A project to show realtime cryptocurrency price info in HMI USART screen

Now, you don't have to take your phone, open a cryptocurrency market app and wait for seconds until you can check the price. Just simply look at your table:

This project fetch data from both Huobi (using WebSocket) and Binance (using HTTP request), and update to HMI real-time.

Note: both of those market blocked requests from Mainland China IP

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Hardware

• Raspberry Pi 3 series (or any Linux Devboard)
• HMI UART Enhanced Screen (TJC-4832K035-011R)

Installation

For Respberry Pi 3 Series, you need to enable GPIO serial Port to make it works. Otherwise, a CH340 USBTTL also works at any platform, just simply modify serial port name using -s argument.

pip3 install -r requirements.txt
python3 main.py

Reference: https://blog.csdn.net/m0_37509650/article/details/85403217

Usage

usage: main.py [-h] [-s SERIAL] [-p POOL] [-l] [-v] [--serial-debug]

optional arguments:
  -h, --help            show this help message and exit
  -s SERIAL, --serial SERIAL
                        serial port location, default is /dev/ttyAMA0
  -p POOL, --pool POOL  update miner account information in sparkpool if given
  -l, --list-only       only print information rather than sending to serial port
  -v, --verbose         print data from network
  --serial-debug        show commands that sent to serial port

Example

python .\main.py -l

In Windows:

python .\main.py -s COM3 -p sp_*****

Don't stop

I recommend run script as daemon using pm2:

pm2 startup
pm2 main.py --interpreter=python3 -- <args>
pm2 save

--interpreter=python3 MUST REQUIRED

UI

You can change screen UI by modifying screen.HMI using USART HMI

Reference: http://wiki.tjc1688.com/doku.php?id=start

Changelog

• V4.0

  • Added Page 3: Now you can even monitor ETH Network Hashrate & Price changes
  • Curve data comes from Sparkpool API, scaled in month, and updates every 24 hours
  • Data got normalized before sent to HMI screen
  • Initialization logic got optimized
  • Serial Block got optimized
  • Current project works, but it might works better with a queue system managing serial commands in case some data get dropped while serial blocked.

• V3.0

  • Added page 2: Now support display mining information from Sparkpool, using -p POOL argument to specify a mining sub-account
  • Touch anywhere of screen to switch between market page and mining page
  • Currently I set a 2 minute interval for pool state update. You might need to change source script in main.py to adjust interval at line 255

• V2.0

  • Add argument parser to make it easy to use. Currently support:
    • -s to specify serial port
    • -l to print only
    • -v to show information from server
    • --serial-debug to show commands that sent to serial port

• V1.0

  • First Release

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Thanks

• Myself
• Weipu Liu