Re: Moped data acq attack

Graham Motzing /
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Next, hooking it up:

https://learn.adafruit.com/thermistor

This really is the gold standard for explaining how to hook up these lil' guys to an arduino. Pretty much every other site on the web is just a poorly written paraphrase version of this.

The circuit basics site was also helpful because they talk about 100,000 ohm thermistor specifically, but after a lot of head scractching, it turns out they just copied the Adafruit code and fucked it up. As i was saying earlier, they are using the coefficient and r1 for a 10k thermistor, and circuit basics (i'm not gonna do them the favor of linking) just copied it verbatim without converting it to a 100k ohm thermocouple.

I wrote my code to use pins a1, a2, a3 just because the feather is using a0 for some stuff and i didn't want any confusion.

I'm still sorting out the ballast resistors and playing around but right now i'm using 10k ohm. The analog input pin only knows if its seeing between 0-3.3 volts, it divides that into 1024 bits, and reports which bit out of 0-1023 its reading. The trick with the resistors is to spread out the change in voltage based on the change in resistance across as big of an area as possible. I could actually plot all this out in excel but i'm lazy and that feels way too much like college. blech.

Anyhow, nothing much more than that to say, super simple to hook up, i just have all the +3.3v outputs all hooked to the same pin, seems to be working so far. There will be a balancing act for the 500ma power supply, the resistances, and setting everything up so its not burning power for no reason, but so far it doesn't seem to be a problem and i haven't run it long enough to find out.

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Subject Written By Posted
  Moped data acq attackTopic by: Graham Motzing Graham Motzing 10/01/21 03:31PM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/01/21 03:57PM
  Re: Moped data acq attackRe: * wormdirt * * wormdirt * 10/01/21 05:59PM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/01/21 06:54PM
  Re: Moped data acq attackRe: daan SJAARLOOS daan SJAARLOOS 10/01/21 06:34PM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/01/21 09:05PM
  Re: Moped data acq attackRe: Poop Wizard Poop Wizard 10/01/21 08:29PM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/01/21 09:00PM
  Re: Moped data acq attackRe: 🇮🇹💦 Of the Loin 🇮🇹💦 Of the Loin 10/01/21 09:13PM
  Re: Moped data acq attackRe: 🇮🇹💦 Of the Loin 🇮🇹💦 Of the Loin 10/01/21 08:53PM
  Re: Moped data acq attackRe: Full Tuck Full Tuck 10/02/21 12:15AM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/02/21 10:34AM
  Re: Moped data acq attackRe: 🇮🇹💦 Of the Loin 🇮🇹💦 Of the Loin 10/02/21 01:20PM
  Re: Moped data acq attackRe: Jesse Stephenson Jesse Stephenson 10/02/21 01:00PM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/02/21 03:02PM
  Re: Moped data acq attackRe: Jesse Stephenson Jesse Stephenson 10/02/21 04:28PM
  Re: Moped data acq attackRe: b to the eff b to the eff 10/02/21 03:04PM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/02/21 07:40PM
  Re: Moped data acq attackRe: b to the eff b to the eff 10/02/21 09:31PM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/03/21 10:56AM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/03/21 03:53PM
  Re: Moped data acq attackRe: 🇮🇹💦 Of the Loin 🇮🇹💦 Of the Loin 10/04/21 10:36AM
  Re: Moped data acq attackRe: b to the eff b to the eff 10/02/21 03:21PM
  Re: Moped data acq attackRe: b to the eff b to the eff 10/02/21 05:39PM
  Re: Moped data acq attackRe: Jesse Stephenson Jesse Stephenson 10/02/21 07:16PM
  Re: Moped data acq attackRe: b to the eff b to the eff 10/03/21 11:06AM
  Re: Moped data acq attackRe: b to the eff b to the eff 10/04/21 12:22AM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/04/21 09:49AM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/04/21 03:01PM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/04/21 03:19PM
  Re: Moped data acq attackRe: Graham Motzing Graham Motzing 10/04/21 03:25PM
  Re: Moped data acq attackRe: b to the eff b to the eff 10/04/21 04:21PM

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