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

KiCad Project: Double-balanced mixer
KC1FSZ DBM-1 is an open-source printed circuit board by brucemack, from the brucemack/KC1FSZ-DBM-1 repository on GitHub. It is a 2-layer board of 39.4 × 23.5 mm with 14 parts on 14 nets, routed with 50 tracks and 5 vias.
Its parts include 4 resistors, 3 capacitors, 2 diodes and 1 connector.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | R | kc1fsz-footprint-library:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2, R3, R4 |
| 3 | C | kc1fsz-footprint-library:C_Disc_D4.7mm_W2.5mm_P5.00mm | C1, C2, C3 |
| 2 | D_Schottky_x2_Serial_CAK | kc1fsz-footprint-library:SOT-23_Handsoldering | D1, D2 |
| 2 | Transformer_1P_2S | kc1fsz-footprint-library:TrifilarTransformer_T37_Vertical | T1, T2 |
| 1 | Conn_01x05 | Pin_Headers:Pin_Header_Straight_1x05_Pitch2.54mm | J1 |
The 12 most common of 14 parts.

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


hackclub/OnBoard
💡 Join 1,000 teenagers and make your first PCB with a $100 grant!



Twotoz/C5VRX
Ultra-minimal, zero-CPU 5.8 GHz analog FPV video receiver using ESP32-C5 Wi-Fi 6 PHY MODEM_DIAG, BitScrambler WBFM demodulation & resistor DAC CVBS


It measures 39.4 × 23.5 mm and has 2 copper layers, 1.6 mm thick.
14 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 brucemack/KC1FSZ-DBM-1 repository on GitHub, at the commit this page was made from: the board is KC1FSZ-DBM-1.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 brucemack before reusing the design.