rpi

Modules

Pressure/Altitude/Temperature (BMP085)

git clone https://github.com/adafruit/Adafruit_Python_BMP.git

cd Adafruit_Python_BMP

sudo python setup.py install

RTC (DS3231)

• Edit /boot/config.txt:

    dtoverlay=i2c-rtc,ds3231
    dtparam=i2c_arm=on

• Edit /etc/modules-load.d/raspberrypi.conf:

    i2c-bcm2835
    i2c-dev
    rtc-ds1307

• Add /etc/udev/rules.d/50-rtc-hwclock.rules

    KERNEL=="rtc0", RUN+="/sbin/hwclock -s"

• Edit /etc/mkinitcpio.conf:

    MODULES=(i2c-bcm2835 i2c-dev rtc-ds1307)
    BINARIES=(hwclock)
    FILES=(/etc/udev/rules.d/50-rtc-hwclock.rules)

• Generate mkinitcpio & reboot

    mkinitcpio -p linux-raspberrypi4
    systemctl reboot

• Test:

    pacman -S i2c-tools
    i2cdetect -y 1
    hwclock -r

Result should be:

         0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
    00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
    10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
    20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
    30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
    40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
    50: -- -- -- -- -- -- -- 57 -- -- -- -- -- -- -- -- 
    60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- -- 
    70: -- -- -- -- -- -- -- -- 

• Clean jouralctl

    sudo journalctl --rotate            //archive all
    sudo journalctl --vacuum-time=1s

Temperature/Humidity (DHT22)

git clone https://github.com/adafruit/Adafruit_Python_DHT.git

cd Adafruit_Python_DHT

sudo python setup.py install

Temperature (1Wire DS18B20)

Edit /boot/config.txt:

dtoverlay=w1-gpio

Repo:

git clone https://github.com/timofurrer/w1thermsensor

Backup

mkdir root

mount /dev/sdd2 root
mount /dev/sdd1 root/boot

cd root

bsdtar -cpf /zoid/piw-20170701.tar.gz .

umount -R root

Database

CREATE TABLE dht22 (id integer not null, temperature double precision not null, humidity double precision not null, tstamp timestamp not null);

CREATE TABLE bmp085 (id integer not null, temperature double precision not null, pressure double precision not null, altitude double precision not null, tstamp timestamp not null);

CREATE TABLE windspeed (id integer not null, speed double precision not null, tstamp timestamp not null);

CREATE TABLE raingauge (id integer not null, rain double precision not null, tstamp timestamp not null);

CREATE TABLE onewire (id integer not null, temperature double precision not null, tstamp timestamp not null);

CREATE TABLE battery (id integer not null, volt double precision not null, tstamp timestamp not null);

CREATE TABLE portal (id integer not null, state integer not null, tstamp timestamp not null);