After uploading the sketch, open the Arduino Serial Monitor (Tools > Serial Monitor). The sketch will automatically detect the I2C address of the connected LCD module and initialize it. You should see ...

Posted in Radio Hacks Tagged arduino, ham, lcd, signal visualizer, waterfall ← How To Build Your Own Pulsed Laser Pistol Scavenging Ambient Electromagnetic Energy → ...

The LCD panel can be used with any Arduino-compatible board, so it can be useful in a whole host of projects. Stick around to see a simple demo of the board in use.