# internet-of-shit
Arduino and RaspberryPi project to measure, track and calculate poop volume (and distance) in a tank.
Many houses are connected to sewers and don't have to think about this but if you have a closed system that needs to be emptied once in a while (depending on usage) this might be useful. It may not be the most important issue to solve but if you forget to empty you tank of poop you might end up in deep shit (literally speaking). With an ultrasonic sensor and an Arduino kit I tried to solve this in techie way. An easy solution would be to lift the lid once in a while but then you can't get the data, statistics, tracking and all other things that comes with an automated solution.
This repo contains two versions.
- A Python version for RaspberryPi that connects to a Domoticz home automations system for tracking, notifications and other funcionality.
- An Arduino version that measures and reports to a serial port.
I use the library NewPing for controlling the sensor: https://bitbucket.org/teckel12/arduino-new-ping/wiki/Home
The sensor looks like this:
The level is measured once every second at the moment. Definately overkill for all use cases. The output is sent to the serial monitor at 115200 baud. Will be changed in the future but good for debugging.
We have a cylindrical tank buried in the ground beside the how. The measures in the code are related like this:
The formula for "volume in a horizontal cylinder form" I use is explained here: http://www.mathopenref.com/cylindervolpartial.html. The size of the tank is important to know and the placement of the sensor.