Let's Make Robots!
Navigates arround controlled by other computer
Using a
Hi, This is my newest project. It is basically formed by two 28x1that are serial controlled by a processing application, one for the motors and other for the two … Read more
it moves a webcam up and down and right and left.
Well i made this one for a friend . He has a laptop with a broken display but the embedded webcam works fine so he asked me to build a pan-tilt mechanism for this … Read more

Optical Encoder giving variety of results

Hello,
I have a QRB 1114 and have done a little experimenting with electrical tape on my wheels.  I "thought" that I had this working before in a different setup, but maybe it was not working "correctly" before.

CtC First Square Drawn with Little Bot

Yup, my "little bot" is up and running and has drawn his first square.  I am quite happy with the encoders and the absolute centering of the pen. I do think I need to do a bit more balancing of the motors (during the straight runs) and a bit more tidying up in general, but we are on the right track. Next on the list is to get my new lipo's installed (when they get here from China) and a servo to "pen-up" and "pen-down". From there, I would like to write a Processing program to allow me to draw a picture on the screen and send it off to the robot to draw.

 

Cool resistors

As featured on the liveshow, now in ultra high res. A 3 digit adjustable resistor. 10 kOhm potmeter. It's name and number are easy to find online: Bourns 3683s-1.

Explores via Ultrasound, plays "Zelda's Lullaby" when stuck
Using a
    This is my first robot.  I started fiddling with microchips as a break from high level programming.  I like feeling more in touch with the low level … Read more
Navigate around via sharp IR
Using a
I got the parts yesterday and i done building it already :) Read more

FIXED: irin resets servo?

I've attached an IR receiver to a servo to use as an IR beacon detector. I'm trying to have the servo sweep through its travel to look for an infrared signal using the "irin" command on a 28X2. I want it to start the servo all the way to the right and pause for an IR signal check. If no signal then increment to the left a little bit, look for IR signal, if no signal, blah blah blah...

My (original) code snippet:


let servo_pos = 70

his  is a non-contact distance measurement module, which is also compatible with electronic brick. It’s designed for easy modular project usage with industrial … Read more

Hello! I'm new here

 

Hi there. I have seen a few videos from this website. I've even been told a few time to sign up, so here I am! :) Glad to meet you all! Lots of fun projects on here. I've been looking through the Robots and Blog area, some real neat stuff.

I'm a robot builder also, sorta, kinda. I spit out new ones often, so I may not have time to post them in the Robots section. But I really like the active forum here! I'll probably be around often. 

Here's a few links to some of my robots if you're interested:

Microcontroller UPS

I have the following problem.
I’m rebuilding my SEA RENDERING http://letsmakerobots.com/node/21098 project from two Arduinos to one FEZ Panda running .NET
In my original setup I had one switch for the main power and one for stopping the logging. The reason for this is that if one shuts down power when the system is writing to the SD card, you might end up with a corrupt log file or in the worst case a completely ruined SD card. In an attempt to remedy this I made the following circuit that worked great on the breadboard.

So I'm new to LMR, and this is my first robot. For now, it's just an Arduino Uno, a motor driver circuit, and two motors. The motor driver circuit I got from here: … Read more

Gakken interview - for the record

Dear Rik,

Thank you again for cooperating in our magazine.
(And also for introducing about us in your blog too!)

Following is the questionarie that I want you to ask about your Theo Jansen style robot leg.

Scaling down a boat to make USV

I have been dealing with asects of theis for a while and this is my latest idea. Build a small plywood boat downsized to be a platform for robotics testing. I bought a "partially built kit" on eBay that turned out to be an abandoned upgrade of a hobby grade boat. It's a 15" V narrow plastic V-Hull and I am concerned about it being to close to max with a decent battery and gear in it. But the upgrade in process inculded a good servo steered rudder and through hull prop hardware. The supplied motor is marginal but workable. I have a brushed ESC with 5v BEC.

Looking for a micro USB connector to connect to your project? This'll do it! Read more