Is there any C code for ATMEL's AVR micro controllers to read servo motor position data from a serialport and control 16 RC servo motors simultaneously?
- posted
19 years ago
Is there any C code for ATMEL's AVR micro controllers to read servo motor position data from a serialport and control 16 RC servo motors simultaneously?
There is plenty of code out there for 8 channels. Why not use two AVRs?
Peter
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Thank you for the idea. Would you tell me where can I find C code for AVR to drive 8 RC sermo motors?
Most AVRs include 8 A/D channels for reading the servo pos. However, you would need external D/A to drive the motors. Your C codes depend on your external hardware.
Actually you need digital signals to drive the RD servo. No need for a D/A at all.
SioL
No, the servo-motors are controlled by a pulse train. You feed them a stream of pulses, where each pulse is between 1 and 2 ms wide, and the pulses repeat with about a 20ms period.
You don't need external hardware. You just need to generate digital pulses -- 5V logic levels should work fine.
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to
Have a look at the Dontronics web site at
Peter
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The only one's I know of is using one of the
You could also do it using some of the AWC
Have you tried asking this as
assembler.
It's easily extensible to 16 channels as is. The servo positions are stored as data in ram, and there are interrupt driven serial routines in the same package, so in the main loop it would be trivial to parse out some language like S1=128 and stick the appropriate value in ram for the next update.
Assembler code for controlling 16 servo's from an Atmel controller is available at:
Anton
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