cryptopi-monitor

Monitor cryptocurrency stats and compare it to your own wallet, displaying the details on a LCD screen using a Raspberry Pi

Features:

• Queries CoinMarketCap for API data about a currency.
• Updates current price on a regular interval
• Details are coloured, green for good red for bad (not very colour blind friendly but these are easy to edit)
• Shows details about your holding via editing a variable
• Shows a bar along the bottom to display how far through a refresh it is
• Can query your wallet's public address and retrieve your current amount of tokens

What you'll need:

• A Raspberry Pi, This setup has a RPI4 in mind but an older one should work
• An LCD screen such as the Adafruit 320x240 TFT touchscreen module https://www.adafruit.com/product/1601
• Some knowledge of Python - I am a novice with coding so you may well want to improve my code.
• A CoinMarketCap API key, you can get a free tier one at https://coinmarketcap.com/api/
• A BscScan API key if you want to monitor how much you have in your wallet automatically, you can get a free key here : https://bscscan.com/apis

Getting setup:

• First off, connect your LCD screen and set it up as a 'Raw Frame Buffer Device' so that you can interact with it using pygameas a seperate display. Adafruit have a good script/guide for using one of their devices: https://learn.adafruit.com/adafruit-pitft-28-inch-resistive-touchscreen-display-raspberry-pi/easy-install-2

• Make sure you have Python 3 installed on your Raspberry Pi

• Install the following Python modules: Pygame https://www.pygame.org/wiki/GettingStarted :
  Coin Market Cap API https://pypi.org/project/python-coinmarketcap/ :
  

    sudo pip install pygame	
    sudo pip install python-coinmarketcap
  

Edit lcd.py to enter your API key as well as enter in your currency info/how much you have.
You can find out your wallet address by going into TrustWallet and copying the appropriate recieve address:

coin_symbol = 'SAFEMOON'
my_safe_moon = 10000000 # how much safemoon do I own
my_money_spent = 10.00 # how much money i've spent
real_currency = 'GBP' # enter your currency type here - for example USD for US dollars

cmc = CoinMarketCapAPI('enter-your-api-ley-here') # enter in your CoinMarketCap API key here, free account rate limit is 333 api calls a days
bscscan_apikey = '123456789' # enter in your BscScan API key here, if you leave this as the default number it will not query your wallet.
my_wallet_address = '0x1234567890' # enter in your TrustWallet/SafeMoon wallet public address. Never give out your recovery key to anyone and do not enter it here

If you want to alter the time between api checks, edit the following lines but make sure you don't overgo your api query limits:

api_info_next_check_query_time = 28800 # time in seconds between coin api info queries
api_data_query_time = 360 # time in seconds between api queries

Save and run the python script using sudo python lcd.py - see if it all works!

Possible future improvements:

• Add in error checking
• Work out how to query coins/tokens in a wallet for automatic updating of your value
• Better positioning on the screen to support screen sizes other than 320x240
• Check multiple coins/tokens and cycle through them all

Changelog:

18th June 2021:

• Added ability to check current status of a wallet using the BscScan API and a public wallet address, great for tokens that give reflections.

14th June 2021:

• Original release