Honeywell flow sensor

Read the i2c Honeywell HAFBSF0200C2AX3 flow sensor on Raspberry Pi 3B+/4B

What you need.

Raspberry Pi 3B+ or Raspberry Pi 4B
Sensor Honeywell HAFBSF0200C2AX3
4 cables

installation of the pigpio library

sudo rm -rf PIGPIO

wget abyz.me.uk/rpi/pigpio/pigpio.zip

unzip pigpio.zip

cd PIGPIO

make

sudo make install

The Pigpio is executed at each start/restart:

Pi3B+

sudo systemctl enable pigpiod

Pi4B

sudo crontab -e

There must be written in the crontab:

@reboot /usr/local/bin/pigpiod