so tinkercad has circuit designand arduno now, a real arduino is $20, IDE is free, fritzing is free and does all the exact same layout stuff locally, you save your files and keep them forever.

The Arduino itself requires only 5V to operate but considering the fact that it has to power three ultrasonic sensors, one piezo-electric buzzer & a vibrating motor we have used a 9V supply. Arduino ...

Our Smart Home Using Arduino Uno R4 WiFi project is designed for home safety and convenience, integrating temperature, humidity, light, and gas monitoring. Using sensors like DHT11/DHT22, LDR, and ...

Circuit and working of Optical Theremin Musical Instrument. Arduino-based theremin wired on a breadboard is shown in Fig. 2. The components required are Arduino Uno, buzzer, 1-kilo-ohm resistor, light ...