, I am blaming TinHead for the whole thing, perhaps with some blame beeing focused on CtC as well and let me state here Chris and Tinhead were both a great source of encouragement and help in this on going project. The whole journey started with my seeing Tinheads build of bumble bee  http://letsmakerobots.com/node/32879

Price: $15.95 USD

 Collected by one member
This gearmotor is a miniature (0.94" x 0.39" x 0.47"), low-current brushed DC motor with 100:1 metal gearbox, similar to Sanyo’s popular … Read more

Check out my hobby electronics business - low cost electronics & robotics components

Hi everyone,

I'm a college student in the U.S. and recently started a small hobby electronics business. It's been a dream of mine for a long time and I'm excited to finally get it started! My goal is to provide students and hobbyists with low cost electronics and robotics components and kits, as well as electronics and programming tutorials.

My website is www.foxytronics.com and I created a 10% discount code for LMR if anyone is interested: LetsMakeRobots10%!

As a total moron, I've deleted the previous robot page while trying to clean some attachments   So, let's start again.. Steve the disembodied robotic arm as been a … Read more
I've found this multifunction chip on ebay,  the official webpage is http://www.web4robot.com/ I've just bought a pair, I'll come back to post with my … Read more

Boosting Speakers with the Lm386

Hey All,

So I'm integrating the SpeakJet into my next project, and using the LM386 to try to boost the speakers. Unfortunately, the package didn't include any circuit (or information whatsoever, really) and Radio Shack has discontinued their databooks. So I went to the go-to info tool, THE GOOGLE! I've seen this circuit all over the place:

lm386_0.gif

A few questions about this circuit:

1. Is the .05uf cap and 10 resistor recessary if it's just going to ground?

? Sending Serial Via IR?

So I read Frits's post about his little "data-in, data-out" RF doo-dads and it got me to thinkin'...

Price: $39.95 USD

 Collected by one member
This discrete MOSFET H-bridge motor driver enables bidirectional control of one high-power DC brushed motor. The little 1.3×0.8-inch board supports a wide 5.5 … Read more

RC bot!

Hey every one! i guess this video will be of help to people who want to make a radio controlled car. i wont be able to make one but heres the video of the model!

https://www.youtube.com/watch?v=sWmPwt5x2bc

BoB the Biped and Me: Tested, approved, and waiting for Rev. B PCBs. First vid with chickenparmi's sweet LMR bumper :D

BoB's edge detectors worked fine at home but in his operating environment at a bar he was failing miserably. There were many false edge detections while walking over safe ground. The high gloss surface of the bar was reflecting light under his feet during even the slightest wobble when he put down his feet (the point where the edge sensors were read). This led to him backing up into hazards I was trying to avoid.

Grab objects, navigates via user input
Using a
My first claw robot. Found the first version claw from SparkFun in a box - totally forgot I ordered one over a year ago. After a long process of dealing with how … Read more

L298N + picaxe28x1 (axe020) could work?

hello.

recently i found that the problem with my project is that the motor consumes more than 1 amper (with no load),

because i tried using the L293D it didnt really work well (that's an understatement).

since i would really like to save the trouble of building my own high current H-bridge, i thought the L298N can do the job.

so after measuring i found out that the motor consumes:

1.5 amper with no load.

2-2.5 with the nominal load.