CAT24C32WI-GT3 1.7~5.5V I2C 32Kb (4Kx8)
sudo nano /boot/config.txt
dtparam=i2c_vc=on
sudo reboot
git clone https://github.com/raspberrypi/hats.git
sudo apt-get install device-tree-compiler
cd hats/eepromutils
sudo make
cd /home/pi
git clone https://github.com/xenon462/eeprom-HAT-PiClock
cp -r eeprom-HAT-PiClock/. hats/eepromutils
cd hats/eepromutils
sudo ./eepflash.sh -w -f=blank.eep -t=24c32
sudo ./eepflash.sh -w -f=PiClock.eep -t=24c32
sudo reboot
cat /proc/device-tree/hat/name <(echo)
cat /proc/device-tree/hat/product <(echo)
cat /proc/device-tree/hat/product_id <(echo)
cat /proc/device-tree/hat/product_ver <(echo)
cat /proc/device-tree/hat/uuid <(echo)
cat /proc/device-tree/hat/vendor <(echo)
sudo nano /boot/config.txt
dtoverlay=hifiberry-dac
dtoverlay=vc4-kms-v3d,noaudio
cat /proc/asound/cards
speaker-test -D default -c 2 -twav