Adafruit NeoPixel Library Compatibility
Control addressable RGB LEDs with the AVR timing implementation.
- Pinned version
- 1.15.5
- Last matching compile evidence
- 2026-10-25
- Toolchain
- avr-gcc-wasm@0.2.0
- Primary headers
- Adafruit_NeoPixel.h, rp2040_pio.h
Dependencies and practical limits
Control addressable RGB LEDs with the AVR timing implementation.
Timing and board clock matter; select the actual AVR profile before compiling.
LED strips need rated power/current handling and common ground. A compile result is not an electrical certification.
No additional catalog dependencies are required.
For a missing header, first compare the include to the example below. For an undeclared identifier, inspect the first diagnostic and selected board rather than changing every library version.
Board compile matrix
These are recorded compile/link results for the current build and exact source hash. UNTESTED means no matching proof, not an assumed pass. Memory values belong to the listed example and exclude runtime stack/heap or dynamic buffers.
| Board/profile | Result | Flash bytes | Static SRAM bytes | Last tested |
|---|---|---|---|---|
| Arduino Uno R3 — ATmega328P | PASS | 3270 | 41 | 2026-10-25 |
| Arduino Nano V3 — ATmega328P (new bootloader) | PASS | 3270 | 41 | 2026-10-25 |
| Arduino Nano V3 — ATmega328P (old bootloader) | PASS | 3270 | 41 | 2026-10-25 |
| ATmega328PB — 16 MHz | PASS | 3456 | 41 | 2026-10-25 |
| Arduino Mega 2560 — ATmega2560 | PASS | 3880 | 41 | 2026-10-25 |
| Arduino Leonardo — ATmega32U4 · native USB | PASS | 6646 | 182 | 2026-10-25 |
| Arduino Micro — ATmega32U4 · native USB | PASS | 6648 | 182 | 2026-10-25 |
| Arduino Pro Mini — 5 V · 16 MHz | PASS | 3270 | 41 | 2026-10-25 |
| Arduino Pro Mini — 3.3 V · 8 MHz | PASS | 3716 | 41 | 2026-10-25 |
Build: e0f6d304cce4ae0a0989a9b1300cbc1a21a595e5e3e7f57ed0ab3468ecf7940b. Library source hash: b05e962e1ed8cb79907f40f3d40057be30c5798aba99c4c5092eee2ad0da7ce2. Compilation does not certify physical peripherals, timing or USB upload.
NeoPixel example
This is the actual pinned example available in Circuitera. Pin choices and wiring in a general example use Uno unless otherwise stated; review the selected board reference for other targets.
#include <Adafruit_NeoPixel.h>
Adafruit_NeoPixel pixels(8, 6, NEO_GRB + NEO_KHZ800);
void setup() { pixels.begin(); pixels.setBrightness(20); }
void loop() {
for (uint16_t i = 0; i < pixels.numPixels(); i++) {
pixels.clear(); pixels.setPixelColor(i, pixels.Color(0, 80, 180));
pixels.show(); delay(120);
}
}
Projects using Adafruit NeoPixel
No validated public tutorial currently uses this library. The example demonstrates compilation; no working simulator peripheral or hardware project is implied.
Upstream source and documentation ↗
Pinned source archive (1.15.5) ↗
Read the test methodology →