Pimoroni Enviro+ Drivers

Go library to read data from Pimoroni's Enviro+ sensors.

⚠️ Experimental, API subject to change ⚠

BME250

Package to read pressure, relative humidity and temperature sensors.

package main

import (
    "fmt"
    "log"
    "periph.io/x/periph/conn/i2c/i2creg"
    "periph.io/x/periph/conn/physic"
    "periph.io/x/periph/devices/bmxx80"
    "periph.io/x/periph/host"
)

func main() {
    // Make sure periph is initialized.
    if _, err := host.Init(); err != nil {
        log.Fatal(err)
    }

    // Use i2creg I²C bus registry to find the first available I²C bus.
    b, err := i2creg.Open("")
    if err != nil {
        log.Fatalf("failed to open I²C: %v", err)
    }
    defer b.Close()

    d, err := bmxx80.NewI2C(b, 0x76, &bmxx80.DefaultOpts)
    if err != nil {
        log.Fatalf("failed to initialize bme280: %v", err)
    }
    e := physic.Env{}
    if err := d.Sense(&e); err != nil {
        log.Fatal(err)
    }
    fmt.Printf("%8s %10s %9s\n", e.Temperature, e.Pressure, e.Humidity)
}

LTR559

Light/Proximity Sensor.

The driver is a port of the Python driver from Pimoroni.

Reading data from the sensor

// Read proximity and light from the LTR559 sensor
package main

import (
    "fmt"
    "time"

    "github.com/rubiojr/go-enviroplus/ltr559"
)

func main() {
    d := ltr559.New()

    fmt.Printf("Manufacturer ID:  0x%x\n", d.ManufacturerID())
    fmt.Printf("Part ID:          0x%x\n", d.PartID())

    for {
        fmt.Println("proximity: ", d.Proximity())
        fmt.Println("      lux: ", d.Lux())
        time.Sleep(1 * time.Second)
    }
}

PMS5003

Particle concentration sensor.

package main

import (
    "fmt"

    "github.com/rubiojr/go-enviroplus/pms5003"
)

func main() {
    dev, err := pms5003.New()
    if err != nil {
        panic(err)
    }
    go func() {
        dev.StartReading()
    }()
    for {
        r := dev.LastValue()
        fmt.Println("-------")
        fmt.Println("PM1.0 ug/m3 (ultrafine):                        ", r.Pm10Std)
        fmt.Println("PM2.5 ug/m3 (combustion, organic comp, metals): ", r.Pm25Std)
        fmt.Println("PM10 ug/m3 (dust, pollen, mould spores):        ", r.Pm100Std)
        fmt.Println("PM1.0 ug/m3 (atmos env):                        ", r.Pm10Env)
        fmt.Println("PM2.5 ug/m3 (atmos env):                        ", r.Pm25Env)
        fmt.Println("PM10 ug/m3 (atmos env):                         ", r.Pm100Env)
        fmt.Println("0.3um 1 0.1L air:                               ", r.Particles3um)
        fmt.Println("0.5um 1 0.1L air:                               ", r.Particles5um)
        fmt.Println("1.0um 1 0.1L air:                               ", r.Particles10um)
        fmt.Println("2.5um 1 0.1L air:                               ", r.Particles25um)
        fmt.Println("5um 1 0.1L air:                                 ", r.Particles50um)
        fmt.Println("10um 1 0.1L air:                                ", r.Particles100um)
        time.Sleep(1 * time.Second)
    }
}