How about a Spider who obeys the order to sit, dances when he sees a light and dodges obstacles? All this with the Arduino Nano 33 BLE Sense
A smart scarecrow on the field to keep a track of climatic condition. For need of irrigation/pesticides a drone will be sent to the field.
This study is an example how to build a 3-phases 230V/380V from a 12-24V DC with an Arduino Uno
The objective is to find an easy way to implement RS485 on an Arduino Uno, then to adapt it to an ESP8266.
A solar-powered IoT device for monitoring sound level, air quality, humidity, and temperature.