Works with the HC-SR04 ultrasonic sensor in the 3 Pin Mode/4 Pin Mode, the Ping))) ultrasonic sensor in the 3 Pin Mode and the DHT temperature/humidity sensors for getting precise distance values. !

When using the attachInterrupt() function set Pullups/Pulldowns are reset, the Pin is left floating. When setting the pinMode after attaching the interrupt, it does work fine. However this is ...

Circuit Diagram. The complete circuit diagram this Arduino Function Generator is shown below. As you can see we have an Arduino Nano which acts as the brain of our project and an 16x2 LCD to display ...

A push button is wired to ground and connected to pin D10 of the Arduino. When the button (SW1) is pressed, the calculator switches to scientific mode, displaying ‘scientific mode’ on the OLED screen.

You have to pull an extra wire from the sensor’s input voltage to your Arduino’s AREF pin, so you know what the actual voltage at the end of the cable is, so you can estimate the 10-90% range.