This Lamp Visualizes the Electromagnetic Storm We Live In
"You're in the eye of a storm," says YouTuber Rootkid. "But what if you could see it?"
He's talking about the invisible electromagnetic radiation that surrounds us, specifically the 2.4 GHz to 5 GHz frequency range. These frequencies carry data between our wireless devices, from Wi-Fi to Bluetooth and microwave ovens. But what if we could make this invisible storm visible?
Rootkid built a device called the "Spectrum Slit," a wall-mounted visualizer that brings the electromagnetic storm to life. It's based on a HackRF 1, a software-controlled radio that can monitor a wide range of frequencies. This radio is connected to a Raspberry Pi, which runs Rootkid's custom software. The software divides the 2.4 GHz to 5 GHz band into 64 sections, each controlling the brightness of a warm yellow LED strip. The stronger the signal, the brighter the strip.
The result is a supersized graphic equalizer, but with a twist. The coils containing the LED driver circuits vibrate slightly, producing an audible hum. The pitch of this hum changes with the amount of traffic in the frequency range each LED strip monitors. As Rootkid explains, "You can hear each burst of data... it's actually pretty disturbing."
In his video, Rootkid monitors the device over a day. He sees network traffic ebb and flow, then the entire spectrum lights up as neighbors return home. The video ends with Rootkid standing in a room bathed in warm yellow light, contemplating his creation. "We live surrounded," he muses, "by the ghosts of our own making."
This lamp is both a beautiful piece of art and a fascinating insight into the world of wireless communication. It challenges us to consider the invisible forces that shape our digital lives.
