NeoPixel rings, sticks, jewel, matrices and RGB LED matrix panels — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/adafruit-neopixel-rings-matrices/ (CC BY 4.0) Basis: Adafruit CAD (MIT): NeoPixel Ring 12 = Ø36.8 mm OD / 23.3 ID, Ring 16 = Ø44.5 / 31.7, Ring 24 = Ø66 / 52.3, Jewel Ø23, Stick 51 × 10.2 mm, NeoMatrix 8×8 71 × 71 mm; RGB matrix panels 64×32 at 4 mm pitch = 256 × 128 mm Catalog version: 2026-10-20 Sizes: see table below - Rings: 12-pixel Ø36.8 outside / Ø23.3 inside; 16-pixel Ø44.5 / Ø31.7; 24-pixel Ø66 / Ø52.3; 1.6 mm PCB plus 1.6 mm LEDs (5050 package, 5 × 5 mm). Jewel (7 px) Ø23 mm. Triple ring board 108 mm OD. - Stick (8 px): 51 × 10.2 mm, holes Ø1.5 at the ends. NeoMatrix 8×8: 71 × 71 mm, LEDs on 8.9 mm pitch. NeoTrellis 4×4: 60 × 60 mm, 15 mm button pitch. NeoKey 1×4: 76 × 21 mm, 19.05 mm key pitch. - RGB matrix panels: 64×32 pixels at 4 mm = 256 × 128 mm, at 5 mm = 320 × 160 mm, at 2.5 mm = 160 × 80 mm; 4 × M3 holes near the corners plus centre holes, 14 mm deep with the driver boards. product bbox_l_mm bbox_w_mm bbox_h_mm 2643 NeoPixel Ring 12 36.8 36.8 3.0 1463 16x NeoPixel Ring 44.5 44.5 3.3 1586 NeoPixel Ring 24x 65.5 65.5 3.0 2226 NeoPixel Jewel 23.0 23.0 2.5 1426 8x NeoPixel Stick 50.8 10.2 2.6 1487 NeoMatrix 8x8 71.1 71.1 3.0 4222 NeoPixel Triple-Ring Board 66.0 66.0 6.6 3954 Adafruit NeoTrellis 60.0 60.0 7.6 4980 NeoKey 1x4 QT 76.2 21.6 4.5 2278 RGB Matrix 4mm 255.0 128.0 13.5 2277 RGB Matrix 5mm 320.0 160.0 17.7 5036 RGB Matrix 2.5mm 160.0 80.0 17.5 5210 LED Glasses IS31FL3741 147.0 62.9 4.5 5646 NeoPixel Grid 5x5 BFF 20.7 17.8 2.9 5975 NeoPixel Breakout 12.2 11.4 5.9 1376 NeoPixel Strip 224.0 12.0 1.7 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Adafruit (official): Adafruit_CAD_Parts: STEP, Fusion 360 and STL for Adafruit products — STEP, F3D, STL — MIT — https://github.com/adafruit/Adafruit_CAD_Parts Free files (MIT License (Adafruit_CAD_Parts), Adafruit Industries; STEP + STL, 16 parts): https://xemstudio.com/files/adafruit/adafruit-neopixel-rings-matrices/index.json API: https://xemstudio.com/api/geometry?object=adafruit-neopixel-rings-matrices