Zero BTC Screen

Bitcoin (or any other currency) stock price for your RPi Zero

Hardware

Platform

• Raspberry Pi Zero W (or any other RPi)

Screens

• Waveshare eInk displays: epd2in13v2, epd2in13bv3
• inkyWhat (Red, Black, White)
• Virtual (picture)

Installation

1. Turn on SPI via sudo raspi-config

   Interfacing Options -> SPI
   

2. Install dependencies

   sudo apt update
   sudo apt-get install python3-pip python3-pil python3-numpy
   pip3 install RPi.GPIO spidev
   

3. Install drivers for your display

   1. Waveshare display

   git clone https://github.com/waveshare/e-Paper.git ~/e-Paper
   pip3 install ~/e-Paper/RaspberryPi_JetsonNano/python/
   

   for more information refer to: https://www.waveshare.com/wiki/2.13inch_e-Paper_HAT 2. Inky wHAT display

   pip3 install inky[rpi]
   

4. Download Zero BTC Screen

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

5. Run it

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

Screen configuration

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
currency                 : BTC

# 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 : candle

[epd2in13bv3]
mode  : line

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

[inkyWhatRBW]
mode : candle

Autostart

Using the system's services daemon 1. Create 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
   ```