The ctreader-docker's intro from subnivean

ctreader-docker's Introduction

Code to read the current off a wire using a CT hat connected to a Raspberry Pi.

Run via a cron job added via sudo crontab -e.

Multiple cron jobs with sleep offsets can be used to get sub-minute data resolution.

NOTE: In order for the CT readers to work you'll need to:

sudo raspi-config
Go to Interface Options
Go to Serial Port
Say 'No' to '...login shell...'
Say 'Yes' to 'Would you like the serial port hardware to be enabled?'
Exit raspi-config (but don't reboot)
Edit /boot/config.txt to add dtoverlay=disable-bt at end
Run sudo systemctl disable hciuart
sudo reboot
Log back in
Insert the RPICT board on the RPi
The following lines are for testing only and are not required to make things work:
- stty -echo -F /dev/ttyAMA0 raw speed 38400 (should see 38400)
- cat /dev/ttyAMA0 (should see readings)
sudo apt-get install python3-pip
sudo pip install pyserial
The following lines are only required if you need/want to make config changes to the RPICT board (I did not need to):
- wget lechacal.com/RPICT/tools/lcl-rpict-package_latest.deb
- sudo dpkg -i lcl-rpict-package_latest.deb
- Test with lcl-run
- lcl-rpict-config.py -a (copies the content of the epprom to a local file called /tmp/rpict.conf)
- lcl-rpict-config.py -a -w /tmp/rpict.conf (writes back any edits to /tmp/rpict.conf)
- /tmp/rpict.conf is no longer needed.