News
1.) Orange Pi 4G-IoT LTE is available on aliexpress for 45 USD
2.) Original Arduino board with ESP32 (MKR WiFi 1010) and board for NB-IoT (MKR NB 1500)
3.) Really small ESP32 PICO D4 module for 4.70 USD
Articles
1.) Development board with STM32F030F4P6 and programming (CubeMX and AC6)
2.) STM32duino III. – How to use Serial (USART)
3.) STM32duino I. – How to start with STM32 like Arduino
Videos
1.) How to set internet on Raspberry Pi 3B+
2.) Eagle CAD – export fabrication gerber data (seeedstudio, allpcb, jlcpcb)