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 layers285.8 × 99.7 mm
Keyboard
otaboard/KeyboardAn Evil 60% PCB
- Size
- 285.8 × 99.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 144
- Nets
- 104
- Pads
- 805
- Tracks, vias
- 1,113, 167
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 9 Aug 2022
- Updated
- 18 Aug 2022
Overview
Keyboard is an open-source printed circuit board by otaboard, from the otaboard/Keyboard repository on GitHub. It is a 2-layer board of 285.8 × 99.7 mm with 144 parts on 104 nets, routed with 1,113 tracks and 167 vias.
It is built around the ATMEGA32U4-AU and PRTR5V0U2X. Its parts include 62 switches, 61 diodes, 8 capacitors, 6 resistors and 2 ICs. It belongs with the keyboards and input boards and 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)
Parts
144| Qty | Value | Footprint | References |
|---|---|---|---|
| 61 | 1N4148 | Diode_SMD:D_SOD-123 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +45 |
| 4 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C3, C4, C5 |
| 2 | 22 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3 |
| 2 | 22pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7, C8 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6 |
| 1 | # | MX_Alps_Hybrid:MX-1U | S40 |
| 1 | ' | MX_Alps_Hybrid:MX-1U | S39 |
| 1 | , | MX_Alps_Hybrid:MX-1U | S50 |
| 1 | - | MX_Alps_Hybrid:MX-1U | S12 |
| 1 | . | MX_Alps_Hybrid:MX-1U | S51 |
| 1 | / | MX_Alps_Hybrid:MX-1U | S52 |
| 1 | 0 | MX_Alps_Hybrid:MX-1U | S11 |
| 1 | 1 | MX_Alps_Hybrid:MX-1U | S2 |
| 1 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6 |
| 1 | 16MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | 1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | 2 | MX_Alps_Hybrid:MX-1U | S3 |
| 1 | 3 | MX_Alps_Hybrid:MX-1U | S4 |
| 1 | 4 | MX_Alps_Hybrid:MX-1U | S5 |
| 1 | 5 | MX_Alps_Hybrid:MX-1U | S6 |
| 1 | 500m | Fuse:Fuse_1206_3216Metric_Pad1.42x1.75mm_HandSolder | F1 |
| 1 | 6 | MX_Alps_Hybrid:MX-1U | S7 |
| 1 | 60@100MHz | Inductor_SMD:L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | FB1 |
| 1 | 7 | MX_Alps_Hybrid:MX-1U | S8 |
| 1 | 8 | MX_Alps_Hybrid:MX-1U | S9 |
| 1 | 9 | MX_Alps_Hybrid:MX-1U | S10 |
| 1 | ; | MX_Alps_Hybrid:MX-1U | S38 |
| 1 | = | MX_Alps_Hybrid:MX-1U | S13 |
| 1 | A | MX_Alps_Hybrid:MX-1U | S29 |
| 1 | ATmega32U4-A | Package_QFP:TQFP-44_10x10mm_P0.8mm | U1 |
| 1 | AVR-ISP-6 | random-keyboard-parts:Reset_Pretty-Mask | J1 |
| 1 | Alt | MX_Alps_Hybrid:MX-1.75U | S56 |
| 1 | AltGraph | MX_Alps_Hybrid:MX-1.25U | S59 |
| 1 | B | MX_Alps_Hybrid:MX-1U | S47 |
| 1 | Backspace | MX_Alps_Hybrid:MX-2U | S14 |
| 1 | C | MX_Alps_Hybrid:MX-1U | S45 |
| 1 | Caps | MX_Alps_Hybrid:MX-1U | S60 |
| 1 | Control | MX_Alps_Hybrid:MX-1.75U | S28 |
| 1 | D | MX_Alps_Hybrid:MX-1U | S31 |
| 1 | E | MX_Alps_Hybrid:MX-1U | S18 |
| 1 | Enter | MX_Alps_Hybrid:MX-ISO | S41 |
| 1 | Esc | MX_Alps_Hybrid:MX-1U | S1 |
| 1 | F | MX_Alps_Hybrid:MX-1U | S32 |
| 1 | G | MX_Alps_Hybrid:MX-1U | S33 |
| 1 | H | MX_Alps_Hybrid:MX-1U | S34 |
| 1 | HRO-TYPE-C-31-M-12 | Type-C:HRO-TYPE-C-31-M-12-HandSoldering | USB1 |
| 1 | Hyper | MX_Alps_Hybrid:MX-1.75U | S58 |
| 1 | I | MX_Alps_Hybrid:MX-1U | S23 |
| 1 | J | MX_Alps_Hybrid:MX-1U | S35 |
| 1 | K | MX_Alps_Hybrid:MX-1U | S36 |
| 1 | Kill | MX_Alps_Hybrid:MX-1U | S61 |
| 1 | L | MX_Alps_Hybrid:MX-1U | S37 |
| 1 | LShift | MX_Alps_Hybrid:MX-2U | S42 |
| 1 | M | MX_Alps_Hybrid:MX-1U | S49 |
| 1 | N | MX_Alps_Hybrid:MX-1U | S48 |
| 1 | O | MX_Alps_Hybrid:MX-1U | S24 |
| 1 | P | MX_Alps_Hybrid:MX-1U | S25 |
| 1 | PRTR5V0U2X | random-keyboard-parts:SOT143B | U2 |
| 1 | Q | MX_Alps_Hybrid:MX-1U | S16 |
| 1 | R | MX_Alps_Hybrid:MX-1U | S19 |
| 1 | RShift | MX_Alps_Hybrid:MX-2U | S54 |
| 1 | S | MX_Alps_Hybrid:MX-1U | S30 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_SKQG_WithStem | SW1 |
| 1 | Space | MX_Alps_Hybrid:MX-6.5U-ReversedStabilizers | S57 |
| 1 | Super | MX_Alps_Hybrid:MX-1.75U | S55 |
| 1 | T | MX_Alps_Hybrid:MX-1U | S20 |
| 1 | Tab | MX_Alps_Hybrid:MX-1.5U | S15 |
| 1 | U | MX_Alps_Hybrid:MX-1U | S22 |
| 1 | V | MX_Alps_Hybrid:MX-1U | S46 |
| 1 | W | MX_Alps_Hybrid:MX-1U | S17 |
| 1 | X | MX_Alps_Hybrid:MX-1U | S44 |
| 1 | Y | MX_Alps_Hybrid:MX-1U | S21 |
| 1 | Z | MX_Alps_Hybrid:MX-1U | S43 |
| 1 | [ | MX_Alps_Hybrid:MX-1U | S26 |
| 1 | \ | MX_Alps_Hybrid:MX-1U | S53 |
| 1 | ] | MX_Alps_Hybrid:MX-1U | S27 |
Questions
How big is the Keyboard PCB?
It measures 285.8 × 99.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keyboard use?
144 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 Keyboard KiCad files?
From the otaboard/Keyboard repository on GitHub, at the commit this page was made from: the board is Keyboard.kicad_pcb and its schematic Keyboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keyboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask otaboard before reusing the design.
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