Bitcoin stock price for your RPi Zero

• Raspberry Pi Zero W (or any other RPi)
• Waveshare eInk display (supports multiple versions)

1. Turn on SPI via sudo raspi-config

   Interfacing Options -> SPI
   

2. Install eInk display drivers and dependencies

   sudo apt update
   sudo apt-get install python3-pip python3-pil python3-numpy
   pip3 install RPi.GPIO spidev
   git clone https://github.com/waveshare/e-Paper.git ~/e-Paper
   pip3 install ~/e-Paper/RaspberryPi_JetsonNano/python/
   pip3 install inky[rpi]
   

   for more information refer to: https://www.waveshare.com/wiki/2.13inch_e-Paper_HAT
3. Download Zero BTC Screen

   git clone https://github.com/dr-mod/zero-btc-screen.git ~/zero-btc-screen
   

4. Run it

   python3 ~/zero-btc-screen/main.py
   

5. To make it run on startup by adding a system service. There are two alternatives to accomplish this:

   1. Using the rc.local file

      1. sudo nano /etc/rc.local
      2. Add one the following before exit 0

      /usr/bin/python3 /home/pi/zero-btc-screen/main.py &
      

      conversely, you can run in screen you can install it with sudo apt-get install screen

      su - pi -c "/usr/bin/screen -dm sh -c '/usr/bin/python3 /home/pi/zero-btc-screen/main.py'"
      

   2. Using the system's services daemon

      1. Edit a new service configuration file

      sudo nano /etc/systemd/system/btc-screen.service
      

      2. Copy and paste the following into the service configuration file and change any settings to match your environment

      [Unit]
      Description=zero-btc-screen
      After=network.target
      
      [Service]
      ExecStart=/usr/bin/python3 -u main.py
      WorkingDirectory=/home/pi/zero-btc-screen
      StandardOutput=inherit
      StandardError=inherit
      Restart=always
      User=pi
      
      [Install]
      WantedBy=multi-user.target
      

      3. Enable the service so that it starts whenever the RPi is rebooted

      sudo systemctl enable btc-screen.service
      

      4. Start the service and enjoy!

      sudo systemctl start btc-screen.service
      

      If you need to troubleshoot you can use the logging configurations of this program (mentioned below). Alternatively, you can check to see if there is any output in the system service logging.

      sudo journalctl -f -u btc-screen.service
      

The application supports multiple types of e-ink screens, and an additional "picture" screen.

To configure which display(s) to use, configuration.cfg should be modified. In the following example an e-ink epd2in13v2 and "picture" screens are select:

[base]
console_logs             : false
#logs_file                : /tmp/zero-btc-screen.log
dummy_data               : false
refresh_interval_minutes : 15

# Enabled screens or devices
screens : [
    epd2in13v2
#    epd2in13bv3
    picture
#    inkyWhatRBW
  ]

# Configuration per screen
# This doesn't make any effect if screens are not enabled above
[epd2in13v2]
mode : line

[epd2in13bv3]
mode  : line

[picture]
filename : /home/pi/output.png

[inkyWhatRBW]
mode : candle

The following screens are supported:

• epd2in13v2
• epd2in13bv3
• inkyWhat (Red, Black, White)
• picture