QuickStart Candle

Circuitsoft

I suppose it's probably moisture sensing. Anyway, run this on a quickstart. The last LED lights up. If you blow on the button next to it, it will dim, and it may take some time for it to recover.

CON

  _XINFREQ = 5_000_000          'Propeller Processor Crystal value (5MHz)
  _CLKMODE = XTAL1 + PLL16X     'Set PLL value to X16 to get an 80MHz (5MHz x 16 = 80MHz) clock

  SensePin = 0                  'ADC INPUT pin
  DrivePin = 16                 'ADC OUTPUT pin
  
VAR


PUB CapsenseDemo | time
  outa[SensePin] := 1
  dira[SensePin] := 1
  dira[DrivePin] := 1
  cognew(@DriveLED, 0)
  repeat
    dira[SensePin] := 1
    dira[SensePin] := 0
    waitcnt(cnt+(clkfreq/500))
    
DAT       
DriveLED      org
              mov       dira,tmp

Loop          mov       tmp,ina
              shl       tmp,#16
              mov       outa,tmp
              jmp       #Loop
              
tmp           long |<16

idbruce

I suppose it's probably moisture sensing.

Or perhaps it could be sensing BAC Sorry, Circuitsoft, I couldn't resist

Circuitsoft

While I'm not exactly a teetotaler, I don't drink very often, so...

So has anyone actually found this amusing, or is it just me?

doggiedoc

I'm going to give it a try. At least the moisture part. I don't drink so the BAC part I can't test.

doggiedoc

I had to actually lick it to get the LED to dim.

Circuitsoft

Blow slower, and from closer. It'll build up just a tiny bit of moisture, then should brighten as it dries.

doggiedoc

Yes. A long "haaaaaaa" from an inch or so works good. The same way you might try to fog a cold window with your breath. Pretty cool. Thanks for sharing.

xanadu

I think this is what allowed Nintendo games to work back in the day.

skylight

[wheeze] very good Circuitsoft,[wheeze] I've got it to dim [wheeze]i'm just going to [wheeze] take a break now [wheeze] while I get [wheeze] my breath back [cough]