DS18B20 overview
Waterproof DS18B20 Temperature Sensor is 1 meter long, sealed, and pre-wired Waterproof DS18B20 temperature sensor probe based on the DS18B20 sensor. It is very handy when you need to measure something far away, or in wet conditions. Because they are digital, you don’t get any signal degradation even over a long distance.
These 1-wire Waterproof DS18B20 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. They work great with any microcontroller using a single digital pin, and you can even connect multiple ones to the same pin, each one has a unique 64-bit ID burned in at the factory to differentiate them. Usable with 3.0-5.0V systems.
The only downside is they use the Dallas 1-Wire protocol, which is somewhat complex and requires a bunch of code to parse out the communication. When using a microcontroller put a 4.7k resistor to the sensing pin, which is required as a pullup from the DATA to the VCC line.
Key specifications
Datasheet
DS18B20 features
- A Probe by new original installation import DS18B20 temperature sensor chip.
- Chip each pin uses a heat-shrinkable tube to prevent short circuits, internal sealing glue, waterproof, and moistureproof.
- Stainless Steel tube encapsulation is waterproof and moistureproof to prevent rust.
- Stainless steel shell (6 * 45 mm), lead length 100 cm (shielding wire) use stability;
- Without the external components, the unique single bus;
- Cable specifications
- Stainless steel tube 6mm diameter by 30mm long
- Cable is 36″ long / 91cm, 4mm diameter (1 Meter Long)
- Contains DS18B20 temperature sensor
- Three wires – Red connects to 3-5V, Black connects to the ground and White is data.
- Uses 1-Wire interface- requires only one digital pin for communication
- Unique 64-bit ID burned into the chip
- Multiple sensors can share one pin
- Temperature-limit alarm system
DS18B20 pinout
| Name | Description |
|---|---|
| Ground | Connect to the ground of the circuit |
| Vcc | The powers of the Sensor can be 3.3V or 5V |
| Data | This pin gives output the temperature value which can be read using the 1-wire method |
DS18B20 applications
- DS18B20 Temperature Sensor: Digital temperature measurement.
- One-wire interface: Simplifies connectivity and reduces wiring complexity.
- High temperature accuracy: Provides precise temperature readings.
- Wide temperature range: -55°C to +125°C.
- Waterproof variant available: Suitable for outdoor and harsh environments.
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