
These 1-wire digital temperature sensors are fairly precise (±0.5°C over much of the range) and can give up to 12 bits of precision from the onboard digital-to-analog converter.
Ground lead, DS18B20 TO-92 pin 1. Product page identifies the sold item as DS18B20; package pin order is from the DS18B20 datasheet, source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf
1-Wire data lead, DS18B20 TO-92 pin 2. Adafruit product page states the sensor uses one digital pin and needs a 4.7k pullup from DATA to VCC; package pin order source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf; usage source: https://www.adafruit.com/product/374
Supply lead, DS18B20 TO-92 pin 3. Adafruit product page states usable with 3.0V to 5.5V power/data; package pin order source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf
0V · 3.0V to 5.5V power/data range per Adafruit product page
Verify supply voltage and logic levels before powering up.
Module pins: VDD, GND. Schematik maps them to your board in the app.
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| Pin | Position | Type | Function | Voltage |
|---|
| GND | TO-92 pin 1, left lead when viewing flat face with leads downward | ground | Ground lead, DS18B20 TO-92 pin 1. Product page identifies the sold item as DS18B20; package pin order is from the DS18B20 datasheet, source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf | 0V |
| DQ / DATA | TO-92 pin 2, centre lead when viewing flat face with leads downward | data | 1-Wire data lead, DS18B20 TO-92 pin 2. Adafruit product page states the sensor uses one digital pin and needs a 4.7k pullup from DATA to VCC; package pin order source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf; usage source: https://www.adafruit.com/product/374 | 3.0V to 5.5V power/data range per Adafruit product page |
| VDD | TO-92 pin 3, right lead when viewing flat face with leads downward | power | Supply lead, DS18B20 TO-92 pin 3. Adafruit product page states usable with 3.0V to 5.5V power/data; package pin order source: https://cdn-shop.adafruit.com/datasheets/DS18B20.pdf | 3.0V to 5.5V |