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

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@hackyday hackyday released this 06 Oct 17:33
v1.0.0
90891a0

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)
Assets 8
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