[Version 2 Release] RaspberryPints - Digital Taplist Solution

[RandR+]

Unless you really want to change you beer line, i would get the flow meters with male pipe thread and then get a fitting for 3/16 barb to Female Pipe Thread. This method leads to more connections to manage.
Depending on the tubing, maybe a lot of effort you could get the 3/16 ID over a 1/4 barb. But if its too much work it may lead you to not want to do it down the line. I would get a barb or push in fitting that fits the line you are using to make it easier to change out in the future.

Barb Fitting examples: https://www.amazon.com/PATIKIL-Plastic-Fitting-Adapter-Connector/dp/B0DJW79P54?th=1h=1
Meter examples: https://www.amazon.com/GREDIA-Conne...se&keywords=GREDIA&qid=1752174762&sr=8-5&th=1

 

[day_trippr]

fwiw, when I started using the SF800s in the summer of 2014 once Raspberry Pints support for meters came out, I was using the industry standard solid PVC tubing - Bevlex 200 in 3/16" ID, 7/16" OD. I used JohnGuest 3/8" BSP to 3/8" OD fittings on both sides of the meters, then used a 1/4" Barb to 3/8" stem, JohnGuest part number PI251208S, on both sides as well.

Back in 2019 I switched all of the tubing in my brewery to EVABarrier, using 4mm ID/8mm OD for beer and water lines. I basically switched out the old PI251208S barbed stems for PI061210S push-to-connect stems.

Here is a diagram using EVABarrier 8mm OD tubing including the part numbers for the JohnGuest fittings I used for the SF800 meters...

Cheers!

 

[DuncB]

@emersonvier
I would consider changing your beer line. You will get a great advantage from changing to EVA barrier @day_trippr has also mentioned the benefits of this in the past.

I see you got there before me.

 

[emersonvier]

Thank for all of you to provide usefull information.

I agree to change my beer line to EVA 5mm ID/ 8mm OD, but I need to know if this EVA will fit on my Keg connector, please see the picture.

 

[DuncB]

Your current beer line has a 3/16 which is 4.7 mm and the EVA barrier is 5mm so yes it should fit.
You could change that metal bit for a JG fitting that screws on and has a duotight / push fit connection.

As mentioned above if you get a short length of 9.5 mm external that will plug directly into the flow meter on one side and then just use an adapter as mentioned by @day_trippr to then plug in the 8mm external.

 

[day_trippr]

That beer fitting on the keg coupler uses the same thread as a standard faucet shank - so the same 5/8 BSP to 5/16" tubing connector I show in my diagram above can replace the swivel nut assembly, providing a push-fit for your 8mm OD tubing.

Cheers!

 

[DuncB]

and then adapters to fit that tubing in and out of the flowmeter.

 

[emersonvier]

I am here again, and thank for all off you for help
So, I bought all connection/adapter/beer line recommend by @day_trippr .

Now I am working on electronic parts, about Raspberry PI 4B, what is the recommendation for memory 4GB or 8GB?

Thank you!

 

[RandR+]

what is the recommendation for memory 4GB or 8GB?

assuming you dont plan on doing anything else with the PI, 4gb is more than enough for RPints.

 

[emersonvier]

Looking other options, this here is 1-2 Months lead time.

 

[DuncB]

Re raspberry pi 4 I've got an 8Gb one and it runs pints, 8 flowmeters via the base shield, I can watch youtube videos in 1080 and also watch media on kodi at the same time.
The pi 3 could not do this.

 

[emersonvier]

@Benjamin Carlisle
Can you share valve PN/Model.

 

[day_trippr]

Looks like two solenoid valves on that one run?

Cheers!

 

[DuncB]

Looks like solenoid with flowmeter following on left,
Separate solenoid then flowmeter ready in the middle and then all I can see on the right is a solenoid but there are similar wires emerging behind the solenoid on right that to the ones coming out of the other two flow meters.

 

[day_trippr]

I missed that there are two lines converging on the right.

 

[emersonvier]

An explanation of the way I have the RFID and the untappd integration working....

On my rpints setup, I have 4 taps with flow meters. These are hooked up to my alamode and pi. In addition, I have a 5th "device", a simple RFID reader that is hooked up to the alamode as well.

The user swipes their rfid fob in front of the reader and then pours a glass of the beer they want.

The system then updates, puts the user ID, amount poured and beer poured in to the pours table and then refreshes the screen.
At the time it puts the info in the table, it then updates untappd using the untappd API.

You can see the feed at: https://untappd.com/SkyPainterBrewing
which is my brewery's untappd page. Anything that says poured with love by @raspberrypints was poured through the rpints system.

To add a user at the moment, I have to kill the rpints monitor, launch a serial connection on the pi to read the input from the rfid and read the code off of the fob. Then I manually enter it in to the database, restart the flow monitor and the user is set.

Its a PITA to add a user with a fob at the moment. Its also a PITA to link the user on the rpints site to the untappd site.

If I can work out adding the user and RFID Fob and linking to Untappd I'd release a "beta" version of this code....

It truly is a thing of beauty when I pour a pint and I get a twitter notification that @mcangeli mentioned @skypainterbrewing on twitter.

The message could be changed to whatever you want.... at the moment, thats hardset in the code, the only thing that changes is the user and the beer, but that could be set in a database field and made updateable.

Mind you, this is all down the road.

