Pulse-width modulation,as it applies to LED control, is a way of delivering energy ... Note: Pin D9 on the Arduino is not the same pin 9 on the ATmega328 IC. Pin 15 on the IC is actually the pin for ...

So, if you want to regulate LED brightness linearly to your eye, it requires some clever thoughts and adaptations. First, upload the following PWM sketch to your Arduino Uno r3/Nano v3 and connect a ...

Let it hit your red LED and you’ve lost a point ... Inside the cool laser-cut box is an Arduino Uno and a 9V battery, plus a current-limiting resistor and the all-important buzzer.

a status RGB LED and a Charing Module! (And possibly a WIFI module – See “Stretch goals”-section). Upload your own codes or load sketches or images from a Micro SD card.” The tiny Arduino ...