I'm an Electrical Engineer having experience in embedded system, robotics and control system. I'm expert in followings gadget.
> Coding for arduino, ESP8266, raspberry pi ( completely understandable with descriptive names and comments)
> Controlling of switching devices (relays, transistors)
> Controlling of motors (stepper, servo , DC BLDC)
> Sensors ( a long list) esppecially related to robotics
> UAVs ( Drones, autonomous drones, Fixed wings)
> Electrical Energy monitoring
> Wireless communication (using different transceivers) for wireless Robot Controlling
> Bluetooth, wifi, RF
> Schematics , PCB (Eagle, Proteus, fritzing)