DS18B20 Temperature Sensor Probe
Stainless Steel Waterproof Digital Temperature Probe
This DS18B20 temperature sensor is a waterproof digital thermometer housed in a stainless steel probe, designed for reliable temperature measurement in wet and harsh environments [citation:1][citation:2][citation:5]. It utilizes the 1-Wire interface, allowing multiple sensors to share a single microcontroller pin for expansive projects [citation:1][citation:2][citation:5].
Wide Temperature Range Measures from 55°C to +125°C [citation:1][citation:4][citation:7].
High Accuracy ±0.5°C precision from 10°C to +85°C [citation:1][citation:5][citation:7].
The probe operates on a 3.0V to 5.5V power supply [citation:1][citation:7][citation:10].
The sensor's resolution is configurable from 9 to 12 bits, balancing speed and precision [citation:2][citation:7][citation:10].
A 4.7kΩ pull-up resistor is required on the data line for proper communication [citation:3][citation:9][citation:11].
Technical Specifications
| Parameter | Value |
|---|
| Temperature Range | -55°C to +125°C [citation:1][citation:4][citation:7] |
| Accuracy | ±0.5°C (-10°C to +85°C) [citation:1][citation:5][citation:7] |
| Resolution | 9 to 12-bit (configurable) [citation:2][citation:7][citation:10] |
| Supply Voltage | 3.0V to 5.5V [citation:1][citation:7][citation:10] |
| Interface | 1-Wire (single data pin) [citation:1][citation:2][citation:5] |
| Probe Material | Stainless Steel [citation:1][citation:2][citation:5] |
= Key Features =
+1Wire Interface Only one digital pin needed for communication [citation:1][citation:2][citation:5]
+Waterproof and Durable - Sealed stainless steel probe for humid environments [citation:1][citation:2][citation:5]
+Unique 64bit Serial Number Each sensor has a factory-programmed identifier [citation:2][citation:7][citation:10]
+Multipoint Capability - Multiple sensors can be connected on the same bus [citation:2][citation:7][citation:10]
= Applications =
- Aquariums and fish tanks [citation:1][citation:5]
- Refrigerators and freezers [citation:1]
- Greenhouse and incubation systems [citation:1]
- HVAC and environmental monitoring [citation:5][citation:8]
Versatile and Precise - A robust, reliable probe for demanding measurement tasks.
Easy Integration Simplified wiring with the 1Wire protocol [citation:1][citation:2][citation:5].
√ Cable color coding: Red (VCC), Yellow/White (Data), Black (GND) [citation:1][citation:2].
√ Compatible with Arduino, Raspberry Pi, and other microcontrollers [citation:3][citation:9].
Troubleshooting
No sensor detected:
- Verify the 4.7kΩ pull-up resistor is installed on the data line [citation:3][citation:9][citation:11].
- Check wiring connections: VCC to 3.3V/5V, GND to ground, data to the digital pin [citation:1][citation:2].
- Ensure the sensor is properly powered within the 3.0V to 5.5V range [citation:1][citation:7].
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