Prerequisites

Hardware	Amount
Female Jumpers	16
LCD Display SSD1306 128x64	1
Raspberry Pi Zero W	1
Push Buttons	2
LEDs (Green & Red)	2
10kΩ Resistors (Buttons)	2
220Ω Resistors (LEDs)	2
Power Supply	1
Breadboard	1
MicroSD Card with Raspberry Pi OS	1

Screenshot:

Software

• Raspberry Pi OS https://www.raspberrypi.org/downloads/
• Raspberry Pi Cross Compiler https://github.com/raspberrypi/tools
• Libraries:
  • libcurl (https://curl.haxx.se/libcurl/)
  • ssd1306 (https://github.com/iliapenev/ssd1306_i2c/)
  • WiringPi (http://wiringpi.com/reference/i2c-library/)
  • cxxopts (https://github.com/jarro2783/cxxopts/)
  • rapidjson (https://github.com/Tencent/rapidjson/)
  • fmt (https://github.com/fmtlib/fmt/)

Enable I2C Interface:

sudo raspi-config
5 Interfacing Options --> P5 I2C --> Yes

Faster I2C display refresh rates: set 1000 kbit/s boadrate for Raspberry Pi

sudo echo dtparam=i2c_baudrate=1000000 > /boot/config.txt

Installation:

git clone git@github.com:3n16m4/covid-pi.git && cd covid-pi
mkdir build && cd build
cmake .. -DCMAKE_TOOLCHAIN_FILE=../cmake/Toolchain-rpi.cmake && make -j
./covid-pi

Features:

pi@raspberrypi:~/src/covid-pi/build $ ./covid-pi --help
A covid-19 live tracker.
Usage:
  ./covid-pi [OPTION...]

  -h, --help                 Print usage
  -c, --cities alpha-2 code  Filter by country and show its cities
  -s, --sort low / high      Sort by confirmed cases.