There are other things that we put off to get out the flow meter release that I *should* be working on... hope to get a chance soon, a V2.5 should be out sometime before 2016

Hi mcangeli please share the RFID reader are you using, tks

 

[RandR+]

Rpints is developed to inteferface with Mifare Rc522 reader. The one i bought is no longer available but its like this one
https://www.amazon.com/HiLetgo-RFID...3.56mhz+14443a+mifare+rc522+rf,aps,221&sr=8-2

 

[day_trippr]

Mcangeli hasn't been seen around here since 2014. And in any case unless you are running a very old version Raspbian OS (eg:Wheezy or Jessie or maybe Stretch) you can't install the original RaspberryPints any more. Thankfully there is the @RandR version...

Cheers!

 

[emersonvier]

I am taking baby steps here.

RP 4B + Uno R3 + Flow Sensor connected.

Blowing the flow sensor, I saw the number change on the Pint screen.

Where is the place to adjust the pulse per/Gl? See my Flow Meter below.

And here my first set up

 

[RandR+]

in the admin Display on the taps screen. there is a check box on top that says Show Pin Settings. That shows the Count per gallon.

There is also a calibrate button per tap. that will allow you to see the last pour information then adjust the actual pour volume. that will adjust the count per oz. I suggest doing 1 then coping the value to the rest unless you really have different meters or flow rates

 

[emersonvier]

in the admin Display on the taps screen. there is a check box on top that says Show Pin Settings. That shows the Count per gallon.

There is also a calibrate button per tap. that will allow you to see the last pour information then adjust the actual pour volume. that will adjust the count per oz. I suggest doing 1 then coping the value to the rest unless you really have different meters or flow rates

Thanks again, as I haven't assembled everything yet I can't adjust it yet.

 

[emersonvier]

Rpints is developed to inteferface with Mifare Rc522 reader. The one i bought is no longer available but its like this one
https://www.amazon.com/HiLetgo-RFID-Kit-Arduino-Raspberry/dp/B01CSTW0IA/ref=sr_1_2?crid=1TLE3NLO5W1N2&dib=eyJ2IjoiMSJ9.nqUZKS4qM9_92di-whBaTQHAWXh-lIfQW54adUxRjQMk1zXMqs7XlxhNrGYjmsIxaMdkyBtKPqsRtmQzsYRs3zzzaJfJZNHObRtCZNSTbKFh946B3Ddlacz4zHgWv_wUH7on7GUP7BfcmuVJfQvNhlVNlZdaSECMH5WQS5GKs5O7tuW69Rvqm-RFRyUcgkxH3KQLbPxBgGFGmywnBRZSlz_SC8pQ2_GJag9oSLGGwVs.xk286TMijtXFL30tjG9pXxVfhsbbUl7NFCnF3PjrPTw&dib_tag=se&keywords=Mifare+Rc522+Card+Read+Antenna+Rf+Module+Rfid+Reader+Ic+Card+Proximity+Module/13.56mhz+14443a+Mifare+Rc522+Rf&qid=1753121658&sprefix=mifare+rc522+card+read+antenna+rf+module+rfid+reader+ic+card+proximity+module/13.56mhz+14443a+mifare+rc522+rf,aps,221&sr=8-2

I bought this one, but I can not find the directions about where I need to connect it, on Raspberry Pi or on Uno R3, someone can help me here please and thank you.

 

[RandR+]

the board should have each pin position labelled
a standard connection is like this
SDA --> 24

SCK --> 23

MOSI --> 19

MISO --> 21

GND --> 6

RST --> 22 (this can be any regular pin but whatever pin you put it on needs to be configured in RPints)

3.3V --> 1

 

[emersonvier]

RFID Qustions

What is the Mug Id?

Where I find the RFID TAG?

 

[RandR+]

What is the Mug Id?

Where I find the RFID TAG?

Mug Id is for places that offer a mug club. more of info field then anything

If there are RFID that were read but not assigned they will show up under the RFID textboxes as unassigned RFID in a drop down.

If you dont see them check /var/log/rpints.log for errors. You may need to change /python/Config.py

config['flowmon.debug' ] = False#True
to

config['flowmon.debug' ] = True

then restart the flowmon service and check the log again

 

[emersonvier]

Mug Id is for places that offer a mug club. more of info field then anything

If there are RFID that were read but not assigned they will show up under the RFID textboxes as unassigned RFID in a drop down.

If you dont see them check /var/log/rpints.log for errors. You may need to change /python/Config.py

config['flowmon.debug' ] = False#True
to

config['flowmon.debug' ] = True

then restart the flowmon service and check the log again

Where can I find the the file /python/Config.py

 

[RandR+]

it will be in your <WWWROOT> folder
So mine is /var/www/html/python/Config.py

 

[emersonvier]

it will be in your <WWWROOT> folder
So mine is /var/www/html/python/Config.py

I need to pay you a beer when I have this running

please see below

sudo raspi-config -> Interfacing Options ->P4 SPI ->enable ->sudo reboot

 

[RandR+]

my guess is that SPI didnt install/get enabled correctly on the pi.

try this:
https://www.raspberrypi-spy.co.uk/2014/08/enabling-the-spi-interface-on-the-raspberry-pi/

 

[emersonvier]

RFID Woking now

Next challenge VALVE/SOLENOID

1) I chose pin 8, is it on Alamode(Arduino R3) or Raspberry Pi board?

2) I clicked "Let it Flow" changed to "Stop Flow" but when I save, it is back to "Let it Flow"