RaspBerry Pi eInk Display

A US$17 eInk display for my Qtum Stake.

Reference

• https://www.waveshare.com/1.54inch-e-paper-module.htm
• https://www.waveshare.com/wiki/1.54inch_e-Paper_Module_(B)
• http://www.instructables.com/id/Waveshare-EPaper-and-a-RaspberryPi/

Setup

• assume you have did the similar setup in https://steemit.com/qtum/@cryptominder/qtum-staking-tutorial-using-qtumd-on-a-raspberry-pi-3

• Make sure the SPI is enabled, edit /boot/config.txt and uncomment the line
  sudo nano /boot/config.txt

dtparam=spi=on

The pin connection
Here is the connection between Raspberry Pi 3B and E-paper.

e-Paper  RaspberryPi
3.3V(red)     3.3V (pin1)
GND      GND  (pin6)
DIN      MOSI (pin19)
CLK      SCLK (pin23)
CS       CE0  (pin24)
DC       BCM25(pin22)
RST      BCM17(pin11)
BUSY     BCM24(pin18)

Phython script
Download the demo code from https://www.waveshare.com/wiki/File:1.54inch_e-Paper_Module_code.7z
and unzip it.

Create a new python file e.g. nano read_qtum_wallet.py
script is currently raw
Source code here https://drive.google.com/file/d/0B_wF6Tm_vWFUMFV6ZzJNWGJSRzQ

Add to crontab</>
crontab -e
Run the script every 15min.
0,15,30,45 * * * * /usr/bin/python /home/pi/eInk/qtum/check_qtum_wallet.py