HOMEBREW Digest #5567 Thu 11 June 2009


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Contents:
  Re: Bubble Logger (Natalie Hirneisen)

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---------------------------------------------------------------------- Date: Thu, 11 Jun 2009 15:23:08 -0400 From: Natalie Hirneisen <cave.natalie at gmail.com> Subject: Re: Bubble Logger The Bubble logger is a interesting idea. Here are some thoughts I was pondering. Matlab or equivalent needs a PC to run on, To reduce the hardware, maybe try a dsPIC (a microcontroller) from Microchip to take care of the signal processing and log the bubble events. Digikey has an evaluation kit for the dsPIC for about $60 that connects to the USB port on your PC and has a mic amp + AtoD built in. When done fermenting, one could just download the data from the device flash memory. One could also connect an I squared C temp sensor to the processor to log temp and how that changes the bubble rate. Another thing, normally a blow off tube is needed the first few days of fermentation, maybe a specialty designed high capacity airlock would help? regards, Natalie > Date: Tue, 9 Jun 2009 14:14:16 -0700 (PDT) > From: Matt <baumssl27 at yahoo.com> > Subject: Cheap and Easy Bubble Logger > > > Airlock bubbles are a fun and potentially useful way to > look at fermentation, and various automatic bubble-logging > systems have been devised (see HBD archives, various web > sources). For those of us familiar with MATLAB, here's an > idea for *extremely* cheap and easy bubble logging: > snip Return to table of contents
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