A very popular digital thermometer, temperature monitoring with 2-wire or 3-wire Connections.
# Wiring
## Normal Power Mode
3-wire connection of normal power mode
* P35 -> DQ
* GND -> GND
* 5V/3.3V -> VDD
## Parasite Power Mode:
In parasite power mode, it's a 2-wire connection. It requires both DS18B20 GND and Vdd to be connected to ground. The DQ pin is the data/parasite power line, which requires a pull-up resistor (set by PxPU command).
It has to be noted that **not** all DS18B20 you bought online works in parasite mode. There are cheap units that output `0` only in parasite mode, in this case you need some modifications to make it work.
* P35 -> DQ
* GND -> GND -> VDD
* 5V
## Parasite Power Mode Emulation:
In case some DS18B20 doesn't work in parasite mode, you can add one 0.1uF capacitor and one 1N4148 to achieve 2-wire connection.
In thise way DS18B20 actually works in normal power mode
