Grainfather

[fishjam45 (Colin)]

Here's a good one too

[Simon_]

Will, what do you think about cleaning the GF?
Saw this where the designer said PBV would be fine. Do you think Oxy would be an alterative?

[Will_D]

I think the GF comes with a pack of cleaner. This 'should' state whats in it. When I get hold of it I will see what's what.

But as he says PBV will work Ok

BTW: What IS PBV ??

[Jacob]

BTW: What IS PBV ??

This might be a typo. It's probably PBW.

[Simon_]

Facebook group with existing users. Private group so you need to request to be added. Really interesting to see manufacturer improvements reaching users and user mods

One guy is running a modded STC1000 but apparently there is a different pid implementation from the same developer (Matts). I think the difference from the usual STC1000+implementation being that it beeps at you for the strike water / hop addition steps

The STC1000 slots in easily in place of the STC200

[Simon_]

There have been alot of recent manufacturer modifications on the re-circulation arm
The addition of the red ball valve on the recirc pipe
improved thread on the twist on fitting above the red ball valve
2nd support bracket holding the arm to the body
hose clamps where there were zip ties before where it meets the pump

These upgraded GFs are the ones being delivered in UK and Europe now

[fishjam45 (Colin)]

Great!
Looking forward to getting it now

[Acott]

I shouldn't of looked at this thread, the argument of want vs. need has arisen!

[Simon_]

Here's the modded stc1000 firmware especially for single vessel brewing
https://github.com/matsstaff/stc1000p-ovbsc/blob/work/README.md

So with this you can wake up just in time to mash in and then forget about it until you get prompted for the hop additions.

[molc]

Pretty cool. I would be interested in trying it into a brewpi spark as well, for a shiny touchscreen interface. The big thing is what is the control loop like on the grainfather? Is it just a simple breaker circuit for the element that's wired into the stc? Also how is the pump controlled?

[armedcor]

Pump just controlled by an on/off switch I think

[Simon_]

The link above says

The unpopulated terminal on the STC can be used as pump control. The firmware will put this output in high impedance to turn pump on and pull it low to turn pump off.

Alternatively I think it makes little difference if it's just a manual step. You turn on the pump when you mash in and turn it off when you mash out. You need be present for those steps anyhow so there isn't much benefit to automating it

[johnrm]

Here's the modded stc1000 firmware especially for single vessel brewing
https://github.com/matsstaff/stc1000p-ovbsc/blob/work/README.md

So with this you can wake up just in time to mash in and then forget about it until you get prompted for the hop additions.

Really cool.
I knew matstaff was working on this but did not know it was delivered.

[Will_D]

Come the next "wet day" I am going to flash up the OVBSC Version and see "how she's cutting"

Might even do up a user manual for Matts as a thank you!

That puts my Arduino "stepper motor to motorise my new mill's x-axis" project on hold a bit longer 

Note to self: The dinning table is supposed to be for eating off! It's NOT your Arduino H/w / S/w playground!

[Simon_]

Might even do up a user manual for Matts as a thank you!

Or an instructional video - WillTube