Circuit and PCB - SmartMilk/SmartMilk GitHub Wiki

SmartMilk's circuit design is simple but effective, and can be easily replicated by someone with no experience in electronic circuits. The only wiring required is connecting the DS18B20 temperature sensor to the raspberry pi, with a 4.7k pullup resistor placed between the Vdd and DQ wires of the DS18B20. Below is the circuit schematic:

Which can then be constructed into a Printed Circuit Board (PCB), the schematic of which is shown below:

In the above diagram, the PCB dimensions are in mm.

If you do not have access to or have enough experience to create a PCB, no problem! The circuit is very easily replicable on a cheap breadboard.