Arduino Demos
This demo uses a micro SD card reader (and card), some limit switches, an amplifier module, and a speaker to play four different songs.
This demo uses a Hall Effect Sensor and an interrupt to measure the RPM of a gearmotor. The motor speed and direction are controlled with an H-bridge and potentiometer, and the RPM is shown on a 4-digit LED display.
This demo uses an voltage regulator to step a 12V input down to 6V which is then used to power a servo motor. The motor position is controlled with a potentiometer.
This demo uses a joystick to control the motion of two different kinds of stepper motors.
This demo uses a beam-break sensor and a relay to turn on/off a wall-outlet device (Christmas tree lights).
This demo controls RGB strip LEDs remotely with a keypad.
This demo shows how multiple Arduino boards can communicate with each other using the I2C protocol.
The demo shows how to use an LCD display with an I2C module and an interrupt.