Credits

Project is forked from dr-mod's zero-btc-screen.

Enhancements

Have made the following enhancements:

• Changed to make use of coingecko api
• Cycle through multiple cryptocurrencies
• Right-aligned the price
• Ability to change base currency to others instead of just usd

Zero Crypto 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/dr-mod/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 selected.

The values for the currency is in the format <first coin's coingecko's API id>:<first coin's desired abbreviation>, <second coin's coingecko's API id>:<second's coin desired abbreviation>, etc. The example below is for bitcoin, ethereum, solana and wonderland. You can get the details from https://www.coingecko.com/.

The days setting determines the candle stick interval. Valid values are 1, 7 or 14. 1 gives you 30-min candle body while 7 and 14 gives 4-hour candle body.

[base]
console_logs             : false
#logs_file               : /tmp/zero-crypto-screen.log
dummy_data               : false
refresh_interval_minutes : 6
days                     : 1
cryptocurrencies         : bitcoin:BTC,ethereum:ETH,solana:SOL,wonderland:TIME
currency                 : usd

# 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

To make it run on startup you can choose from 2 options:

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-crypto-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-crypto-screen/main.py'"
   

2. Using the system's services daemon

   1. Create a new service configuration file

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

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

       [Unit]
       Description=zero-crypto-screen
       After=network.target
      
       [Service]
       ExecStart=/usr/bin/python3 -u main.py
       WorkingDirectory=/home/pi/zero-crypto-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 crypto-screen.service
      

   4. Start the service and enjoy!

       sudo systemctl start crypto-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 crypto-screen.service