Sunday
Nov202011

Advanced Servo Mixer powered by Arduino.

I have recently began playing around with RC planes and helicopters and like most things I delve into I find limitations on things I want to do but I am unable because the products offered for the masses are limited.  This is typically because they tend to sacrifice complexity for ease of use.  In this case I require a servo mixer that can do conditional mixing.  The following video might illustrate my needs a little more clearly.

Currently I have been able to find 2 types of commercial servo mixers on the market.  The first I'll call a "dumb" type which simply takes 2 inputs and mixes it to 2 outputs.  This isn't to say the product is bad, it definitly works well for what it does, I am just calling it "dumb" to say it has no configurability.  The second type is made by Desert RC.  This mixer is a little better in that it is programable and can be configured for custom mixes, but you are limited to using their configuration utility and there are limits.  While the desert RC mixer is a fantasic product it will not work for my needs.

I have decided to try and build my own servo mixer that will be based on Arduino.  The type of mixer I am making would never work for the masses because to configure it involves writing code.  By writing code, I will have total control over how the mixer process input commands and passes them to output commands.  In my case I am sacrificing ease of use for complexity.

Here is a video overview of the current draft of the schematic I am working on. (Best to watch in fullscreen 1080p in order to see all the schematic symbols)

As always feedback is welcome.

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Reader Comments (3)

Great post.. I've done something very similar with an ARM7 (LPC2103) core... Thanks for sharing!

November 28, 2011 | Unregistered Commenterilovefpv

I would love to see what you have done.

December 16, 2011 | Registered CommenterDamage

I have been working on a similar project. I searched Google so that I would not reinvent the wheel. This is what I want to do, with the exception of a few more inputs and outputs. Should be simple. Now, are you selling and of the boards. I am thinking of a purchase to use as a test board. This would assist me in my small steps method.
I also have ideas on the code, but if you have any samples, that would be terrific.
thank you
Rick Harms
rick@inharmsway.org
rick@harms-family.com

August 13, 2012 | Unregistered CommenterRick Harms

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