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This Digital Cable Sensor DS18B20 with the simple 1-Wire Interface measures temperatures between -55 and +125 degrees Celsius.
Libraries for this sensor type and different programming environments, for example for Arduino or Raspberry, are available and easy to find.
The sensor element is conditionally watertight. Use it under wet conditions at your own risk.
A temperature alarm condition can be programmed right in the sensor (nonvolatile).
Every sensor element comes with a unique, digital serial number. Therefore, multiple sensors can be connected to the same 1-Wire interface.
- overall length is 100cm
- probe size is about 50 x 6mm
- voltage supply 3.0 to 5.5V DC
- operating current ca. 1.5mA
- standby current ca. 3A
- transmission current 1mA/4mA (logic 1/0)
Wire color code:
red - VCC
black - GND
yellow - DATA
Please refer to the DS18B20 data sheet for more information.
1 review for Digital Temperature Cable Sensor DS18B20 watertight, 1m
Rated 5 out of 5
jason.brett (verified owner)–
I ordered several and have been happy with them.
I do note, however, that my wiring is different from that shown in the image on the page.
My sensors have RED, BLACK and BLUE (not yellow) wires. The sensor works for me when:
RED is positive supply voltage (I’m using 3.3V with an ESP8266, but would 5V with an Arduino)
BLACK is GND.
BLUE is the signal line, connected to the microcontroller and held HIGH with a “serveral” kOhm resistor. (I think 4K7 is recommended, but I’m using 10K and it’s working fine. Use what you’ve got lying around!)
I haven’t tried the true one-wire mode, using parasitic power on the communication line, but have tried connecting multiple sensors to the same data pin. No problems with OneWire library for Arduino. It has sample code to help get started.
Only logged in customers who have purchased this product may leave a review.
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jason.brett (verified owner) –
I ordered several and have been happy with them.
I do note, however, that my wiring is different from that shown in the image on the page.
My sensors have RED, BLACK and BLUE (not yellow) wires. The sensor works for me when:
RED is positive supply voltage (I’m using 3.3V with an ESP8266, but would 5V with an Arduino)
BLACK is GND.
BLUE is the signal line, connected to the microcontroller and held HIGH with a “serveral” kOhm resistor. (I think 4K7 is recommended, but I’m using 10K and it’s working fine. Use what you’ve got lying around!)
I haven’t tried the true one-wire mode, using parasitic power on the communication line, but have tried connecting multiple sensors to the same data pin. No problems with OneWire library for Arduino. It has sample code to help get started.