v1.0.0 — FLIP fluid on the Codey Rocky LED matrix

First release of the FLIP fluid simulation for the Makeblock Codey Rocky 16x8 LED matrix, driven by the IMU.

Flash the prebuilt binaries

Option A — single merged binary, with esptool over USB:

esptool --chip esp32 --baud 921600 write_flash 0x0 merged-firmware-4MB.bin

Option B — PlatformIO (recommended, lets you tweak and rebuild):

1. Install VS Code + the PlatformIO extension
2. Clone this repository and open the folder
3. Plug the Codey Rocky in via USB and click Upload

If upload fails: hold button C, tap the power button, then Upload again (GPIO0 / button C is the ESP32 boot strap).

Controls

Action	Effect
Tilt	water flows to the low side, sloshes and pools there
Shake / jerk	the water churns and splashes on its own
Knob	faucet — new water pours in from the bottom edge
Button A	splash burst (adds particles)
Button B	drain some water
Hold A at boot	hardware test mode: every button & sensor (matrix, buttons, RGB LED, knob, light, sound, battery/HW version, IMU, speaker, IR, Rocky base)

Assets

• merged-firmware-4MB.bin — single flashable image at offset 0x0 (bootloader + partitions + firmware)
• bootloader.bin 0x1000, partitions.bin 0x8000, boot_app0.bin 0xe000, firmware.bin 0x10000 — separate images for esptool
• firmware.elf — debug symbols (e.g. for exception backtraces)

Build stats

• RAM: 10.6% (34.7 KB / 320 KB)
• Flash: 17.7% (347.8 KB / 1.9 MB)
• Built with PlatformIO 6.1, platform espressif32, arduino-esp32 3.3.6, esp32dev @ 240 MHz

Credits

• FLIP algorithm: Matthias Müller, "Ten Minute Physics"
• Reference LED implementation: Nicholas-L-Johnson/flip-card
• CodeyRocky library vendored in lib/ (GPL-2.0-or-later)