Let's Make Robots!

Latest collected post on LMR

Sad story about Chopstick Junior and Campus Party Berlin 2012

Well, let me begin with an introduction of the robot and the event but you need to promise me to read it to the end...or just the end if you don't have time.

Kossel 3D printer inspired pick-n-place robot. no particular purpose yet. As the name implies, every measure is more or less eyeballed. Nothing is precise in this … Read more
Herman is an off-road (Kind of), obstacle avoidance robot using an Arduino Uno. He is based around a plywood chassis and uses balsa and some hard wood in his … Read more
A rover with 4 directional wheels.
Andromina robot v.1.2 is a 4WD robotic platform with four directional wheels. The four wheels can independently turn. The robot can maneuver multiple ways. The … Read more
Sharing my work in progress on an autonomous "search and rescue" robot. The ambition is to create a robot which explores my living room starting at a random … Read more

Kirchoffs Voltage Law and Current Law - is there easier math for this?

I think I understand the simple examples for this law, thought the math (algebra) is a bit daunting as its been many many years since high school, and I wasn't very good at it then. The more complex examples make me dizzy.  I have to believe there is an easier way to understand and use this law in my robots circuits. Or is this something that I will rarely use? Is there an easy "rule of thumb"?

Here is an example from the class, not even terribly complex, but seems that way for me.

Robots can be made out of anything... can't they? Mopsey is a friendly bot' made from craft fur and a few electronics - designed for simple interaction. Very … Read more
Expresses emotions, solves problems, artificial consciousness
Virtual robot girl will have human like skills. Human like skills means simply, she will be able to learn like a human, she will be able to express emotions like a … Read more
  This is my first raspberry pi project ever. So I am already quite happy with the results. About the robot: It's a modified RC toy (about 0.5m tall). Beside … Read more

Building strapping

Im not sure what it's called, CTC can you enlighten me? But it's cheap and easy to work with. I've used it on Retro bot for the extra battery holder http://letsmakerobots.com/node/8004 You should be able to get it from you local building supplies store. Easy to bend, and cut it with tin snips.

strap.jpgstrap2.jpgretrostrap.jpg 

Cuts parts in wood, plastic, aluminium
                        I always wanted to be able to do my own parts. So I tought it what time for me to do my own 3 axis CNC :) I wanted to share in … Read more

BoB Jr.

Starting a BoB project after seeing Deshipu's μBoB.

STL Viewer (beta)

Model:
Rotate: |
Based on Raspberry Pi Model A+, moving autonomously, obstacle avoiding, line following, Braitenberg vehicle
Short description: PiBot-A is a small, autonomous robot based on Raspberry Pi Model A+. Varying sensors can be mounted on its front to implement different … Read more

The Parallella Board?

I was wondering what people think of this board and the supercomputer that this guy built with them.

The Board:

https://www.parallella.org/board/

This guy built his own supercomputer with 8 of them (each with 18 cores) wrapped around a gigabit switch and a couple of Intel I3 NUCs.

The Supercomputer:

https://www.parallella.org/2014/06/03/my-name-is-brian-and-i-build-supercomputers-in-my-spare-time/

Personal assistant robot

Hi all,

I have plans for a robot for a college project: in short, this is a personal assistant robot. It should be able to use Wolfram Alpha (just like Anna) to get information on spoken search terms (I.E. voice recognition) and output them using text-to-speech. This is all for now, as I want to have a working base that I can develop of my own accord. 

Animabot is a hexapod robot created to interact with humans. Talking, playing, home surveillance, remote control, etc...   Read more
only basic bipedal walking and getting up movements
EDIT: The robot walks more or less properly now, as you can see in the new youtube videos. Read more
Hopefully pulls me round the track :)
Lumi requested that I post about this ongoing project of mine.  I am currently about half way through builing a working 3 1/2" gauge live steam locomotive.  This … Read more
transfer power from one circuit to the other and technically it is just a "AIR CORE TRANSFORMER"  just Drive the coil(primary or transmitter coil or excitation … Read more

Tha $0.99 shipped list

This is a list of cheap, $0.99 shipped parts when you find something share it! If its just a screaming good deal under $5.00 please post as well, the idea is build your inventory $5.00 a week or a pop at least.

Mogul: lcd driver

http://tinyurl.com/nq4so7m

jinx 4 aa battery holder

http://tinyurl.com/kb4eabw

oss BC547 transistors

http://tinyurl.com/nre2woc

jinx 100K resistors, shipping is $2.00 varies for basket

http://tinyurl.com/kpfqj2r

UPDATE: August 10th, 2014 I printed a body and added BLE.  I'll explain tomorrow after I get some rest, but the BLE was to allow me to test directed locomotion. … Read more
I've been viewing Jaidyn Edwards (ChickenParmi) robot 'PopPet and it has inspired me to create Berty. Berty will be powered by 2 Li-Po batteries and 2 constant … Read more
uses ultrasound to navigate around obstacles
Using a
I came across the instructions to build this in a magazine and found it a great entry into robotics. It is working well but I'm still fine-tuning the programming. I … Read more

How to build a delta 3d printer?

Dear: LMR

Hello LMR it is me Noah again. You should know for the past few weeks I have been trying to make a 3d printer. I have given up on my original designs. You see I had an idea for a 3d printer that was too diffucult for me to build which was a soft robot arm 3d printer but it was a failure. Now I have decided to build a delta 3d printer and this is what I am trying to ask you.

Zumy! This is a project to keep me sane through the monotony of school. It all started with a Pi. A while back I made an attempt at building a wifi connected robot … Read more

Raspberry Pi offline Speech recognition?

I know a lot of the Speech controlled robots use the google api.

But I'd like a offline solution. It just has to listen for some key words like "time","temperature", ...

Would be great if someone could point me in the right direction....

Navigate around via ultrasound / react to light and ir signals
This is my first upload here: It's a small weekend project. I added a arduino like board and some sensors to a hexbug spider toy This robot has an us sensor, 2 … Read more
Transfers electricity without cable from the source to the load
Well, that is really nothing what's worth to mention since there are millions of already done projects like this one on youtube and other channels. However, I am … Read more