Servo Pulser problem

[malc-c]

So you chose to make that one rather than Alaine version ( http://www.picbasic.co.uk/forum/atta...8&d=1169308729 )

I use RS components here in the UK and they don't list 390nF value. I'm sure for your purpose a 400nf capacitor would suit. Likewise a 5K trim pot could be used, but you may not need to use all the range to get the 1ms - 2ms pulse width.

[malc-c]

As this forum is really about Pic programming, why not look at using a PIC to do the job for you. Here's some links I found

http://www.dougrice.plus.com/hp/RCservo/rcservo.htm
(includes HEX code and is simple to build)

http://www.rc-cam.com/servotst.htm
(Hex and documents for download)

http://www.electronics-lab.com/proje...008/index.html
(Asm and schematics)

From the same site as your original servo pulser have a look at this one
http://www.uoguelph.ca/~antoon/gadgets/servo2.htm
It uses more standard values

As does this version
http://www.uoguelph.ca/~antoon/circ/archive/servo1.htm

Another 555 timer based servo tester
http://www.hobbyengineering.com/appServoTester.html

And another
http://hometown.aol.com/hprinzler/9610-03a.gif

I could go on.. but I have other things I need to do. Just type in NE555 Servo tester into any search engine if you want more