| Electronics > Projects, Designs, and Technical Stuff |
| Variable Resistance (potentiometer-like) Foot Pedal? |
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| Electro Detective:
Any musician guitar, bass, keyboard 'volume pedal' that has a standard pot in it can be modded with a pot in the value and taper required. Tip: try the pot you think you need first before fitting, and buy some exact value spares once you've got a winner If you can't find a volume pedal, gutting out a stuffed wah or swell pedal will do the same job, as long as it's mechanically ok i.e. the pedal and gear parts work Some pedals have opto-couplers? instead of pots, watch out for that :o |
| rvalente:
Tig welders uses pots for controlling tje current, check for them, im sure they are plenty available on ebay and similar |
| MagicSmoker:
--- Quote from: Electro Detective on December 19, 2019, 08:48:04 am ---Any musician guitar, bass, keyboard 'volume pedal' that has a standard pot in it can be modded with a pot in the value and taper required. ... --- End quote --- Maybe not so standard, in my experience. I made my own TIG foot pedal a couple years ago because I refused to pay $700 to Miller for essentially the same thing that would cost a musician $30. What I found after taking apart several pedals was that the pots inside are often strange multi-track beasts with no stops (ie - free spinning), unpredictable resistance spans (not a one went all the way down to 0R), and which are usually mounted by being captured in a split compartment in the enclosure body (ie - not bolted to something, presumably to allow for slop in the various mechanisms). In short, these things tend to be value-engineered to the penny and therefore not quite as amenable to hacking as might appear. |
| rvalente:
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. |
| SiliconWizard:
--- 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. |
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