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Adafruit QT Py, ItsyBitsy, Trinket, GEMMA and Trinkey boards
What are the QT Py and ItsyBitsy board dimensions? · Modern device · basis: Adafruit CAD (MIT): QT Py 21.8 × 17.8 mm (0.86 × 0.7 in), ItsyBitsy 36 × 18 mm (1.4 × 0.7 in), Trinket M0 27 × 15.3 mm, GEMMA M0 Ø27.9 mm
- sizes
- 18 in table
Notes
- QT Py (every variant: SAMD21, RP2040, ESP32-S2/S3/C3/PICO): 21.8 × 17.8 mm, USB-C at one end, STEMMA QT JST SH at the other, no mounting holes; cases hold it by the edge with a 0.3 mm lip.
- ItsyBitsy: 36 × 18 mm, 28 pins on 2.54 mm pitch, no holes. Trinket M0: 27 × 15.3 mm with two Ø2.5 holes. GEMMA M0: Ø27.9 mm round with three large sew pads.
- Trinkeys are USB-A plug boards (~34 × 18 mm with the plug); KB2040 is a Pro Micro footprint (33 × 18 mm, 24 pins).
Sizes
| product | bbox_l_mm | bbox_w_mm | bbox_h_mm |
|---|---|---|---|
| 4600 QT Py | 21.8 | 17.8 | 6.3 |
| 4900 QTPy RP2040 | 21.8 | 17.8 | 5.9 |
| 5426 QT Py ESP32-S3 | 21.8 | 17.8 | 5.9 |
| 5395 QT Py ESP32 PICO | 21.7 | 17.8 | 5.6 |
| 5325 QTPy ESP32S2 | 21.7 | 17.8 | 5.9 |
| 5405 QTPy ESP32 C3 | 21.7 | 17.8 | 5.9 |
| 3800 ItsyBitsy M4 | 36.0 | 17.8 | 4.3 |
| 4888 ItsyBitsy RP2040 | 36.1 | 17.8 | 4.3 |
| 4481 ItsyBitsy nRF52840 | 36.2 | 17.8 | 5.7 |
| 5889 ItsyBitsy ESP32 | 36.1 | 17.8 | 7.4 |
| 3500 Trinket M0 | 27.2 | 15.2 | 3.6 |
| 3501 GEMMA M0 | 28.0 | 27.9 | 6.4 |
| 5302 KB2040 | 34.2 | 17.8 | 4.8 |
| 4870 Neo Trinkey | 31.7 | 12.1 | 3.9 |
| 4964 Rotary Trinkey | 32.4 | 30.4 | 16.5 |
| 5020 NeoKey Trinkey | 31.6 | 19.2 | 16.5 |
| 5056 Trinkey QT2040 | 38.1 | 19.7 | 5.5 |
| 5953 Pixel Trinkey | 40.2 | 15.2 | 12.0 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Adafruit (official) | Adafruit_CAD_Parts: STEP, Fusion 360 and STL for Adafruit products | STEP, F3D, STL | MIT |
Free files
★ Free files 18 parts. Direct links to Adafruit Industries's own repository; nothing rehosted. MIT License (Adafruit_CAD_Parts). index.json
| 4600-qt-py | Adafruit #4600 QT Py; bbox 21.8 × 17.8 × 6.3 mm; 2.3 MB on GitHub | STEP · STL |
| 4900-qtpy-rp2040 | Adafruit #4900 QTPy RP2040; bbox 21.8 × 17.8 × 5.9 mm; 1.9 MB on GitHub | STEP · STL |
| 5426-qt-py-esp32-s3 | Adafruit #5426 QT Py ESP32-S3; bbox 21.8 × 17.8 × 5.9 mm; 1.4 MB on GitHub | STEP · STL |
| 5395-qt-py-esp32-pico | Adafruit #5395 QT Py ESP32 PICO; bbox 21.7 × 17.8 × 5.6 mm; 2.1 MB on GitHub | STEP · STL |
| 5325-qtpy-esp32s2 | Adafruit #5325 QTPy ESP32S2; bbox 21.7 × 17.8 × 5.9 mm; 2.7 MB on GitHub | STEP · STL |
| 5405-qtpy-esp32-c3 | Adafruit #5405 QTPy ESP32 C3; bbox 21.7 × 17.8 × 5.9 mm; 1.9 MB on GitHub | STEP · STL |
| 3800-itsybitsy-m4 | Adafruit #3800 ItsyBitsy M4; bbox 36.0 × 17.8 × 4.3 mm; 2.6 MB on GitHub | STEP · STL |
| 4888-itsybitsy-rp2040 | Adafruit #4888 ItsyBitsy RP2040; bbox 36.1 × 17.8 × 4.3 mm; 1.9 MB on GitHub | STEP · STL |
| 4481-itsybitsy-nrf52840 | Adafruit #4481 ItsyBitsy nRF52840; bbox 36.2 × 17.8 × 5.7 mm; 1.9 MB on GitHub | STEP · STL |
| 5889-itsybitsy-esp32 | Adafruit #5889 ItsyBitsy ESP32; bbox 36.1 × 17.8 × 7.4 mm; 3.2 MB on GitHub | STEP · STL |
| 3500-trinket-m0 | Adafruit #3500 Trinket M0; bbox 27.2 × 15.2 × 3.6 mm; 2.0 MB on GitHub | STEP · STL |
| 3501-gemma-m0 | Adafruit #3501 GEMMA M0; bbox 28.0 × 27.9 × 6.4 mm; 2.6 MB on GitHub | STEP · STL |
| 5302-kb2040 | Adafruit #5302 KB2040; bbox 34.2 × 17.8 × 4.8 mm; 2.2 MB on GitHub | STEP · STL |
| 4870-neo-trinkey | Adafruit #4870 Neo Trinkey; bbox 31.7 × 12.1 × 3.9 mm; 1.2 MB on GitHub | STEP · STL |
| 4964-rotary-trinkey | Adafruit #4964 Rotary Trinkey; bbox 32.4 × 30.4 × 16.5 mm; 1.5 MB on GitHub | STEP · STL |
| 5020-neokey-trinkey | Adafruit #5020 NeoKey Trinkey; bbox 31.6 × 19.2 × 16.5 mm; 0.9 MB on GitHub | STEP · STL |
| 5056-trinkey-qt2040 | Adafruit #5056 Trinkey QT2040; bbox 38.1 × 19.7 × 5.5 mm; 0.9 MB on GitHub | STEP · STL |
| 5953-pixel-trinkey | Adafruit #5953 Pixel Trinkey; bbox 40.2 × 15.2 × 12.0 mm; 2.5 MB on GitHub | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=adafruit-qt-py-itsybitsy-trinket
Fits with
Questions
What are QT Py dimensions?
21.8 × 17.8 mm, about 5 mm tall with the USB-C and STEMMA QT connectors; no mounting holes, same outline as the Seeed XIAO.
Does the QT Py fit XIAO cases?
The outline is the same 21 × 17.8 mm class and the castellated pins match; the STEMMA QT connector on the QT Py adds 1.5 mm at the back end, so check that side.
What are ItsyBitsy dimensions?
36 × 18 mm, 2.54 mm headers down both long edges, no mounting holes.