DIY servo stretchers available?

[RCvertt]

Any DIY servo stretchers, servo slows and exponential servo drivers available? Source and schematics?

Not looking for an all in one package. Individual designs would be the best that I can then plug into each other.

Not much luck with google or the search feature for this forum and most retail stretchers, slowers, and expontial servo drivers are $20 or over and I need two of each :(

[Tomapowa]

Any DIY servo stretchers, servo slows and exponential servo drivers available? Source and schematics?

Not looking for an all in one package. Individual designs would be the best that I can then plug into each other.

Not much luck with google or the search feature for this forum and most retail stretchers, slowers, and expontial servo drivers are $20 or over and I need two of each :(

A Forum "search" for "servo slow down"...

http://www.rcgroups.com/forums/showthread.php?p=11051207#post11051207

[AleG]

If you can program an AVR microcontroller I can give you the code to do that. It's actually quite simple really.
I used a similar function on a gadget I'm working on now (http://www.rcgroups.com/forums/showthread.php?t=973183) to slowly rotate a servo one way or the other. If you look at the code (and know C, of course) you can see how it works.

[Acetronics]

Any DIY exponential servo drivers available? Source and schematics?



Hi,

Exponential is looking fine ... but What about Exponential trim :D ???

Just an idea

Alain

[RCvertt]

Thanks for the responses!

Tomapowa- I missed that one. Looks like the 180 or close to 180 stretcher is the difficult one to find.

AleG- Thanks for the info. I'll need my servo to stay proportional to the TX stick positions but I would think that the same basic concept you are using would apply.

Acetronics- Exponential trim would be nice. Do you have any source code available?

Ideally I would like each of these devices to have their own pots on them for controll. A pot would controll how slow the Servo slow moved, one would controll how far the servo stretcher travels and one would controll how much expo from stick center there was. Similar to this (http://www.dionysusdesign.com/product_info.php/products_id/172) product.

Forgot to mention that the more resolution it has the better. (200) steps may be acceptable but I would like to keep it at around (600) or more. (1200) and above would be ideal.

I'm going to try placing some pots on aGWS (http://www.gwsus.com/english/product/auxcircuit/vtail2.htm) vtail mixer I have, to see if I can get it to go closer to a 180 travel limit. If I do though I suspect it will be like a hacked servo with resistors which don't exactly center very well.

Also just purchased an ArduinoProMini so if anyone has source code for how to do what I want on this that would be great.