jeager2 / maverick

Raspberry Pi BBQ Monitor for the Maverick ET-732

Use a Raspberry Pi to monitor Maverick ET-732 temperature readings and provide an interface to access that information.

Back end software (maverick.c) sniffs the 433mhz radio signal from the Maverick ET-732 (and likely other models), which transmits temprerature readings every 12 seconds, and stores those readings to a sqlite3 database. Front end software (php on nginx) provides an interface to start/stop cooks, manage cook related information, and view temp gauges and graphs

Software:
web server - nginx
DBMS - sqlite3
interface - php7-fpm
433mhz sniffer/parser - C

Hardware:
Raspberry PI
433mhz receiver (http://a.co/fe3oOx3)

GPIO Pinout (physical pin numbers):
2 (5v) - to 5v pin on receiver
6 (GND) - to GND on receiver
8 (BCM14 TXD) - to DATA on receiver

Install steps as of 3/2018 (Raspbian stretch lite version November 2017) (work in progress):

1. update, dist-upgrade
2. sudo rasp-config, usual setup, then 5 - Interfacing Options, P6 - Serial, No, Yes
3. sudo apt-get install git
4. git clone https://github.com/eightywon/maverick
5. git clone git://git.drogon.net/wiringPi, cd ~/wiringPi ./build
6. sudo apt-get install libsqlite3-dev, sqlite3
7. sudo apt-get install nginx
8. sudo apt-get install php-fpm, configure for nginx: https://www.raspberrypi.org/documentation/remote-access/web-server/nginx.md
9. sudo apt-get install php-sqlite3
10. sudo visudo, add "www-data ALL=(ALL) NOPASSWD: /var/www/html/maverick.sh, /bin/kill" as last line
11. copy html files to /var/www/html/
12. sudo sqlite3 -init maverick/db.script /var/www/html/the.db
13. gcc -o /var/www/html/maverick maverick.c -lwiringPi -lsqlite3
14. Create bbq_user.txt and bbq_pass.txt in /var/www/ and use this tool to create user and pass: https://bcrypt-generator.com/. Enter your username in "string to encrypt" and click "Hash!" Paste that into bbq_user.txt. Then do the same for your password and enter in bbq_pass.txt

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links/research/notes (not maintained): http://forums.adafruit.com/viewtopic.php?f=8&t=25414
http://wiki.openpicus.com/index.php?title=Wifi_bbq
http://www.raspberrypi.org/phpBB3/viewtopic.php?f=37&t=29650
http://www.raspberrypi.org/phpBB3/viewtopic.php?p=252739#p252739
http://openmicros.org/index.php/articles/94-ciseco-product-documentation/raspberry-pi/283-setting-up-my-raspberry-pi
sending and receiving via UART with minicom
http://www.raspberry-projects.com/pi/programming-in-c/uart-serial-port/using-the-uart
try this too http://www.raspberrypi.org/phpBB3/viewtopic.php?f=63&t=32953
http://elinux.org/Serial_port_programming
pic of pinout
http://eclipsesource.com/blogs/2012/10/17/serial-communication-in-java-with-raspberry-pi-and-rxtx/
right dev and pins to use
http://raspberrypihobbyist.blogspot.com/2012/08/raspberry-pi-serial-port.html
good stuff
http://ninjablocks.com/blogs/how-to/7506204-adding-433-to-your-raspberry-pi
http://www.raspberrypi.org/phpBB3/viewtopic.php?t=53425&p=408648
For later
http://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/temperature/
http://www.raspberrypi.org/phpBB3/viewtopic.php?p=237517#p237517
http://www.raspberrypi.org/phpBB3/viewtopic.php?f=37&t=29650
compiling with mysql headers
http://www.raspberrypi.org/phpBB3/viewtopic.php?t=31394&p=393917
session control - how to recognize when the maverick is turned off between smokes and start a new session
improve front-end - graphs, bbq-like temp gauges
how often to log to db? every time sniffed? once per minute/half minute? average all sniffs or just log most recent?
clean up code
http://stevenhickson.blogspot.com/2013/05/using-google-voice-c-api.html
http://forum.arduino.cc/index.php?topic=22052.0
http://www.tutorialspoint.com/sqlite/sqlite_c_cpp.htm
https://developers.google.com/chart/interactive/docs/php_example?csw=1
https://github.com/BjoernSch/MaverickBBQ/blob/master/maverick.py
https://forums.adafruit.com/viewtopic.php?f=8&t=25414&start=15
https://hackaday.com/2015/03/25/logic-noise-filters-and-drums/#more-150438
http://raspberrywebserver.com/sql-databases/set-up-an-sqlite-database-on-a-raspberry-pi.html
https://www.raspberrypi.org/documentation/remote-access/web-server/nginx.md

to allow pi to send alerts install postfix SMTP program and set up relay through comcast mail server like - http://forums.xfinity.com/t5/E-Mail-and-Xfinity-Connect-Help/Mac-OS-X-Proper-postfix-configuration-for-SMTP/m-p/1092577#M191652

launch from terminal- $sudo /var/www/html/maverick > ~/maverick.log &