Two ways to get this onto a board: copy the sketch below into Arduino IDE, or use the Program button. The Program button does not compile this code — it flashes a prebuilt player firmware with your pattern data patched in. Both produce the same LED behavior.
Pattern: Breathe
Cycle: 3.00s
64 samples
No wiring needed. Nano R4 maps LED_BUILTIN to internal pin 22—not D13—so this uses software PWM.
Experimental browser flashing. Automated tests use simulated devices; reliable uploads on physical boards have not yet been confirmed for this release.
Programs the current curve directly through Chrome/Edge USB DFU.
This overwrites the sketch currently on the board. If prompted, double-tap Reset to enter DFU mode, then click again.