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Prepare the Raspberry Pi Zero

This description is commen for alle variants of clocks. Replace the 'XXX' with the clock name (e.g. 'bcd')

  • Download RASPBIAN image and flash to MicroSD card

  • Change boot files on MicroSD card for headless NDIS (USB/Ethernet) connection

  • Boot Raspberry Pi (can take more than a minute at first time)

  • Use SSH to connect to raspberrypi.local

    • Note: On Windows system use program Putty
    • Note: NDIS setup a network with address 169.254../16. It can take several minutes til the DNS entry is available

  • Login with user pi and password raspberry

  • Use sudo raspi-config to configure RPi system:

    • Set new password in menu Change User Password
    • Change device name in menu Network Options -> Hostnames (e.g. 'RPiClock')
    • Set WIFI access to your local network. Set SSID and key in menu Network Options -> WIFI
    • Set Localization in menu Localozation Options -> Change Locale
    • Set Timezone in menu Localization Options -> Timezone
    • (optional) Enable I2C if needed in menu Interfacing Options -> I2C
    • (optional) Enable 1-Wire if needed in menu Interfacing Options -> 1-Wire
    • Note: If using GPIO xx, do NOT enable SPI

  • Update your RPi system with sudo apt-get update and sudo apt-get upgrade

  • Install additional programs and libs with:

    • sudo apt-get install python3 python3-pip
    • sudo apt-get install pigpio
    • sudo apt-get install git

  • Start pigpio deamon with sudo systemctl start pigpiod

  • Start pigpio deamon at next boot automatically with sudo systemctl enable pigpiod

  • Install additional python libs with:

    • pip3 install pigpio and/or? sudo pip3 install pigpio

  • Download clock repository from GITHUB with git clone https://github.com/fablab-wue/piClock.git

  • Make python file executable with sudo chmod +x /home/pi/piClock/XXX.py

  • Test if clock program is working

    • Start clock with /home/pi/piClock/XXX.py
    • Stop with Ctrl-C

  • Variant 1 - Prepare system to start clock program at startup

    • Edit rc.local with sudo nano /etc/rc.local
    • Add at end before exit 0 sudo /home/pi/piClock/XXX.py &

  • Variant 2 - Prepare system to start clock program at startup

    • Edit system crontab file with sudo crontab -e
    • Add at end @reboot /home/pi/piClock/XXX.py

  • If all works, make a backup of the MicroSD card