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Hi Lee
Two thoughts Re stepper motors. You can often find them in old junked scanners. A nice cheap source. If you are feeling really cheap the interface can intially be a simple TTL counter cct and some pass transistors. I once used one off my PC parallel port for an EzAl antenna system. Also look at the possibility of using a piston capacitor and driving that with a threaded bar connected to your motor. This may still be a little fast though. You might also get away with a long lever and threaded bar arrangement if turning a standard rotary capacitor. Kind of limits you to something less than 180 degrees tho. A car windscreen wiper motor is another possibility also through a threaded bar. (Overkill on the torque tho) Cheers Bob Vk2YQA Lee wrote: "Richard Clark" wrote in message ... On Sat, 08 Oct 2005 06:26:31 GMT, "Lee" wrote: Seriously, any ideas to slow the tuning rate will be most welcome . |
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