Electronics > Projects, Designs, and Technical Stuff
Variable Resistance (potentiometer-like) Foot Pedal?
rvalente:
--- Quote from: SiliconWizard on December 19, 2019, 03:01:08 pm ---
--- Quote from: rvalente on December 19, 2019, 02:08:22 pm ---Another option would be gas pedals from cars, there are plenty of options and I'm sure chinese or you local dealer can support you.
They're are basically two pots inside, some in opposite directions. Supply them with 5V and bang, there is your output.
Simple, ergonomic, very robust and maybe cost-effective.
--- End quote ---
Yep, you can find many of those used on eBay and others for cheap. They are usually easy to use as there's not much more than two pots inside as you just said (they are rarely active).
The fact they have two pots for redundancy is also a plus.
--- End quote ---
There is a series from Hella Automotive that employ a very fancy capacitive technology, instead of a pot with a wiper there is a mesh over a pattern, but the output still is a analog voltage. I have not yet seen can bus gas pedals, but that's off topic
I'm not in US but, here in brazil I can find a used gas pedal, nom model specific around 10 bucks
Electro Detective:
fwiw there is no shortage of muso pedals in this part of the world, loads in pawn establishments too
all the ones I've sorted had 10k or 20k? standard pots IIRC and some sort of stop travel thingie in the gear arrangement
and yes, a cheap TIG pedal will do the job, that's IF you can find any cheap ones.
Weldors with no clue about electronics are easy targets for motormouth sales goons flogging overpriced 'former reputable brand name' crap in thick powder coated metal housings,
in familiar blue or red, and lately in yellow and green too. ::)
PhysicsDude55:
Thanks everyone for your replies and suggestions.
It looks like there are a bunch of ~$25 foot pedals for newer sewing machines that are just an internal 10K POT with a 2 wire connection.
According to a review on this Amazon listing:
https://www.amazon.com/Foot-Control-Pedal-XC6651121-Brother/dp/B0038RENYQ/ref=pd_sbs_328_7?_encoding=UTF8&pd_rd_i=B0038RENYQ&pd_rd_r=c6f0784a-04dd-4e03-8e7e-b4c3df3a2bc1&pd_rd_w=bKeL7&pd_rd_wg=qGFSH&pf_rd_p=5873ae95-9063-4a23-9b7e-eafa738c2269&pf_rd_r=J52VYNY8H2ACQK9HQKX1&psc=1&refRID=J52VYNY8H2ACQK9HQKX1
There is a linear 10K pot inside with a microswitch to make an open circuit when the pedal isn't pressed. Looks like this same model of pedal (probably from the same chinese manufacturer) is all over ebay as well. Just make sure it has the 2 conductor 1/8" (?) mono style plug rather than any sort of mains connection.
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