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Current sensing

Senses current drawn by a motor

 Collected by 23 members
 
This simple circuit will allow your processor to monitor the current being drawn by a motor or any other device. The circuit shown will monitor currents up to 20A … Read more
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Tip/walkthrough

Using Gobetwino to debug your sensor data

Allows your robot to control PC applications / display sensor data
Using a

 Collected by 6 members
 
Gobetwino is a free program designed to allow Arduino boards to control PC aplications. Because it reads a serial com port it is not limited to Arduino boards and … Read more
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Tip/walkthrough

Wireless upload / link of Arduino using Xbee modules

Gives you a wireless connection to your robot

 Collected by 26 members
 
Recently I tried to set up a wireless link between my laptop and a robot so that I could upload new sketches and adjust certain parameters of the program while the … Read more
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Forum topic

Interfacing yor robot to your PC using Gobetwino (can work with any MCU)

By OddBot

April 30, 2012
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I am currently working on a project where I need to teach my robot to "see" using an ultrasound sensor. In particular it must find and collect drink cans on a playfield and return them to a specific location.

To make the programming easier I wanted to take the sensor output from the robot and display it on the computer as a chart. As I am a terrible programmer I did a quick google search and came up with Gobetwino.

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Blog entry

IR navigation beacons

By OddBot

April 27, 2012
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There have been several previous blogs and forums on LMR concerning different methods of robot navigation and room recognition. I have decided to make some IR beacons for experimenting with.

My theory is that if each room has at least 3 beacons spaced around it then the robot can not only triangulate it's position within the room but also determine what angle it is facing. Each beacon sends out a different identification code. This allows the robot to know which room it is in.

Tip/walkthrough

Burning the Arduino Bootloader onto an ATmega168PA

Helps you burn the bootloader on a ATmega168PA.

 Collected by 3 members
 
Introduction: These instructions were based on Arduino 1.0 running on Windows XP. They should work for other operating systems. Since version 0018 of the Arduino … Read more
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Blog entry

Maker's Faire - ShenZhen China

By OddBot

April 11, 2012
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This was the first Makers Faire where I got to go with ChopSticks!

It was the first Makers Faire ever to be held in China so as you might expect it was not the huge spectacle that the American faires are. Eric Pan, who is the CEO of Seed Studios and currently sponsering LMR did a great job in organising this event.

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Forum topic

Miniature servo magnetic clutches

By OddBot

April 14, 2012
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Miniature servos are great for robotics, they are small and cheap. Unfortunately they have very small plastic gears that strip easily so they always need replacing....  or do they?  Not any more!!!

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Tip/walkthrough

Driving up to 48 servos with a Spider controller

Controls more servos than you can fit on one robot :p
Using a

 Collected by 12 members
 
This tip/walkthrough will work with all Arduino Mega PCBs and their clones. I have found the instructions for the servo command to be a little vague so in this tip … Read more
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Micro Magician robot controller - I can finally tick the project complete box!

By OddBot

March 30, 2012
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I started designing this controller in December 2011. After 4 months and 2 previous revisions it will finally be shipping out April 2012. I think this is DAGU's best Arduino compatible robot controller yet!

Designed for small robots using small batteries, the Micro Magician is a 3.3V controller running at 8MHz.
Working from 4.5V to 9V means this constroller can run from a single LiPo cell or 3x NiMh batteries.
Reverse polarity protection means no blue smoke if you get your power wires crossed (reverse polarity diode rated at 3A).

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