
Type e
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards

DIY quadcopter flight controller board.
Trifle is an open-source printed circuit board by project-condor, from the project-condor/trifle repository on GitHub. It is a 2-layer board of 80 × 58.4 mm with 16 parts on 19 nets, routed with 64 tracks and 11 vias.
Its parts include 6 switches, 5 connectors, 2 resistors, 2 ICs and 1 capacitor. It belongs with the robots and motor control boards and the NXP (LPC, Kinetis, i.MX RT) boards of this library.
Trifle is a flight controller board for quadcopters. As the name implies, the board itself does very little except breakout a microcontroller board and contain an intertial measurement unit.
The main active components contained on the board are:
The provided layout is such that the board can be hand-assembled on a perf-board. Ports include:
Currently work-in-progress, the goal is to provide support for the PX4 autopilot firmware.
Design files are licensed under a Creative Commons Attribution 4.0 International License.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | 100k | R1 | R1 |
| 1 | 220uF | CTOP | C1 |
| 1 | 33k | R1 | R2 |
| 1 | 5Vin | PIN_ARRAY_2X1 | P1 |
| 1 | ADAFRUIT-10DOF | adafruit-10dof | U2 |
| 1 | AUX0 | PIN_ARRAY_3X1 | K1 |
| 1 | AUX1 | PIN_ARRAY_3X1 | K2 |
| 1 | BATT | PIN_ARRAY_2X1 | P5 |
| 1 | DIST | PIN_ARRAY_4x1 | P4 |
| 1 | GPS | PIN_ARRAY_4x1 | P3 |
| 1 | M0 | PIN_ARRAY_3X1 | K3 |
| 1 | M1 | PIN_ARRAY_3X1 | K4 |
| 1 | M2 | PIN_ARRAY_3X1 | K5 |
| 1 | M3 | PIN_ARRAY_3X1 | K6 |
| 1 | TEENSY-3.1 | teensy-3.1 | U1 |
| 1 | TELE | PIN_ARRAY_4x1 | P2 |
It measures 80 × 58.4 mm and has 2 copper layers, 1.6 mm thick.
16 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the project-condor/trifle repository on GitHub, at the commit this page was made from: the board is kicad/trifle/trifle.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask project-condor before reusing the design.

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