BrewPi - Fermentation control

[N3MIS15]

The PID control is self learning, so over a few days you will see that graph get much tighter.

 

[gezzanet]

Been running one for many brews. I use a thermowell in 25 litre fermentor. I notice the control is +/- 0.1 c when active fermentation is on and wort is swirling around. Prior to and after this the control is +/-0.15C. fridge in shed and the ambient has swung 18-45 deg c. Great little device.

 

[SBOB]

can anyone tell me what version of the raspberry pi is needed?

Already have an Arduino Uno (from an STC1000+ upgrade project) so this should be an easy/fun project to try..
RS Online has the following with free shipping and seems to be one of the cheapest with their free shipping?
Raspberry Pi B+ for $30.94ex
http://au.rs-online.com/web/p/processor-microcontroller-deve...
Raspberry Pi 2 B for $48ex
http://au.rs-online.com/web/p/processor-microcontroller-deve...

 

[MastersBrewery]

Either will work, though if your running multi instances and other stuff (raspberry pints etc) the Pi2 is the way to go

 

[SBOB]

Either will work, though if your running multi instances and other stuff (raspberry pints etc) the Pi2 is the way to go

Thanks
Planning on using it just for this.. no keg setup yet
Might save the ~$20 and just get the B+ (seems to be commonly mentioned in the diy build thread http://www.homebrewtalk.com/showthread.php?t=466106)

Seems even the older A+ would work, but they cost about the same so a B+ should work

 

[kaiserben]

can anyone tell me what version of the raspberry pi is needed?

Already have an Arduino Uno (from an STC1000+ upgrade project) so this should be an easy/fun project to try..
RS Online has the following with free shipping and seems to be one of the cheapest with their free shipping?
Raspberry Pi B+ for $30.94ex
http://au.rs-online.com/web/p/processor-microcontroller-deve...
Raspberry Pi 2 B for $48ex
http://au.rs-online.com/web/p/processor-microcontroller-deve...

That's the best price I've seen on the Pi 2 B.

I'm currently trying to make one operate as my brewery system controller and data logger (without a need for arduino) and it looks promising. Even more promising is that the Pi Zero (~$20) - in theory - should also be able to do the job (but they're sold out and everywhere is waiting on further stock).

 

[kaiserben]

^^^ Turns out that price on the Raspberry Pi 2 from RS is before GST (which is added in the shopping basket stage). I suppose free shipping evens things out there.

 

[SBOB]

Yeah...
Ended up getting b+ from rs online... They were also well priced on a 2a/10w power supply ($8)and case ($4), so grabbed those also...