Sync visuals with your audio output
Bluetooth audio has a delay between when a signal is sent and when it reaches your Tesla coil. This tool measures that delay so the app can compensate, keeping visuals and lightning in sync.
The app plays a test tone and asks you to tap when you hear it. By measuring the difference, it calculates your Bluetooth latency.
Recalibrate if you change Bluetooth devices, notice the lightning is out of sync with on-screen visuals, or switch audio outputs.
For playing through your phone's built-in speaker. No latency compensation needed.
The app will play 8 clicks. Tap the screen each time you hear a click.
Fine-tune the speaker offset.
Phone speakers have minimal latency, so little or no offset is needed. Calibrate here if visuals feel slightly out of sync.
Calibration is one of the most important practical steps for musical Tesla coil playback, especially when Bluetooth audio is involved. This page helps align the timing between what you hear, what you see on screen, and what your interrupter delivers to the coil.
That makes it relevant both as a setup tool and as a public reference page for people searching for Tesla coil Bluetooth sync, latency calibration, or ways to reduce timing drift in singing Tesla coil performance.