4 layers43.1 × 37.7 mm
Machine Controller
FinnKrass/MX-Break-In-Machine
64 Slot Break In Machine for MX Style Switches
84 parts15CERN-OHL-S-2.0
2 layers43 × 47 mm
BKL2x
xD90o1/BKLx22 key keypad
- Size
- 43 × 47 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 21
- Nets
- 43
- Pads
- 127
- Tracks, vias
- 203, 11
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 7 Aug 2024
- Updated
- 7 Aug 2024
Overview
BKL2x is an open-source printed circuit board by xD90o1, from the xD90o1/BKLx2 repository on GitHub. It is a 2-layer board of 43 × 47 mm with 21 parts on 43 nets, routed with 203 tracks and 11 vias.
It is built around the ATMEGA32U4-MU and SS34B. Its parts include 8 capacitors, 6 resistors, 2 diodes, 2 switches and 1 IC. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2Parts
21| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 100nF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3 |
| 2 | 15pF | Capacitor_SMD:C_0402_1005Metric | C4, C5 |
| 2 | 22R | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | 5pF | Capacitor_SMD:C_0402_1005Metric | C7, C8 |
| 2 | SS34B | Diode_SMD:D_SMB | D1, D2 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 1M | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 1uF | Capacitor_SMD:C_0402_1005Metric | C6 |
| 1 | 8MHz | Crystal:Crystal_SMD_HC49-SD | Y1 |
| 1 | ATmega32U4-MU | Package_DFN_QFN:QFN-44-1EP_7x7mm_P0.5mm_EP5.2x5.2mm | U1 |
| 1 | KC_X | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW2 |
| 1 | KC_Z | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_XKB_U262-16XN-4BVC11 | J1 |
Questions
How big is the BKL2x PCB?
It measures 43 × 47 mm and has 2 copper layers, 1.6 mm thick.
What parts does the BKL2x use?
21 parts, built around the ATMEGA32U4-MU and SS34B. 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.
Where can I download the BKL2x KiCad files?
From the xD90o1/BKLx2 repository on GitHub, at the commit this page was made from: the board is BKL2x/BKL2x.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the BKL2x design in my own project?
Its repository states no licence, so its author keeps all rights: ask xD90o1 before reusing the design.
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