Electronics > Projects, Designs, and Technical Stuff
Strain gauge Joystick - Could something like this work?
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jfitter:

--- Quote from: Kilrah on February 01, 2020, 02:06:12 pm ---
--- Quote from: jfitter on January 31, 2020, 07:34:41 am ---The problem with simple force sensors on fixed sticks is that there is an output for any force.

--- End quote ---
That's why you use the difference as your input, proper thresholds etc. I did play with FSR-based sticks in the past and had good results for the intended purpose.


--- Quote from: jfitter on February 01, 2020, 09:27:14 am ---The top radios have precision machined gymbals floating on ceramic bearings with 16 bit hall effect angle sensors on each axis

--- End quote ---
Nothing in the OP says he requires such precision though. And having a foot in that field, a lot of what you just touted is just clever marketing :)

--- End quote ---
Garbage - do you actually have one of these. I do. Open it up and have a real look. As an embedded design engineer for 30 years I do know what I am looking at.

The problem with these forums is the answers from people who clearly have no idea what they are talking about. I reply to almost nothing, and only when I see a question that I have experience in and know a great deal about do I answer and offer advice. It is usually met with responses from the peanut gallery, which is why I don't reply very often.

You lot are on your own. Figure it out yourselves.


MarkF:

--- Quote from: jfitter on February 01, 2020, 11:50:45 pm ---
--- Quote from: Kilrah on February 01, 2020, 02:06:12 pm ---
--- Quote from: jfitter on January 31, 2020, 07:34:41 am ---The problem with simple force sensors on fixed sticks is that there is an output for any force.

--- End quote ---
That's why you use the difference as your input, proper thresholds etc. I did play with FSR-based sticks in the past and had good results for the intended purpose.


--- Quote from: jfitter on February 01, 2020, 09:27:14 am ---The top radios have precision machined gymbals floating on ceramic bearings with 16 bit hall effect angle sensors on each axis

--- End quote ---
Nothing in the OP says he requires such precision though. And having a foot in that field, a lot of what you just touted is just clever marketing :)

--- End quote ---
Garbage - do you actually have one of these. I do. Open it up and have a real look. As an embedded design engineer for 30 years I do know what I am looking at.

The problem with these forums is the answers from people who clearly have no idea what they are talking about. I reply to almost nothing, and only when I see a question that I have experience in and know a great deal about do I answer and offer advice. It is usually met with responses from the peanut gallery, which is why I don't reply very often.

You lot are on your own. Figure it out yourselves.

--- End quote ---

Are you all talking about RC Model airplanes or actual aircraft?
I was referring to the actual aircraft and we just used the un-certified ground version.
Still far too expensive to take apart ($16,000).  I don't know the internal mechanism.  Just that they are force sensitive.
i_am_fubar:
I question the need for 16 bit hall effect. Assuming 50mm of tip travel, that means your controlling down to 800nm of positional accuracy. That is..... Not going to happen. 50um (10 bit), can't believe you would notice a difference?
Kilrah:

--- Quote from: jfitter on February 01, 2020, 11:50:45 pm ---Garbage - do you actually have one of these. I do. Open it up and have a real look. As an embedded design engineer for 30 years I do know what I am looking at.

--- End quote ---
I never said it's not what was inside, only that it's a marketing gimmick rather than something actually significantly beneficial. I've seen a few fun blind tests.

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