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Ive run Robotics India since a few years now, I can say about 80 % visitors are looking to take part in a competition. But most people end up building the same old robots making the same mistakes year after year and I am not really seeing any improvements in robots which participate in this competitions. So I thought to start a series on how to build better robots for most of these competitions with some tips to help you win. Proposed specifications are of target robot which should be able to
I make prototypes of single sided PCB's at home before i send them over to a PCB maker , So here is a quick Tutorial of what i do ...
Things you need -
1. Ferric Chloride
2. Copper Clad Board
3. Laser Printer
4. Fine sand paper
Step 1. Print layout on glossy paper and cut a Copper Clad PCB accordingly. Use fine sandpaper to clean PCB. Leave extra edges around layout , it helps in transfer.
Updated 01-31-2010 at 06:12 AM by vikas
This article covers the 3 main types of motors which are used in robotics namely the DC motor , Stepper motor and the Servo motor. The article also gives various circuits which can be used to drive the motors . This article is a must for all those starting out or are confused about motors .
Nearly all the robots we make have motors be it servo , stepper or some other unless you are using stuff like pneumatics , synthetic muscle etc . Any way coming back to the point there are mainly 3 types
Updated 03-06-2010 at 03:17 AM by support
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 to be single sided and DIP for DIY.
The shield given below is the result for the same.
Some Features -
Dual DC Motor support with PWMServo motor supportDIY Single sided PCBEasy sensor interfacingStackable
Ideas for improving it are
Piezo speakers are quite fun components. They can play as well as detect frequencies. The basic idea behind making them play tunes is to send a "Square wave" of the corresponding frequency. By Square wave, I mean , the HIGH and LOW time should be equal.
How do we get the high and low time out of note frequencies?
High time = Low Time = 1/(2*NoteFrequency)
For Example, a basic C note (western musical notation) is 261 Hz. (http://www.phy.mtu.edu/~suits/notefreqs.html)