2 layers243.9 × 136.5 mm
Barobord
sadekbaroudi/barobord
I have spent a lot of time and money designing prototypes, testing, developing, etc. Any contributions would be greatly appreciated!
157 parts57
2 layers
Kbdpcb m-2
prohe19/Second-PCB-attemptwell here we go my second attempt of creating PCB of mechanical keyboard
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 56
- Nets
- 72
- Pads
- 280
- Tracks, vias
- 132, 18
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 18 Jun 2021
- Updated
- 18 Jun 2021
Overview
Kbdpcb m-2 is an open-source printed circuit board by prohe19, from the prohe19/Second-PCB-attempt repository on GitHub. It is a 2-layer board with 56 parts on 72 nets, routed with 132 tracks and 18 vias.
It is built around the ATMEGA32U4-AU and PRTR5V0U2X. Its parts include 17 diodes, 8 capacitors, 6 resistors, 2 ICs and 2 switches. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA32U4-AU
QFP-44(10x10)-40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH QFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
PRTR5V0U2X
SOT-143-55℃~+125℃ 0.3pF、0.8pF 100W 10V、15V 5V 6.5V 6A 80nA ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Three channels Unidirectional SOT-143 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
README
README.mdSecond-PCB-attempt
well here we go my second attempt of creating PCB of mechanical keyboard
I supposed we'll call it a numpad board? well because it only consists of 17 MX only hotswap switches (finally using matrix yeay!!)
this time on my second attempt I tried to include a rotary encoder so that you use to control volume on your pc, scroll up or down and many more! also I included an 9.1 OLED LCD display why? I believe the right term to desribe it is just for "fun" :D well you can use the LCD display to display the capslock on or just to display silly small pictures on your numpad board.
This version is still not fixed, might change more in the future because Im still not happy with the componen placements. Again, my priority is AESTHETIC of the PCB sooo it takes me such a loonnggggggg time to design this.
Pros
-HOTSWAPABLE!!!!!!
-rotary encoder
-OLED LCD display
Cons
-no RGB :(
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | D_Small | Diode_SMD:D_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8, D10, D11, D12, D13, D14, D15, D16, D17 +1 |
| 14 | MX-NoLED | MX_Only:MXOnly-1U-Hotswap | MX1, MX2, MX3, MX4, MX6, MX7, MX8, MX9, MX10, MX11, MX12, MX13, MX14, MX15 |
| 4 | 22pF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C4 |
| 3 | 0.1uF | Capacitor_SMD:C_0805_2012Metric | C5, C6, C7 |
| 3 | MX-NoLED | MX_Only:MXOnly-2U-Hotswap | MX5, MX16, MX17 |
| 2 | 10K | Resistor_SMD:R_0805_2012Metric | R1, R4 |
| 2 | 22K | Resistor_SMD:R_0805_2012Metric | R2, R3 |
| 2 | 5k1 | Resistor_SMD:R_0805_2012Metric | R6, R7 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C8 |
| 1 | 16MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | ATmega32U4-AU | Package_QFP:TQFP-44_10x10mm_P0.8mm | U1 |
| 1 | Conn_01x04 | OLED:Oled_Screen | J1 |
| 1 | HRO-TYPE-C-31-M-12 | Type-C:HRO-TYPE-C-31-M-12-Assembly | USB1 |
| 1 | PRTR5V0U2X | locallib:SOT143B | U2 |
| 1 | Polyfuse_Small | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | Rotary_Encoder | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW2 |
| 1 | SW_Push | random-keyboard-parts:SKQG-1155865 | SW1 |
Questions
What parts does the Kbdpcb m-2 use?
56 parts, built around the ATMEGA32U4-AU and PRTR5V0U2X. 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 Kbdpcb m-2 KiCad files?
From the prohe19/Second-PCB-attempt repository on GitHub, at the commit this page was made from: the board is kbdpcb m-2.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Kbdpcb m-2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask prohe19 before reusing the design.
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