Let's Make Robots!

DC Motor Guidelines?

Hello All,

I am building an autonomous vaccum cleaner robot.  I am using an existing cordless vaccuum as the base (why reinvent the wheel?) and putting powered wheels and a brain on it.

I am looking for guidelines as to how to spec motors for this (and other) projects.  One wouldn't think it should not bring about so much thought, but here it is.  Although there is a distinct possibility I am overthinking this.

Atmel RF ATmegas


Has anyone attempted using these? I was wondering how hard it would be to use them with the arduino bootloader for my as-yet-not-started RC system project (I will get round to it soon, hopefully). The Zigduino seems to use them, and they've supplied a library to operate the in-built radio. I'm just wondering whether I'd have to be careful with PCB layout etc. to avoid interference.

It jumps in and scares you......
Using a
No,this is not a Walker....it's......ummmm....a hanger.... So,I was thinking if I should or should not add a write-up,since it is not a true robot in the perfect … Read more
I have started my work on my second robot - Wi-Rover. the idea as i said while concluding my first robot is to have one that can roam around on itself avoiding … Read more
Plays Tic Tac Toe, Participates in Oddbot's Naughts and Crosses challenge
Using a
UPDATED 2/28/13 Before you read this, please read the post on my other Tic Tac Toe playing robot: The Ttp Project at: http://letsmakerobots.com/node/36073 Read more

Making a list and checking it twice...

I am ready to place the order(s) for my parts for my first bot, however do to the overall total, which is right around $130 USD I will be doing it in two parts, off of two different paychecks.

 I figured a good way to go would be to get the most expensive order out of the way, which is the one with the PICAXE starter kit, so I could start programming with some LEDs and such and such that I can pick up for cheap at Radio Shack.  However I have a few questions to make sure I have everything right.


So, here's my list that I am getting from Sparkfun

How to turn a male to male jumper into male to female jumper .
What we need is a really small diameter heat shrink a lighter and a male to male jumper wire. Just follow the photos below and you will understand ,any question can … Read more
Avoid objects and never stop
Using a
Hello! Finally posted something... But yeah: This is my 6th robot, and it is my version of SHR! It runs on Picaxe 14M, and uses 2 modified micro servos to … Read more
Been playing with my new servos and servo controller, now I just need to find my sisters dog........     go here if the video doesn't … Read more

Low-power remote power-independent (solar charged) sensor node!

Well, for a while now I've been entertaining the idea of building a remote sensor node to keep track/record of my indoors "balcony orchard".

This project here will be my starting point, a Low-Power Wireless Sensor Node where most of the work is already cut out for me.

It's power consumptions are reported to be:

Sleep Consumption 0.14 mA

My first  fully working microcontroller project, just in time for halloween. I got the idea from evil mad scientist labs and then saw BOA's haloween bot challenge, … Read more
Navigate around avoiding obstacle via IR eye.
Using a
Hello every one Today I show you my work, from the early beginnings until now (It won't be long). (I'll try to be respectful of the english Grammar but i'am not … Read more

RoboGames Sumo

I'm still very new to robotics, and there's no way I could just build a sumo robot right now.

But when I said I wanted to run a marathon a couple years ago, I wasn't a runner, and I just worked my way there slowly but surely, and finished the race.  Moral of the story; I'm much more motivated if I have goals.

Discussion of object recognition with distance sensors

I would just like to open the floor to any thoughts on the code would take for a robot to do a sweep with a distance sensor and get an idea of what it was looking at overall. We have seen object recognition (edge finding) a couple different ways and code to send a bot to open areas. What I am wondering now is about checking distances at different points of the sweep and (here's the important thing) to figure out what it is looking at.