BrewPi is a Raspberry Pi in charge of beer fermentation

Take a look at BrewPi, a fermentation controller made with a Raspberry Pi. The project hacks control of a refrigerator and a light bulb into the pervue of a Raspberry Pi board. The RPi itself brings network connectivity to the mix. What you end up with is an already highly configurable fermentation system which is perched to receive even more features moving forward.

The man behind the system is [Elco Jacobs]. You may remember his name from the UberFridge project. That was a router-based fermentation controller. This keeps the same great hardware as well as online graphing and control features such as setting plot points for ramping temperature up and down. For now there’s also an Arduino being used which takes care of the hardware switching via json packets received from the RPi. But now that he’s worked out most of the bugs it should be fairly painless to dump the Arduino and build a proper RPi shield for this purpose.

Brewing beer with LEGO

[Matt] sent in a set of YouTube videos walking us through his LEGO Mindstorms controlled brewery.

[Matt] is using a RIMS brewing setup that recirculates and heats the mash to extract more starch from the grain. This results in a Maillard reaction in the mash and creates a richer, maltier flavor.

To control his RIMS setup, [Matt] is using a LEGO Mindstorms brick with a few LEGO temperature sensors attached to his plumbing. The LEGO provides all the temperature and pump control for a proper RIMS setup, perfect for the homebrewer who doesn’t want to bother with an Arduino or other microcontroller board.

As a small aside, the astute Hackaday reader will note our beer hacks category is woefully underpopulated. It’s nearly summer now and the perfect time to start brewing. If you’ve got a beer hack, be sure to send it in.

After the break you can see all of [Matt]‘s RIMS/LEGO brewery videos, or you can check out his YouTube channel.

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UberFridge helps keep beer production going through the dog days of summer

uberfridge

[Elco Jacobs] used to let his beer ferment in the kitchen, but when things got too hot over the summer, he had to suspend his ale making for a few months. Not wanting to have to put production on hiatus again, he modified an old refrigerator into an awesome fermentation unit he calls the UberFridge.

The refrigerator features two temperature sensors, one that sits in the fermenting beer, and one that measures the temperature of the fridge. This dual probe setup offers him the ability to closely monitor the fermentation process, which he does via a sharp-looking web interface.

An Arduino serves as the PID controller, talking to a wireless router via a serial connection. The Arduino logs and relays data to the router where it can be viewed via a web browser. Not only can he keep tabs on what’s going on inside the fridge, he can reprogram the Arduino via the web interface as well.

Keep reading to see [Elco] explain the ins and outs of his UberFridge – we’re pretty sure you’ll want to build your own after you do.

[via BuildLounge]

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Fermentation temperature control

[Eric Friedrich] needed to keep the wort warm enough for yeast to ferment it into beer. To solve the problem he built his own fermentation temperature controler using a microprocessor to turn some heating tape on and off. You can see the heating element embracing that diminutive fermentation bucket in the picture above. This was originally meant for keeping reptile cages warm. It costs less than similar products meant just for brewing and works well for [Eric]. A DS1820 temperature sensor gives feedback to an ATmega168 which then uses a relay to switch the heat on and off. The target temperature can be changed using a potentiometer on the board, with the setting displayed on a character LCD screen on the project enclosure.

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