[sdiy] Two parameter mechanical controller thoughts....

Quincas Moreira quincas at gmail.com
Fri Jun 7 19:11:52 CEST 2019

I think I'd lose the softpot too, and use some kind of belt/pulley to turn
a rotary pot/encoder

On Fri, Jun 7, 2019 at 9:58 AM thresholdpeople via Synth-diy <
synth-diy at synth-diy.org> wrote:

> The thing with CNC gantry systems like 3D printers is that most lower end
> ones use stepper motors for both the drive and positioning, so running them
> in reverse won't be possible to create a control voltage based on position
> with out a whole lot of extra circuitry. However they may often have parts
> like linear bearings, precision-ish shafts, and all sorts of other hardware
> that could be re-purposed.
> Check out Author & Punisher - http://www.tristanshone.com/ - he makes
> awesome controllers, and has one or two that are as you're describing,
> Pete. He's pretty open about construction and functionality.
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Friday, June 7, 2019 9:55 AM, Pete Hartman <pete.hartman at gmail.com>
> wrote:
> On Fri, Jun 7, 2019 at 7:07 AM bbob <fluxmonk at gmail.com> wrote:
>> i'd go wireless - bluetooth or ble from whatever controls are on the
>> carriage, and a time-of-flight sensor to measure the carriage position.
>> there's probably a lot of hardware bits you could repurpose from folks
>> developing diy 3d printers for the carriage mechanics.
> I'm not sure wireless would be practical for within-the-module
> communications in a Euro module or standalone controller meant to interface
> with Euro.....
> 3D printer carriages would be a good source of inspiration though.
> The linear bearings at McMaster look really interesting, I'll have to
> spend some time digging around in that stuff.
> Thanks
> Pete
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Quincas Moreira
Synth Diy Guy
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