![\"Raspberry](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2023\/07\/Raspberry-Pi-DS18B20-temperatue-sensor-Guide.jpg?resize=1200%2C675&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nTable of Contents<\/strong><\/h2>\n\n\n\nThroughout this tutorial, we\u2019ll cover the following main topics:<\/p>\n\n\n\n
\n- Introducing the DS18B20 Temperature Sensor<\/a><\/li>\n\n\n\n
- Wiring the DS18B20 Temperature Sensor to the Raspberry Pi<\/a><\/li>\n\n\n\n
- Enabling One-Wire on the Raspberry Pi<\/a><\/li>\n\n\n\n
- Testing the Temperature Sensor<\/a><\/li>\n\n\n\n
- Getting Sensor Readings from the DS18B20 – Python Script<\/a><\/li>\n<\/ul>\n\n\n\n
Prerequisites<\/h2>\n\n\n\n
Before continuing with this tutorial, check the following prerequisites.<\/p>\n\n\n\n
\n- Get familiar with the Raspberry Pi board\u2014if you\u2019re not familiar with the Raspberry Pi, you can read our Raspberry Pi Getting Started Guide here<\/strong>.<\/a><\/li>\n\n\n\n
- You must know how to run and create Python files on your Raspberry Pi. We like to program our Raspberry Pi via SSH using an extension in VS Code. We have a detailed tutorial about that subject: Programming Raspberry Pi Remotely using VS Code (Remote-SSH)<\/strong><\/a>.<\/li>\n\n\n\n
- Know how to use the Raspberry Pi GPIOs so that you know how to wire the circuit properly. Read the following tutorial: Raspberry Pi Pinout Guide: How to use the Raspberry Pi GPIOs?<\/strong><\/a><\/li>\n<\/ol>\n\n\n\n
Introducing DS18B20 Temperature Sensor<\/h2>\n\n\n\n
The DS18B20 temperature sensor<\/a> is a one-wire digital temperature sensor. This means that it just requires one data line (and GND) to communicate with your ESP32.<\/p>\n\n\n\nIt can be powered by an external power supply or it can derive power from the data line (called “parasite mode”), which eliminates the need for an external power supply.<\/p>\n\n\n
\n![\"DS18B20](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2019\/07\/DS18B20-tempeature-sensor-pinout.jpg?resize=750%2C490&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nEach DS18B20 temperature sensor has a unique 64-bit serial code. This allows you to wire multiple sensors to the same data wire. So, you can get temperature from multiple sensors using just one GPIO.<\/p>\n\n\n\n
The DS18B20 temperature sensor is also available in waterproof version<\/a>.<\/p>\n\n\n\n![\"DS18B20](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2019\/07\/ds18b20-waterproof.jpg?resize=750%2C421&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\nHere’s a summary of the most relevant specs of the DS18B20 temperature sensor:<\/p>\n\n\n\n
\n- Communicates over one-wire bus communication<\/li>\n\n\n\n
- Power supply range: 3.0V to 5.5V<\/li>\n\n\n\n
- Operating temperature range: -55\u00baC to +125\u00baC<\/li>\n\n\n\n
- Accuracy +\/-0.5 \u00baC (between the range -10\u00baC to 85\u00baC)<\/li>\n<\/ul>\n\n\n\n
For more information consult the DS18B20 datasheet<\/a>.<\/p>\n\n\n\nParts Required<\/h2>\n\n\n\n
To follow this tutorial you need the following parts:<\/p>\n\n\n\n
\n- Raspberry Pi Board<\/a> \u2013 read Best Raspberry Pi Starter Kits<\/a><\/li>\n\n\n\n
- DS18B20 temperature sensor<\/a> \u2013 waterproof version<\/a><\/li>\n\n\n\n
- 4.7k Ohm resistor<\/a><\/li>\n\n\n\n
- Jumper wires<\/a><\/li>\n\n\n\n
- Breadboard<\/a><\/li>\n<\/ul>\n\n\n
You can use the preceding links or go directly to MakerAdvisor.com\/tools<\/a> to find all the parts for your projects at the best price!<\/p>![](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2017\/10\/header-200.png?w=1200&quality=100&strip=all&ssl=1\")
<\/a><\/p>\n\n\n\nWiring a DS18B20 Temperature Sensor to the Raspberry Pi<\/h2>\n\n\n\n
The DS18B20 temperature sensor comes with three pins: GND, data, and VCC. The DS18B20 temperature sensor can be powered through the VDD pin (normal mode<\/strong>), or it can derive its power from the data line (parasite mode<\/strong>). You can choose either mode. We prefer using the normal mode.<\/p>\n\n\n\n<\/figure><\/div>\n\n\nIf you’re using the waterproof version, you can identify each pin by its color:<\/p>\n\n\n\n
\n- black: GND<\/li>\n\n\n\n
- red: VDD<\/li>\n\n\n\n
- yellow: data line<\/li>\n<\/ul>\n\n\n\n
The DS18B20 temperature sensor communicates using one-wire communication protocol. The Raspberry Pi supports one-wire on any GPIO pin, but the default is GPIO 4<\/strong>. So, we’ll wire the data pin of the sensor to GPIO 4. If you need to use another GPIO, see one of the following sections to learn how to enable the one-wire bus on a different pin<\/a>.<\/p>\n\n\n\n![\"Raspberry](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2023\/07\/raspberry-pi-ds18b20-wiring_bb.png?resize=1090%2C946&quality=100&strip=all&ssl=1\")
<\/a><\/figure><\/div>\n\n\n
Prerequisites<\/h2>\n\n\n\n
Before continuing with this tutorial, check the following prerequisites.<\/p>\n\n\n\n
- \n
- Get familiar with the Raspberry Pi board\u2014if you\u2019re not familiar with the Raspberry Pi, you can read our Raspberry Pi Getting Started Guide here<\/strong>.<\/a><\/li>\n\n\n\n
