Arduino is an open source hardware project which means anyone can build and sell boards based off of the Arduino design. This is good because other manufacturers can sell boards for a fraction of the cost of a genuine Arduino board, but the downside is that quality assurance on cheaper boards can be lacking.
With an HC-SR04 and a Piezo Buzzer you can create an audio distance sensor like the one many cars have for backing up. Functional Parts in the Project: Arduino Uno – https://store.arduino.cc/usa/arduino-uno-rev3 HC-SR204 Ultrasonic Sensor – https://amzn.to/31AGgYC […]
The IoT Relay from Digital Loggers Inc allows to easily and safely control standard american powered appliances such as fans, dehumidifiers, pumps and such. It is important to realize how the 4 power ports work. […]