Open Ardbir - Open source platform for brewing process control and automation

[pob]

Be patient.

Wait until you are holding them in your hand, measured twice before cutting any holes.

Nothing worse than cutting bigger than needed & ruining an enclosure. Never presume all connectors are same size especially if a copy from Ali or eBay.

[darren996]

Be patient.

Wait until you are holding them in your hand, measured twice before cutting any holes.

Nothing worse than cutting bigger than needed & ruining an enclosure. Never presume all connectors are same size especially if a copy from Ali or eBay.

Too true... thanks

[Will_D]

Just been going through the setup menu.

I was a bit surprised that the Temperature offset was set at +5C in the code.

Does this mean that the other parameters need a bit of tunning?

If so what are the suggested PID parameters etc for a grainfather application!

[molc]

Yeah the offset is bonkers if you don't change it. I was doing an ice water calibration of the probe when I noticed it! For my first use, I used it side by side with my BrewPi sensors to make sure it was working somewhat reliably.

For my setup, I'm using the following PID values:

• P: 100
• I: 20
• D: 5

This is based off the values posted by Pob before. Everything stayed in the correct range with these with no real swings or variances during the mash. I don't expect the Grainfather to be much different, especially one as insulated as yours.

[Will_D]

Cheers Colm! 

[Leann ull]

How are these optimised as a regular pid learns?

[pob]

The PID values would have been originally calculated & tuned from the PID libraries.

Then updated from experience.

The PID adjusts as it heats = learns?

[johnrm]

I bench tested mine.
Really cool bit of kit.

[darren996]

Anyone source a threaded ds18b20 probe ? I see brewpi have a threaded onewire probe but I am not 100% that this is compatible

[molc]

It's compatible. I wired a phone port to the correct pins and it worked fine. Note they're in a slightly different order in brewpi. It's great now though, as I swap sensors depending on what I want to control against.

[darren996]

It's compatible. I wired a phone port to the correct pins and it worked fine. Note they're in a slightly different order in brewpi. It's great now though, as I swap sensors depending on what I want to control against.

Cool..thanks going to order one there now

[Will_D]

Any one got any info on what to do with the free Nano board that was shipped?

It looks like it has double the capacity ( ie 2 pumps, 2 DS1820s, 2 heater drivers etc)

I assume there is more info on the web but so far can't find it!

[molc]

It's for an arduino nano. The extra etched lanes support 2 12v circuits and 2 temp probes,  but there's no update written for the ardbir firmware to use that. They have a "plan" but it was delayed for the grainfather work and they haven't said what it is.

[Will_D]

It's for an arduino nano. The extra etched lanes support 2 12v circuits and 2 temp probes,  but there's no update written for the ardbir firmware to use that. They have a "plan" but it was delayed for the grainfather work and they haven't said what it is.

Cheers Colm for that.

However my point is what about the hardware need to populate the board? Someone must know what the descreets are? Agreed the software comes later but there has to be a hardware design somewhere!

No populated board equates to "no software developement"!

[molc]

Check out the github. I know I saw a full parts list for it before and catalogued it in the "must look at later" section of my brain