- You must know how to run and create Python files on your Raspberry Pi. We like to program our Raspberry Pi via SSH using an extension in VS Code. We have a detailed tutorial about that subject: Programming Raspberry Pi Remotely using VS Code (Remote-SSH)<\/strong><\/a>.<\/li>\n\n\n\n
- Know how to use the Raspberry Pi GPIOs so that you know how to wire the circuit properly. Read the following tutorial: Raspberry Pi Pinout Guide: How to use the Raspberry Pi GPIOs?<\/strong><\/a><\/li>\n<\/ol>\n\n\n\n
Introducing DS18B20 Temperature Sensor<\/h2>\n\n\n\n
The DS18B20 temperature sensor<\/a> is a one-wire digital temperature sensor. This means that it just requires one data line (and GND) to communicate with your ESP32.<\/p>\n\n\n\n
It can be powered by an external power supply or it can derive power from the data line (called “parasite mode”), which eliminates the need for an external power supply.<\/p>\n\n\n
\n<\/figure><\/div>\n\n\nEach DS18B20 temperature sensor has a unique 64-bit serial code. This allows you to wire multiple sensors to the same data wire. So, you can get temperature from multiple sensors using just one GPIO.<\/p>\n\n\n\n
The DS18B20 temperature sensor is also available in waterproof version<\/a>.<\/p>\n\n\n
\n<\/figure><\/div>\n\n\nHere’s a summary of the most relevant specs of the DS18B20 temperature sensor:<\/p>\n\n\n\n
- \n
- Communicates over one-wire bus communication<\/li>\n\n\n\n
- Power supply range: 3.0V to 5.5V<\/li>\n\n\n\n
- Operating temperature range: -55\u00baC to +125\u00baC<\/li>\n\n\n\n
- Accuracy +\/-0.5 \u00baC (between the range -10\u00baC to 85\u00baC)<\/li>\n<\/ul>\n\n\n\n
For more information consult the DS18B20 datasheet<\/a>.<\/p>\n\n\n\n
Parts Required<\/h2>\n\n\n\n
To follow this tutorial you need the following parts:<\/p>\n\n\n\n
- \n
- Raspberry Pi Board<\/a> \u2013 read Best Raspberry Pi Starter Kits<\/a><\/li>\n\n\n\n
- DS18B20 temperature sensor<\/a> \u2013 waterproof version<\/a><\/li>\n\n\n\n
- 4.7k Ohm resistor<\/a><\/li>\n\n\n\n
- Jumper wires<\/a><\/li>\n\n\n\n
- Breadboard<\/a><\/li>\n<\/ul>\n\n\n
You can use the preceding links or go directly to MakerAdvisor.com\/tools<\/a> to find all the parts for your projects at the best price!<\/p>
<\/a><\/p>\n\n\n\nWiring a DS18B20 Temperature Sensor to the Raspberry Pi<\/h2>\n\n\n\n
The DS18B20 temperature sensor comes with three pins: GND, data, and VCC. The DS18B20 temperature sensor can be powered through the VDD pin (normal mode<\/strong>), or it can derive its power from the data line (parasite mode<\/strong>). You can choose either mode. We prefer using the normal mode.<\/p>\n\n\n
\n<\/figure><\/div>\n\n\nIf you’re using the waterproof version, you can identify each pin by its color:<\/p>\n\n\n\n
- \n
- black: GND<\/li>\n\n\n\n
- red: VDD<\/li>\n\n\n\n
- yellow: data line<\/li>\n<\/ul>\n\n\n\n
The DS18B20 temperature sensor communicates using one-wire communication protocol. The Raspberry Pi supports one-wire on any GPIO pin, but the default is GPIO 4<\/strong>. So, we’ll wire the data pin of the sensor to GPIO 4. If you need to use another GPIO, see one of the following sections to learn how to enable the one-wire bus on a different pin<\/a>.<\/p>\n\n\n
\n<\/a><\/figure><\/div>\n\n\n
- DS18B20 temperature sensor<\/a> \u2013 waterproof version<\/a><\/li>\n\n\n\n
- Raspberry Pi Board<\/a> \u2013 read Best Raspberry Pi Starter Kits<\/a><\/li>\n\n\n\n
- You must know how to run and create Python files on your Raspberry Pi. We like to program our Raspberry Pi via SSH using an extension in VS Code. We have a detailed tutorial about that subject: Programming Raspberry Pi Remotely using VS Code (Remote-SSH)<\/strong><\/a>.<\/li>\n\n\n\n
![\"Enable](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2023\/07\/rpi-interface-options.png?resize=661%2C418&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"Enable](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2023\/07\/1-wire-rpi-configuration-tool.png?resize=661%2C418&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"one-wire](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2023\/07\/enable-1-wire-configuration-tool-rpi.png?resize=661%2C418&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"one](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2023\/07\/reboot-rpi-configuration-tools.png?resize=661%2C418&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"ds18b20](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2023\/07\/ds18b20-sensor.jpg?resize=750%2C421&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"discover](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2023\/07\/searching-devices-terminal-rpi.png?resize=661%2C418&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"find](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2023\/07\/check-temperature-sensor-terminal-ds18b20-rpi.png?resize=661%2C418&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n![\"demonstration](\"https:\/\/i0.wp.com\/randomnerdtutorials.com\/wp-content\/uploads\/2023\/07\/ds18b20-temperature-python-demonstration-readings-shell.png?resize=750%2C547&quality=100&strip=all&ssl=1\")
<\/figure><\/div>\n\n\n