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archpi-zerow-sensors

ArchLinuxARM Raspberry PI Zero send sensors (DHT22, DS18B20) to influxdb v1.8 using go

2 programs: 1 for DHT22 and one for DS18B20

TODO:

  • try and learn some Go
  • merge both programs into 1 and share single influxdb client
  • use config file for all settings
  • make non-root user read DHT22 sensor

Tested on:

  • Linux archlinuxarm 5.4.83-1-ARCH #1 SMP PREEMPT Mon Dec 14 15:44:54 UTC 2020 armv6l GNU/Linux
  • go version go1.15.6 linux/arm
  • InfluxDB 1.8.3
  • /boot/config.txt:
gpu_mem=16
initramfs initramfs-linux.img followkernel

device_tree=bcm2835-rpi-zero-w.dtb

# does not work if below is enabled..
#dtoverlay=dht11,gpiopin=17

dtoverlay=w1-gpio,gpiopin=24

Connections:

- DS18B20 data line connected to GPIO24
- DHT22 data line connected to GPIO17

Compile:

- go build dht22.go
- go build ds18b20.go
  • go dependencies to be picked up in common manner

Thanks to all who provided libraries and examples online

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