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Post by bender on Mar 5, 2007 17:45:07 GMT 10
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Post by Bones on Mar 5, 2007 23:40:38 GMT 10
Hi Bender,
You could make your own a pic or an avr. There's heaps of code out there.
Or grab a SSC-32 from robotoz for $80.
I went both ways. built on and bought one.
Let us know if you want any code or do a google there are some with just 5 servos.
What are you using it for?
Actually just go a PICAXE it has serial and servo control.
There you go under $10. ;-)
Done.
Cheers
Bones
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Post by bender on Mar 6, 2007 12:56:07 GMT 10
its for a simple pan/tilt type of thing im doing with a mate of mine. i looked at the picaxe bet it seems that servo control doesn't work if you are using serial  if i cant find a cheap prebuilt one then il do something like this www.rentron.com/SerialServo.htm but atm would prefer to find one made already |
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Post by bender on Mar 6, 2007 13:46:21 GMT 10
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Post by Dingo on Mar 10, 2007 10:11:23 GMT 10
If cost is the major factor (when is it not?) then I'd suggest a simple setup using just a microcontroller to receive the serial and drive the two servos. I've not done it with a PIC as the links you posted have but I have done it with an AVR. All you need is the ability to program the microcontroller. (I did meet a bloke on the weekend who gives away Atmel STK500 compatible programmers for free). If you can program an AVR, all you need is the official AVR studio, plus the GPL'd (read as "free") AVR-GCC compiler (google WinAVR) and the Procyon library ( hubbard.engr.scu.edu/embedded/avr/avrlib/ ) Then you can load the serial library and the servo library into your C program and then upload the code to the AVR. With a few wires hooking everything up, you'll be controlling your two servos in no time and the cost will be for: 1x programmer (USD$10 from http://www.olimex.com) 1x AVR Mega32 (AUD$6 from http://www.futurlec.com.au) Some wire, 9-pin serial connector and a few other bits and pieces. Plus the programmer is a fixed cost and you can use it for the next project. So variable cost of your servo controller would probably be AUD$10 - AUD$20. Plus you have the complete source code, not just a hex file from another project. So you can make any improvments you want. PS I'm sure there will be several complete servo projects using AVRs at www.AVRfreaks.net (you just need to register for the projects section) |
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Post by FSDSDF on Aug 14, 2008 17:41:42 GMT 10
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Post by FSDFSD on Aug 14, 2008 17:43:22 GMT 10
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Post by FSDFSD on Aug 14, 2008 17:45:03 GMT 10
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Post by FSDF on Aug 14, 2008 17:46:38 GMT 10
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