DS18B20 Waterproof Temperature Probe
by Maxim / clone
SKU: PSA-CMP-DS18B20
No reviews yetTypical India street price
₹60–₹140
Sealed stainless probe for liquids and outdoor weather.
Interface: 1-Wire
Get notified if we start selling this part
Concept
Digital thermometer on a 1-Wire bus; many sensors can share one pin.
A little theory
Each chip has a unique 64-bit ROM. Conversion 9–12 bit, ±0.5 °C. In the classroom, treat DS18B20 Waterproof Temperature Probe as a beginner part using 1-Wire. Typical India street price is about ₹60–₹140. Always verify voltage and pin labels on your exact module — silk screens vary across clones. Start with a datasheet or trusted learn guide, power the part correctly, share GND with the MCU, and test with a simple blink/read sketch before building the full project. Measure voltages with a multimeter when something fails, and keep actuator current off the MCU regulator.
How it works in a project
4.7 kΩ pull-up on data. OneWire + DallasTemperature libraries.
Classroom & project use
- Aquarium
- Soil / compost
- Weather
Buying in India
Precautions
- Always use pull-up
- Don’t submerge the cable joint unless sealed
Specifications
| Accuracy | ±0.5 °C |
| Bus | 1-Wire |
| Category | Sensors |
| Difficulty | Beginner |
| Voltage | 3.0–5.5V |
| Interface | 1-Wire |
Pinout
See module silkscreen: typically VCC, GND, and signal pins. Confirm labels against the seller photo — clones vary.
