樹莓派防水數位溫度感測器(Waterproof Digital Probe Temperature Sensor)
- This DS18B20 1-WIRE Digital Thermometer with 9 to 12 bit programmable resolution.
- Unique 1-Wire interface only requires ONE data pin for communication
- Each device has a unique 64-bit serial number stored in an on-board ROM
- Can be powered from the data line with a power supply range of 3.0V to 5.5V in Parasite mode
- Measures temperatures from -55°C to +125°C
- ±0.5°C accuracy from -10°C to +85°C
- Thermometer resolution is user-selectable from 9 to 12 bits
- Converts temperature to 12-bit digital word in 750ms (max)
- The main chip is contained within a stainless steel tube measuring 6 x 50mm with a 1 meter long lead.
Demo Python program, 18b20.7z
Minimum Requirements – a Raspberry Pi with Raspbian (wheezy) installed ,
1x Rs-Pi 18B20 1-Wire Temp Sensor with 1 Meter long lead
3x 20cm male to male cable