Let's Make Robots!

Arduino

Problem with hexapod

Hi, I'm new here and I'm not so used to forums so if I'll make mistakes posting, writing etc please forgive me and help me to find the way! :)

I also have to say that I'm not English so forgive me for my English or if I can't get something!

So... Let's talk about my problem..

This project is my very first robot project. It has a cybot foot base with 2 DC-motors and 1 wheel in front. I use an Arduino processor as his "brain". For now my … Read more

Should Arduino based robot kits have the Arduino built in?

Now that I'm learning Arduino I've developed 3 Arduino robot kits. The first was fairly big and can take the Arduino Mega, Duemilanove or Nano. The second two have had the Arduino built directly onto the PCB so that little or no jumper wires are needed.

Which is better? The additional cost of the Arduino built in is less than buying an Arduino board and with all the basic wiring done it is much easier for those new to electronics.

This is not the first robot I have built. I built it one weekend when I was unable to use my computer (so I was bored), and just using parts I had at my … Read more

Swiss Milka Cow "Colour Match System"

Swiss Milka Cow project takes on some colour.

Firstly :- New body made (old one to flimsy) and also replaced motors again .....now with 10,000 rpm racing set (its an easy mod to do on all the GM motor range - just have to be careful not to strip the gears.....) - also IR remote installed and an Arduino Mega as brain.

I have removed the old bi-colour eyes and replaced with high intensity RGB ones instead.

Also i have installed a RGB led into the lower Jaw bone and along side an LDR to detect the reflected colour.

V3 - Borg it is!

Hi all!

Here is quick rendering on how V3 will lokk like :) Almost finished the design, still little things to take care of, I can start cutting soon.

 

Has a Borg feeling to it :D 

 


Update - Z-axis

Or how to get from this:

 

 

 

 

 

 

 

 

Hey guys, Figured I'd share some of my more recent work; Dragoon. This is an RX-64 based quadruped robot using an ArbotiX Robocontroller and the new & … Read more
Navigate arround using 2 IR Leds and an IR receptor
Using a
This is PJBot version 3. The brain of this Bug is an Arduino. Now, it only go rolling and  avoiding obstacles that it detects with 2 led's and 1 IR receptor. Read more

Components to put bw 3.3v signal and 5v

I have an Arm based platform with Serial UART interface but in 3.3v level.

I want it to communicate with my Arduino.

I have a 3.3v power source in the Arduino(Dumilinove).

My question is what components to put between the 3.3v platform RX/TX and the Arduino RX/TX ?

From Picaxe to Arduino

When I joined LMR I had just written my first picaxe program. After 16 months I have finally crossed over to Arduino. The biggest problem I found was that all the commands were not in one neat package like the picaxe manuals (Manual 2 in particular).

“The Crawler” is my first indoor robot with a range sensor. In hindsight I can see that I probably should have gone with motors and wheels, but I wanted to … Read more
Allows to build basic robots with arduino very easily
I wanted a single sided motor shield which would allow me to control a few servos and 2 DC Motors. All this while allowing easy sensor interfacing. The shield had … Read more

Why the need for pulldown resistors in some cases and not others? TeleFox?[solved I guess... mystery remains though]

Hi all,

This may be stupid but I need to understand.

The problem:

We have two microcontrollers:

1 Arduino based on ATMega168

1 ATTiny2313. 

Link three pins of your choice between them, for example

Arduino                     Tiny

9                 -            PB5

10                            PB7

11                            PD3

We want the tiny to respond to low/high states on the Arduino pins.

Navigate around via ultrasound, detects light sources
Using a
This is my first attempt on building an 'arty' bot. I didn't know before I started, that this would be the most time instensive robot I 've ever build. But I've … Read more
pull things with intelligent traction control
Using a
What will it do? - Try to pull a heavy object for a given time or distance - RC with driving aid (Hybrid) Read more

The perfect recipe

Some say I know all about computers... Some say I love my hardware more than my girlfriend... All i know is that my desk is always filled with laptops with different OSes, wires, bare PCB's, components and an arduino. That sounds like the perfect recipe for a robot!

Simple Audio Preamp

i found an easy to make audio preamp that i intend to use to measure a sound with an ADC input on my arduino. i want my robot to respond to me clapping and start a drumming sequence. I may have to use some aditional circuitry to turn the output to a simple high pulse when the sound goes above a certain level, this way i can use one of the arduino interrupt pins to start the sequence at any time. heres the link:

 http://www.reconnsworld.com/forum/read.php?9,10

here is someone who has used it with an avr chip

giving life to dead rc vehicles

I’ve found this two rc vehicles on a junk, they are in a very bad condition. The big one has the DC motor burned out, I will try to replace it.. brushless motor maybe.

4354576505_339d4cde32.jpg

They both have two different gear mode (hi and low speed), I am wishing to try it out.

4354590289_f76a2175dd.jpg

This is the dead motor..

Manual compile and upload

We decided to get rid of the Arduino IDE for our project, and switch to make/avr-gcc/avrdude. Sure, the IDE is great for beginners and those who write small to medium-small projects, but it's awkward to use with larger projects using lots of files and several people coding at the same time. And the PC our university has provided to us is quite slow so some stuff take way too much time.

The transition wasn't as easy as we had hoped for though, and it took a day to figure everything out. So to hopefully make things smoother for others, here's how we did it.

Serial transmission and when to initialise it

Hello!

 I am trying to figure out how to transmit data from one atmega to another one via IR. Oh btw i am using arduino language.

First thing i though of was setting the serial communication by using serial.begin in the setup function. I tried that and i noticed that the LED connected to the TX pin on the arduino lights up as soon as i give power to the atmega. This is not really what i wanted, cause i'd like to have the LED off when not in use.

Hi guys, this is my current project, i thought the programming would be easy, but since i havent used my arduino for months, it's not going so well, lol. Well … Read more

Peculiar ldr problem...

Hi, well got my robot to follow light, to see if everything was working fine, but the weird thing is, instead of changing direction in real time, it only changes direction when i reset my arduino board, same thing happens if i watch the serial monitor.

 

for example

 

it prints out 500 to the serial monitor

keeps printing 500, even if i change the light source.

At the Eindhoven University of Technology, faculty of Industrial Design, we have created an easy accessible Robot platform to learn embedded and computer … Read more
  My first non-kit robot. Inspired a lot by the "Start here" robot on this site! Read more

simple ardbot - start

 

I've just started on my first proper robot. I had a bunch of parts laying around that I had bought over the last several weeks, and when I was organizing them they sort of logically grouped into a basic robot:

runs around shooting things. for now
Using a
My parts are alive again. my bot recycling is in force. started out with raduinos treaded base and a pair of servos from blocky.some 5min epoxy and some random … Read more