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Cluricaun
Joined: 28 Sep 2001
Posts: 940
Helped: 13
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 06 Jul 2002 15:05 model RC relay |
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Hi
I need help to design an on/off switch thats controlled by a model radio. I can use the signal sent to the servo and the on time and current is not critical, just a low effect on off switch is needed. Can anyone help me how to encode the servo signal to give a output pulse of approx 250-500ms?
Best regards
You already post this 3 times, I deleted 2 of them.
hc
Last edited by Cluricaun on 29 Mar 2004 22:25; edited 1 time in total |
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Elavionic
Joined: 06 Apr 2002
Posts: 94
Helped: 1
Location: Portugal
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| 08 Jul 2002 1:08 |
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I don´t understan very well what you want, it's a pulse for each time you send the command or a toggle? Never the less both of them can be made using a simple µC (PIC12C508 or Atmel Tiny). All the RC receiver deliver the same signal, a 1 (0º) to 2(180º) mS high every 20 mS. If you use the neutral position 1,5mS (90º) as a reference you can switch ON/OFF just sending a 1mS for OFF or 2mS for ON.
Try serching the web and you'll find some projects for speed control with a 12C508, with source code(sorry, but i don´t have the link). It can be a starting point. I hope this post helps you. Best regards.
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shanren
Joined: 12 Oct 2001
Posts: 106
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| 18 Jul 2002 7:23 |
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| i do not understant what you want too.but if you want a pluse on/off of 200-500ms,you can use a sigle monostabillity circuit.such as a ne555,or so.
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