2 layers104.9 × 75.2 mm
2 layers99.3 × 115.8 mm
Numpad
str-dst/numpad14simple numpad
- Size
- 99.3 × 115.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 70
- Nets
- 54
- Pads
- 257
- Tracks, vias
- 375, 4
- Pours
- 200
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 15 Jun 2020
- Updated
- 5 Aug 2020
Overview
Numpad is an open-source printed circuit board by str-dst, from the str-dst/numpad repository on GitHub. It is a 2-layer board of 99.3 × 115.8 mm with 70 parts on 54 nets, routed with 375 tracks and 4 vias.
It is built around the ATMEGA328-PU. Its parts include 23 diodes, 6 resistors, 5 capacitors and 1 fuse. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
extras/README.mdExtras for the Sesame
Parts
70| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | D_Small | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D3, D4, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +5 |
| 18 | MX-NoLED | MX_Only:MXOnly-1U-NoLED | MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX10, MX11, MX12, MX13, MX14, MX16, MX17, MX18, MX20 +2 |
| 3 | MX-NoLED | MX_Only:MXOnly-2U-NoLED | MX15, MX19, MX21 |
| 2 | 1.5K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3, R6 |
| 2 | 100n | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P2.50mm | C2, C3 |
| 2 | 22p | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | C4, C5 |
| 2 | 3.6V | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2 |
| 2 | 5.1K | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R4, R5 |
| 2 | 68R | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2 |
| 1 | 4.7u | Capacitor_THT:CP_Radial_D4.0mm_P2.00mm | C1 |
| 1 | ATmega328-PU | Package_DIP:DIP-28_W7.62mm | MCU1 |
| 1 | AVR-ISP-6 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Horizontal | ISP1 |
| 1 | BOOT | Button_Switch_THT:SW_PUSH_6mm | BOOT |
| 1 | Crystal | Crystal:Crystal_HC49-4H_Vertical | XTAL1 |
| 1 | LOGO | custom_parts:oshw | G*** |
| 1 | LOGO | custom_parts:elmo | G*** |
| 1 | Polyfuse | Fuse:Fuse_Littelfuse_395Series | F1 |
| 1 | RESET | Button_Switch_THT:SW_PUSH_6mm | RESET |
| 1 | USB_C_Receptacle_USB2.0 | custom_parts:USB_C_GCT_USB4085 | USB1 |
The 64 most common of 70 parts.
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Questions
How big is the Numpad PCB?
It measures 99.3 × 115.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Numpad use?
70 parts, built around the ATMEGA328-PU. 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 str-dst/numpad 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 str-dst before reusing the design.