Brewing

A brewing controller based on a raspberry pi, custom pi hat, and crow library for web interface.

Setting up the pi

Clone the repo using ssh. see below links for setting up ssh:

https://docs.github.com/en/authentication/connecting-to-github-with-ssh/using-ssh-agent-forwarding

https://docs.github.com/en/authentication/connecting-to-github-with-ssh/working-with-ssh-key-passphrases

after cloning, cd into the cloned directory and make.

can use make mock all to not use wiringPi and instead use mock interface.

Will almost certainly need to autostart the web service; can add a line to sudo crontab -e like:

@reboot sleep 60; cd /home/admin/Brewing && ./build/apps/run_brewery >> serverexec.log

Also be sure to set up gpio by adding a line to /boot/config.txt like:

dtoverlay=gpio

Brewery Plumbing Design

Hardware Connections

1-wire/i2c:

Aviation Pin	Connection	Color
1	ground	black
2	power	red
3	signal	green

3 way valve (cr02 wiring):

Aviation Pin	Connection	Color
1	close	blue
2	open	brown/red
3	ground	yellow

Hall-effect Flow Meter:

Aviation Pin	Connection	Color
1	ground	black
2	power	red
3	signal	yellow

Heater:

TRS Jack	Connection	Color
Sleeve	ground	black
Ring	power	red
Tip	signal	yellow

Breakout Board