Beep my Quad — MIDI to Bluejay ESC Melody Converter for FPV Drones

1. Load MIDI

Drop in any standard .mid file. Parsing happens locally in your browser — your file never leaves your device.

2. Tracks

Pick which MIDI tracks feed the converter. Unselected tracks are ignored. Multiple selected tracks get merged and then distributed across the chosen number of motor outputs.

3. Time window (seconds)

Convert only a slice of the song. Start = 0, end ≤ song length. Useful for fitting a hook or chorus into Bluejay's 128-byte budget.

Start First second of the song to include. End Last second to include. Cannot exceed the song length.

4. Options

Outputs (motors) Number of independent RTTTL melodies generated. Typical quad = 4. Hex = 6. Octocopter = 8. Each motor plays one monophonic voice. Tempo (BPM) Playback tempo written into the RTTTL header. Auto-filled from the MIDI's first tempo event. Default duration RTTTL's d= header value (4 = quarter note). Notes matching this duration omit a length prefix, saving bytes. Default octave RTTTL's o= header value. Notes in this octave omit the octave digit, saving bytes. Octave shift Shift every note up/down by N octaves before mapping. Use this if your MIDI sits below octave 4 or above octave 7 (Bluejay's playable range). Max notes / output Hard cap per motor. Bluejay's flash budget is ~62 notes (128 bytes ÷ 2 bytes/note − header). Excess notes are dropped. Name prefix RTTTL melody name. With multiple outputs the motor number is appended (e.g. song1, song2). Allow dotted notes Permit dotted durations (1.5×). Improves rhythmic accuracy but uses one extra byte per dotted note. Skip very short rests Drops rests shorter than a 64th note. Keeps output tight and saves notes. Prefer track-to-motor affinity When picking a free motor, prefer the one that last played a note from the same MIDI track. Keeps each track's melody flowing through the same ESC.

5. Outputs

One RTTTL string per motor. Paste each into the matching ESC slot in esc-configurator.com's Melody Editor.

How to flash the melodies

⚠️ Connect a flight battery to your quad before plugging the flight controller into your computer. The ESCs need to be powered to receive new melodies — USB alone does not power them.

Connect the flight battery to your quad, then plug the flight controller into your PC via USB.
Open esc-configurator.com, connect the flight controller, select your Bluejay ESCs.
Open Melody Editor. Paste each motor's RTTTL into the matching ESC slot, click Accept.
Click Write Melodies. Reboot the quad — your motors now sing your song on arming.

Bluejay reserves 128 bytes per ESC for the startup melody — roughly 62 notes. Longer songs get auto-trimmed.