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her63
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· 06/02/2020 9:10 AM
keep healthy bro, love roaster form home

pisanoal
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· 05/27/2020 10:14 AM
Anyone else have issues seeing the whole window of a thread when accessing from a mobile phone? Any fixes?

allenb
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· 04/02/2020 4:50 AM
Morning Ed, I haven't done any green coffee hoarding yet but am hoping the supplies don't end up like the toilet paper isles!

snwcmpr
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· 03/31/2020 2:53 PM
Hey Ed. Thanks. roar

homeroaster
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· 03/31/2020 11:21 AM
Hey quarantined home roasters! I hope you have great coffee! If they have a run on coffee, I hope you're set with your great home roast! Find me on Facebook! Ed Needham

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Need help rewiring new popper
Gullygossner
I studied your photos but I could not see how or what the TC sleeves were grounded to.

I tried grounding the metal of the popper to earth via the mains power with no success.

I do not have any switching regulator in my setup. 110v heater, 110v fan and the arduino is powered via my macbook air which is running on battery power during operation.
 
marcov
My TC sleeves are tied to the metal parts of the popper, hence they are grounded.

I suggest you anyway to keep the metal of your popper grounded to earth for your safety.

I played around a bit before finding a solution that worked for me. Start by trying to undertand what's the source of your bad readings, so that you know what needs to be fixed.
 
renatoa
Or use unshielded probes.
If not a noisy medium, like brushed motors in the proximity, then unshielded works fine. I am using unshielded probe in my roaster with under 0.1 C reading stability.
 
Gullygossner
I will ground the metalic body of the popper again and see what happens.

I started out with a shielded probe but figured that was the source of my issue so cut the probe off and tried with exposed thermocouple ends. I have a feeling that the AC fan is the source of the issue, but rectifying the problem has been puzzling.
 
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