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Pinecil: Portable USB-C RISC-V soldering iron

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Re: Pinecil: Portable USB-C RISC-V soldering iron

#51

Post by [deleted] » Wed, Nov 25, 2020, 3:45 AM UTC

dogma1138 wrote: post #33

londons_explore wrote: post #16

It's theoretically possible with USB-C to avoid the power MOSFET for the heater, and instead instruct the power supply to vary the voltage between 5v and 20v which should adjust the heat output by a factor of 16... Could be a neat way to make an ultra low cost iron...

USB type-c power delivery is 5 or 20V it’s not a variable voltage supply. Switching between the modes isn’t fast enough and if you do try to pulse modulate it you more likely than not to kill your power supply as they weren’t designed for that.

[deleted]

Re: Pinecil: Portable USB-C RISC-V soldering iron

#52

Post by buescher » Tue, Dec 01, 2020, 10:53 PM UTC

janzer wrote: post #41

voxadam wrote: post #39

Earlier quoted context omitted.

That's something I'd enjoy reading.

I'm guessing that it is this one https://www.electronicdesign.com/technologies/analog/article... Unfortunately it looks like all the figures are 404 on the article, fortunately IA seems to have them https://web.archive.org/web/20201112004309/https://www.elect... Edit: Bit of a funny aside; the editor who wrote the subtitle incorrectly identifies the P in PID as "Peripheral" even though the article correctly states it…

Wow, thanks for tracking that down!

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