A small breakout board that makes wiring a DS18B20 temperature sensor effortless. Connect a DS18B20 probe (or a bare TO-92 sensor) to the 3-way green screw terminal, and the onboard 4.7kΩ pull-up resistor is already fitted — there's nothing extra to add. Three labelled male header pins (VCC, GND, DAT) drop straight onto a breadboard or jumper leads. Please note: the temperature probe/sensor is not included — this is the adapter board only.
- Onboard 4.7kΩ pull-up resistor — nothing else to add
- 3-way screw terminal for a solid, solder-free probe connection
- VCC / GND / DAT male header pins for breadboards & jumpers
- Works with waterproof DS18B20 probes and bare TO-92 sensors
- 1-Wire protocol — one GPIO pin, chain multiple sensors
- 3.0–5.5V supply — Arduino, ESP32 & Raspberry Pi friendly
- Compact 23.4 × 20.3mm board, clearly labelled
- Swap or replace probes without touching a soldering iron
Specifications
What's in the box
The DS18B20 sensor/probe is not included. Pair this with one of our waterproof DS18B20 probes (1m or 3m) or a bare TO-92 DS18B20 sensor.
Great for
Wiring & getting started
- Connect the probe to the screw terminal
Loosen the screws, insert the probe leads — Red to VCC, Black to GND, Yellow to DAT — and tighten.
- Plug into your board
Run jumpers from the VCC, GND and DAT header pins to 3.3–5V, GND and a free GPIO. No pull-up resistor to add — it's already on the board.
- Install the libraries
In Arduino IDE, install OneWire by Jim Studt and DallasTemperature by Miles Burton via Library Manager.
- Upload the example sketch
Open File → Examples → DallasTemperature → Simple. Upload and open Serial Monitor at 9600 baud to see your reading.
Common questions
Is the temperature sensor/probe included?
No — this is the adapter board only. Pair it with a DS18B20 waterproof probe (we stock 1m and 3m) or a bare TO-92 DS18B20 sensor.
Do I still need to add a pull-up resistor?
No. A 4.7kΩ pull-up is already fitted on the board, so you can wire the probe straight to your microcontroller and it'll communicate reliably.
Which terminal goes where?
The screw terminal and header are both labelled VCC, GND and DAT. Connect the probe's red wire to VCC, black to GND and yellow (data) to DAT.
Can I use a bare TO-92 DS18B20?
Yes. Wire the sensor's three legs into the screw terminal following the DS18B20 datasheet pinout (GND, DAT, VCC) and the onboard resistor handles the rest.
Can I chain multiple probes?
Yes. The DS18B20 is a 1-Wire device — multiple sensors can share the same data line, each with its own unique 64-bit address.
Good to know: The terminal and pins are labelled VCC, GND and DAT. The DS18B20 probe is not included — grab a 1m or 3m waterproof DS18B20 probe to go with it. The 4.7kΩ pull-up is already on the board, so no extra components are needed.