2 layers243.2 × 106 mm
2 layers237.3 × 177.3 mm
BTKeyboardAttempt
StarLizard/First-Keyboard-attemptfirst attempt at a BT keyboard after not understanding electrical engineering.
- Size
- 237.3 × 177.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 139
- Nets
- 126
- Pads
- 802
- Tracks, vias
- 715, 75
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 30 Aug 2024
- Updated
- 3 Sep 2024
Overview
BTKeyboardAttempt is an open-source printed circuit board by StarLizard, from the StarLizard/First-Keyboard-attempt repository on GitHub. It is a 2-layer board of 237.3 × 177.3 mm with 139 parts on 126 nets, routed with 715 tracks and 75 vias.
It is built around the ATMEGA32U4-AU. Its parts include 60 diodes, 7 capacitors, 6 resistors, 3 connectors and 1 IC. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdTrying to design my own Bluetooth Keyboard pcb with Hotswap MX Switches
Parts
139| Qty | Value | Footprint | References |
|---|---|---|---|
| 60 | D_Small | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +44 |
| 60 | MX_SW_HS | PCM_marbastlib-mx:SW_MX_HS_CPG151101S11_1u | MX1, MX2, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23 +44 |
| 3 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C2, C3, C4 |
| 2 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R4 |
| 2 | 22 | Resistor_SMD:R_0805_2012Metric | R2, R3 |
| 2 | 22pF | Capacitor_SMD:C_0805_2012Metric | C6, C7 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric | R5, R6 |
| 2 | Conn_01x17_Socket | Connector_PinHeader_1.00mm:PinHeader_1x17_P1.00mm_Horizontal | J2, J3 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | ATmega32U4-A | Package_QFP:TQFP-44_10x10mm_P0.8mm | U2 |
| 1 | Crystal_GND24_Small | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | SW_Push | random-keyboard-parts:SKQG-1155865 | SW1 |
| 1 | USB_C_Receptacle | Connector_USB:USB_C_Receptacle_Amphenol_12401548E4-2A | J1 |
Questions
How big is the BTKeyboardAttempt PCB?
It measures 237.3 × 177.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the BTKeyboardAttempt use?
139 parts, built around the ATMEGA32U4-AU. 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 BTKeyboardAttempt KiCad files?
From the StarLizard/First-Keyboard-attempt repository on GitHub, at the commit this page was made from: the board is BTKeyboardAttempt.kicad_pcb and its schematic BTKeyboardAttempt.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BTKeyboardAttempt design in my own project?
Its repository states no licence, so its author keeps all rights: ask StarLizard before reusing the design.
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