I deal with ;
- Raspberry pi, Banana pi, NanoPi NEO2 - Microcontroller programming using ESP32/ESP8266, Arduino, BLE/Bluetooth, WiFi, Ethernet, Zig-bee, GSM/GPS/GPRS, Z-Wave - Various LCDs & Sensors, I2C/I2S/SPI, RS232/485, Modbus, Lora, NFC/RFID - HMI programming - Various Servo/Motor control - Mobile app development for the Hardware Technologies; python, c ,c++ , Mysql, PHP, Flutter, NodeJS,nodeRED and mqtt