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Old 06-26-2013, 12:21 AM   #11
atoughram
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More questions - for the function setThermistor - Your looking for an array of 4 variables for the steinhartCoefs. I guess these are for the values of A, B, & C? Is there a D??
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Old 06-26-2013, 12:24 AM   #12
franckgaga
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-bugfixe : identRimsBasic was not compiling because of a change made in UIRims constructor

Please re-downlaod

 
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Old 06-26-2013, 12:32 AM   #13
franckgaga
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Quote:
Originally Posted by atoughram View Post
More questions - for the function setThermistor - Your looking for an array of 4 variables for the steinhartCoefs. I guess these are for the values of A, B, & C? Is there a D??
I've classified my coefficients by power order, i.e. :

Code:
|| C0 || C1 || C2 || C3 ||
But, in fact, if we follow Wikipedia and many datasheets, equation is :



So, with this definition above, array format would be :

Code:
|| A || B || D || C ||
In datasheets, D is often omitted because of is low influence in the results. You can just write "0" for D coefficient.

Cheers !

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Old 06-26-2013, 02:23 AM   #14
atoughram
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Thanks! I'm sure I'll have more questions soon.. I'll have to find a thermistor and play with this a bit more.
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Planning - Something Sinister
Fermenters - Carbon River Hefeweizen OG 1.052
On tap - SAMM I am IPA 1.069

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Old 06-26-2013, 04:35 AM   #15
franckgaga
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added : Possibility for 2 regulators useful for brewing simple\double batch

 
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Old 06-26-2013, 04:46 AM   #16
atoughram
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Quote:
Originally Posted by franckgaga View Post
added : Possibility for 2 regulators useful for brewing simple\double batch
What is meant by a simple or double batch? My batch size is a fairly consistent 11 gallons.
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Planning - Something Sinister
Fermenters - Carbon River Hefeweizen OG 1.052
On tap - SAMM I am IPA 1.069

 
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Old 06-26-2013, 04:55 AM   #17
franckgaga
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Quote:
Originally Posted by atoughram View Post
What is meant by a simple or double batch? My batch size is a fairly consistent 11 gallons.
It's because for me...I've got a big cooler for my MLT...If i'm brewing alone, I just brew a 6 gal but if i'm brewing with my friends i'll brew a 11 gal that still fit in it.

If you are always brewing the same quantity, this features is useless...just ignore it, i.e. call setTuningPID and/or setSetPointFilter as before.

 
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Old 06-26-2013, 05:04 AM   #18
atoughram
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setInterruptFlow ( byte interruptFlow, float flowFactor ) - I understand the flow factor - but interruptFlow is the whole number (0-255) measurement of flow if when reached, shuts off the heaters?

Ordered 10K Thermistors and a 0-30 l/min flowmeter from Ebay - looks like I'll do some testing for you when they get her.
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Clover Creek Brewery, Puyallup WA Home Brewers of Puget Sound
Planning - Something Sinister
Fermenters - Carbon River Hefeweizen OG 1.052
On tap - SAMM I am IPA 1.069

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Old 06-26-2013, 05:18 AM   #19
franckgaga
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Quote:
Originally Posted by atoughram View Post
setInterruptFlow ( byte interruptFlow, float flowFactor ) - I understand the flow factor - but interruptFlow is the whole number measurement of flow if when reached, shuts off the heaters?
That's great, your question point me sections in the docs that was very unclear/undocumented, thanks haha !

Firstly, interruptFlow is the Arduino interrupt number (equivalent to pin number) that the sensor is connected. For more information : http://arduino.cc/en/Reference/attachInterrupt
For ex, if sensor is connected to pin 3, interruptFlow = 1

Secondly, i did not implement functions to shut off heater when flow measurement is incorrect...It is displayed on the screen if it is ok or not (between 2 to 4 L/min i think) and if a speaker is added, it will ring if it is incorrect...I did not want to block the whole process. I'm a bit hesitant on that...maybe it would be safer...I don't know what's your opinion on that ?

 
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Old 06-26-2013, 05:38 AM   #20
atoughram
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Allthough I've never had a stuck flow on mine, having the option to shut down the heat if the flow stops would be nice. But - It doesnt have to be coded in the library. If there was a function called heatEnable(binary enable) to turn the element off. It appears that we can read the flow and do math or make decisions on it in loop().
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On tap - SAMM I am IPA 1.069

 
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