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Home Brew Forums > Home Brewing Beer > DIY Projects > Kegerators and Keezers > [Version 2 Release] RaspberryPints - Digital Taplist Solution
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Old 12-18-2014, 08:10 PM   #801
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The short answer is yes it will do it, but you'll have to make some changes to the code (what those are I cannot say).

The swissflow meters were used for several reasons, one, they're the most accurate ones available. Two, they're food grade. Three, there's already another system (kegbot) thats using them.

The meters on adafruit's site are an unknown.

We do not know if they are food grade (one could "almost" say that at the price they are selling them for its questionable), the pulse per liter on them is ~450 pulses per liter where the swiss flow is set to somewhere around 5600 pulses per liter (if my memory is correct, I did the math 6 months ago). Also the accuracy of the swissflow is a lot greater than the adafruit.

We do not support the adafruit meter (we'll help out, but we're far more knowledgeable about the swissflow ones).

This topic has come up with in the last several posts as well and I *think* someone was going to try it....
Well, the price is definitely more. I'll keep my eyes peeled for some on ebay or on HBT. I'd love to monitor volume, but not sure I can hide another 300-400 from the wife.

That being said, I did find the Parts list and tutorial on the RP site, so that'll make things easier.

I'll put it on hold and maybe start with 1 on meter and then expand from there. Thanks for the input. The SwissFlow does seem much better and worth the money.
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Old 12-18-2014, 08:14 PM   #802
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I'll put it on hold and maybe start with 1 on meter and then expand from there. Thanks for the input. The SwissFlow does seem much better and worth the money.
The nice thing is that the system works with or with out them.

You can find them on ebay every so often (I think we drained the one guy selling the refurbs) but it is worth the wait.

They work well and are pretty damned accurate.
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Old 12-18-2014, 08:17 PM   #803
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The nice thing is that the system works with or with out them.

You can find them on ebay every so often (I think we drained the one guy selling the refurbs) but it is worth the wait.

They work well and are pretty damned accurate.
Yeah.. objective #1 is just getting the kegerator built. Then I'll probably start small with 1 meter.

I assume 1 AlaMode Board can support multiple flow meters?
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Old 12-18-2014, 09:12 PM   #804
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Yeah.. objective #1 is just getting the kegerator built. Then I'll probably start small with 1 meter.

I assume 1 AlaMode Board can support multiple flow meters?
I think the basic setup with the rpi and the alamode will do 8 or so meters without issue.

We're working on expanding that with an additional board.

Most of us are running between 3 to 5 (I have four...)
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Old 12-21-2014, 11:32 PM   #805
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I'm SO close.. but when I got to tap a keg, I can select the beer and keg number but it doesn't actually get displayed. It just goes back to my tap list screen where nothing has been updated. Any ideas?

Edit: Somehow missed version 2.0.1. Awesome!

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Old 12-23-2014, 02:23 AM   #806
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I'm beginning to try something new. I was reading back into some of the previous posts and saw that someone was able to install "Pianobar" to allow Pandora to play in the background of Rpints. Since then, I've installed Pianobar and my Pandora is working just fine. However it's kind of a pain in the butt to start it and stop it since I need a keyboard/mouse and I never have mine hooked up anymore thanks to Putty/WinSCP. I thought it would be really cool to be able to cue Pandora to begin off of Day_trippr's PIR sensor mod. I don't want Pandora to be playing all the time since my Pi runs 24-7 so I was hoping there would be a way to start/stop it when someone enters/leaves the room. Because of that, a line of code in the "autostart" directory wouldn't be ideal for me. I found some instruction on Google from someone who has done something similar but of course, it didn't work when I attempted it.

http://http://www.instructables.com/...y-Pi/?ALLSTEPS

I did notice that in their instruction, the sensor is plugged into a different GPIO port. They use #25, where mine uses #7. I made the correction in their supplied .py file but it still didn't work. I'm not giving up hope but i'm curious if someone can steer me in the correct direction, or if it is even an option. Thanks in advance!

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Old 12-23-2014, 05:25 AM   #807
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I'm pretty beat but if I get a chance I'll take a closer look at that python script.

But first glance reveals that it polls the PIR on a ~1 second interval, where my code is interrupt-driven. May not be a problem - I actually have never looked to see how quickly the PIR negates its output after a trigger. So that's two things I'm curious about now

Anyway, as long as the PIR output is connected to pin 22 and the script is running something should happen.

To debug this, remove any autostart or cron entries related to the python script, and then run the script in a terminal. The code will print "motion detected" when it "sees" movement...

Cheers!

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Old 12-23-2014, 07:59 PM   #808
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I've had the PIR set up on my Pi for a few months now. Works exactly the way it's supposed to. I have my screensaver set to turn on after one minute of no movement detected since my keezer is in a room that doesn't see a lot of foot traffic. So because of that, it would lead me to believe that the issue is that the command to start Pianobar from the PIR somehow got screwy. I'll look at it again when I get home tonight.

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