https://github.com/yryz/ds18b20

Golang get temperature from ds18b20 sensor connected to a Raspberry PI (GPIO w1 pin).
https://github.com/yryz/ds18b20

ds18b20 golang raspberry raspberry-pi temperature-sensor

Last synced: 3 months ago
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Golang get temperature from ds18b20 sensor connected to a Raspberry PI (GPIO w1 pin).

• Host: GitHub
• URL: https://github.com/yryz/ds18b20
• Owner: yryz
• License: apache-2.0
• Created: 2016-05-22T05:45:46.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2020-05-27T15:44:35.000Z (almost 5 years ago)
• Last Synced: 2025-02-01T12:44:13.071Z (4 months ago)
• Topics: ds18b20, golang, raspberry, raspberry-pi, temperature-sensor
• Language: Go
• Homepage:
• Size: 37.1 KB
• Stars: 64
• Watchers: 3
• Forks: 11
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# ds18b20

Get sensor data from ds18b20 connected to the Raspberry (GPIO w1 pin).

![](https://raw.githubusercontent.com/yryz/ds18b20/master/pi-ds18b20.png)

## Usage

### Connect DS18B20

On the Raspberry Pi, you will need to add `dtoverlay=w1-gpio"` (for regular connection) or `dtoverlay=w1-gpio,pullup="y"` (for parasitic connection) to your /boot/config.txt. The default data pin is GPIO4 (RaspPi connector pin 7), but that can be changed from 4 to `x` with `dtoverlay=w1-gpio,gpiopin=x`.

Here's what I did:

```

sudo echo dtoverlay=w1-gpio-pullup,gpiopin=4 >> /boot/config.txt

sudo modprobe w1_gpio && sudo modprobe w1_therm

```

### Drivers

1-Wire drivers need to be loaded in order to create the connection between the physical sensor and the rPI.

You can load them from the terminal (or from the bin/modules.sh script).

    sudo modprobe wire

    sudo modprobe w1-gpio

    sudo modprobe w1-therm

### Install

    go get github.com/yryz/ds18b20

### Code

```go

package main

import (

    "fmt"

    "github.com/yryz/ds18b20"

)

func main() {

    sensors, err := ds18b20.Sensors()

    if err != nil {

        panic(err)

    }

    fmt.Printf("sensor IDs: %v\n", sensors)

    for _, sensor := range sensors {

        t, err := ds18b20.Temperature(sensor)

        if err == nil {

            fmt.Printf("sensor: %s temperature: %.2f°C\n", sensor, t)

        }

    }

}

```