ASTRID
Audio Signal Triggers Red Illuminated Display
Not connected
This page needs Chrome or Edge on a computer. It talks to ASTRID over USB with Web Serial, which Safari and Firefox don't support.
–dBu
Waiting for signal
−40−200+10
The panel lights when the level passes the white marker. Lower it to react to quieter signals.
Timing
Stays lit this long after the audio stops.
0 s switches instantly.
Calibration
Send a tone at a known level, say 0 dBu, and move this until the reading matches.