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I'd like to see your script:) So if I'm understanding correctly, your script uploads the brewpi data every 5 minutes to the plot.ly servers so that you don't need to open up your firewall. Right?

FWIW, I have never had any problems recirculating with BIAB. I use a false bottom to keep the bag off the bottom of the kettle and strain hops from the boil, and the pump that I use is one of those cheap tan pumps that only outputs about 1.7 gpm.

Great work and thanks for sharing! My project was never intended to be a one size fits all type of application. It was tailored to fit my hardware and function the way I wanted it to. I commend the way that you took it apart and and made it your own by tailoring it to your needs. You've got a...

I'm in. Thanks

I used an RC servo motor to control the valve on my propane regulator with a raspberry pi. The main purpose of my servo is to control the mash temp. I have a setting in my program that sets the position of the valve at a fixed point during the boil. However, I have found that my boil off rate...

There is an article in the October issue of BYO that goes over various ways of using dark grains while brewing. One of the methods was to hot steep the dark grains in 165F water for 5 minutes, filter or strain the mixture, then dump the grain extract directly into the fermenter without boiling...

It sounds like your setup is fairly similar to mine so it wouldn't be too difficult to adapt my program to fit your application. You would have to delete all of the servo specific code that I am using and write some PWM (pulse width modulation) code that would control your heating element. I...

Thanks for your interest. Unfortunately, I did not make this project with flexibility in mind. I tailored the software to fit to my specific hardware. I tried to make the code in a modular fashion so that it could be modified easily. But this was my first python and html project so I am no...

I've been lurking in this thread for a while now and finally completed my build. My craigslist fermentation fridge came with a built in project box and fan:) I hacked the avr code to keep the fan on continuously as long as the BrewPi is not in off mode. Big thanks to Elco for sharing this...

Thank you HopHouse!

FWIW I just set the cooling shrinkage to 0% in my equipment profile. I think that the 4% cooling shrinkage is only useful if you measure your volume while boiling with a sight glass, kettle markings, etc.

I hate to be a naysayer, and I think bubblers are great for volume measurements. However, I think that you should do some preliminary calcs before you go too far down this road. I don't think that you will be able to get the resolution that you are looking for. Even if you place the...

I am not familiar with the Click PLCs but the ladder logic / relay logic should look something like this.

It looks like mouser.com has them in stock. They have the right part number but the description isn't quite right. Alternatively, you could try and get a sample directly from maximintegrated.com. It looks like they only make them in the TDFN (Thin Dual Flat No Leads) package that is kind of a...

I looked a little further into flame rectification, and it looks like it would be fairly difficult to implement. About 30VAC is placed on the flame sensor and then DC microamps are measured off of the burner (ground). I looked around a bit for an off the shelf flame rectification module but...

I looked up thermopiles and it looks like they consist of multiple thermocouples configured to produce a greater voltage than a single thermocouple. I think that they would be the best choice if we were going to design a circuit that would interface with the gpio. However, I think that the...

I think that the cheapest and easiest flame sensing idea would be the 1-wire + thermocouple idea. My only reservation is whether or not they can withstand the prolonged exposure to the burner. I've had to replace one on my hot water heater that was only on the pilot light. On the other hand...

Where is the thermopile mounted on your brinkmann? Is it directly in the flame?

I like this idea, I might go the hot surface ignitor if I was to do it again. The EMI mostly causes issues with low current signal lines. Like I said before, I have only seen issues on my LCD and 1-wire bus. The 1-wire bus is no longer an issue since I narrowed the spark gap, and stopped...

The spark module can either be energized automatically or by a manual push button on my control panel. It gets energized for about 3 seconds every time the program turns the burner on. The burner is turned on and off several times throughout the brew program. For example, I programmed it to...