2 layers61 × 61 mm
2 layers71.1 × 120.9 mm
Numpad
inexcomp/NumpadA9Programmable mechanical numpad
- Size
- 71.1 × 120.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 90
- Nets
- 107
- Pads
- 544
- Tracks, vias
- 1,190, 214
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 19 Jan 2020
- Updated
- 6 Nov 2020
Overview
Numpad is an open-source printed circuit board by inexcomp, from the inexcomp/NumpadA repository on GitHub. It is a 2-layer board of 71.1 × 120.9 mm with 90 parts on 107 nets, routed with 1,190 tracks and 214 vias.
It is built around the SRV05-4, BAT54C and WS2813C, with the AO3401A and SMD0805P050TF among its other parts. Its parts include 28 resistors, 17 diodes, 12 capacitors, 3 ICs and 1 transistor. It belongs with the STM32 boards of this library.
Main components
5
SRV05-4
SOT-23-6L-55℃~+150℃ 15V 1pF 4A 5V 5uA 6V 80W ESD Four channels IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOT-23-6L ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
BAT54C
SOT-231 Pair Common Cathode 200mA 2uA@25V 30V 600mA 800mV@100mA SOT-23 Schottky Diodes ROHSNexperiaSchottky Diodes
WS2813C
SMD5050-6P0.6mA 1.65mm 2kHz 5mm 800Kbit/s B:65mcd、R:280mcd、G:500mcd R:620nm~630nm、G:510nm~525nm、B:460nm~475nm 集成智能反向连接保护功能 SMD5050-6P RGB LEDs(Built-in IC) ROHSWorldsemiRGB LEDs(Built-In IC)AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
SMD0805P050TF
0805-40℃~+85℃ 1.5mm 100ms 100mΩ 1A 1mm 2.2mm 30A 500mA 500mW 6V 850mΩ 0805 Resettable Fuses ROHSRUILONResettable Fuses
README
README.mdNumpadA
A mechanical numpad.
Branches:
- master: Pro Micro version with MX support only
- standalone: STM32F103-based standalone board with MX/Alps/Choc support
This repository contains the hardware and documentation. The software used with the hardware is QMK.
Software License: GPL v2
Hardware License: TAPR 1.0
Documentation License: CC BY-SA 4.0 International
Parts
90| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | 470R | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R4, R10, R11, R12, R13, R14, R15, R17, R18, R19, R20, R21, R22 +5 |
| 18 | MX-LED | Keebio-Parts:MX-Alps-Choc-1U | SW_1, SW_2, SW_3, SW_4, SW_5, SW_6, SW_7, SW_8, SW_9, SW_BKSP1, SW_DOT1, SW_ESC1, SW_FN1, SW_MINUS1, SW_NUMLK1, SW_SLASH1 +2 |
| 11 | BAT54C | Package_TO_SOT_SMD:SOT-23 | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11 |
| 7 | 100nf | Capacitor_SMD:C_0402_1005Metric | C5, C6, C7, C8, C9, C11, C12 |
| 6 | WS2813 | LED_SMD:LED_WS2812_PLCC6_5.0x5.0mm_P1.6mm | D12, D13, D14, D15, D16, D17 |
| 3 | 1uf | Capacitor_SMD:C_0402_1005Metric | C1, C2, C10 |
| 3 | MX-LED | Keebio-Parts:MX-Alps-Choc-2U-StabFlip | SW_10, SW_ENTER1, SW_PLUS1 |
| 3 | TestPoint | TestPoint:TestPoint_Pad_D2.0mm | GND1, SCK1, SIO1 |
| 2 | 20pf | Capacitor_SMD:C_0402_1005Metric | C3, C4 |
| 2 | 5.1K | Resistor_SMD:R_0402_1005Metric | R27, R29 |
| 1 | 1.5K | Resistor_SMD:R_0402_1005Metric | R25 |
| 1 | 10K | Resistor_SMD:R_0402_1005Metric | R23 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R28 |
| 1 | 150R | Resistor_SMD:R_0402_1005Metric | R24 |
| 1 | 1M | Resistor_SMD:R_0402_1005Metric | R26 |
| 1 | 8MHz | Crystal:Crystal_SMD_5032-2Pin_5.0x3.2mm | Y1 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | LOGO | Logo:OSHWMark | G*** |
| 1 | LOGO | Logo:inexcomplogo1 | G*** |
| 1 | SMD0805P050TF | Fuse:Fuse_0805_2012Metric_Castellated | F1 |
| 1 | SRV05-4 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | STM32F103C8Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U3 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | XC6206PxxxMR | Package_TO_SOT_SMD:SOT-23 | U1 |
Questions
How big is the Numpad PCB?
It measures 71.1 × 120.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Numpad use?
90 parts, built around the SRV05-4, BAT54C, WS2813C and AO3401A. 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 Numpad KiCad files?
From the inexcomp/NumpadA repository on GitHub, at the commit this page was made from: the board is Numpad.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Numpad design in my own project?
Its repository states no licence, so its author keeps all rights: ask inexcomp before reusing the design.
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