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 layers76.2 × 94.5 mm
numpad pcb design
- Size
- 76.2 × 94.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 53
- Nets
- 58
- Pads
- 220
- Tracks, vias
- 354, 26
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 7 Sep 2019
- Updated
- 8 Mar 2020
Overview
Bpad is an open-source printed circuit board by brcopping, from the brcopping/numpad repository on GitHub. It is a 2-layer board of 76.2 × 94.5 mm with 53 parts on 58 nets, routed with 354 tracks and 26 vias.
It is built around the ATMEGA32U4-AU and 1N4148W. Its parts include 18 diodes, 10 switches, 8 capacitors, 6 resistors and 1 IC. 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)
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
README
README.mdnumpad PCB
I am following MrKeeb's and Gondolindrin's video series PCB from Scratch with Gondo and ai03's guides to create my own numpad.
The layout is a standard numpad which can be seen here on keyboard layout editor
I created a rough case design (main body & high profile rim) for this PCB on tinkercad, it will take a lazercut metal plate for switch mounting.
To hold the case together I used M3 nuts and bolts, 35mm for the back and 25mm for the front (all 4 protrude too much, so probably 33mm and 22mm would be better if attainable. Will cut mine down when i get a chance)
Numpad firmware added to my QMK fork on git. To genreate the firmware file run:
make handwired/ben18:default
Parts
53| Qty | Value | Footprint | References |
|---|---|---|---|
| 17 | 1N4148W | Diode_SMD:D_SOD-323_HandSoldering | D0, D1, D2, D3, D4, D5, D6, D7, D8, D9, DAst1, DDel, DDiv1, DEnt, DMns1, DNum1 +1 |
| 4 | 0.1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C6, C7, C8, C9 |
| 2 | 10k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R4 |
| 2 | 22 | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R2, R3 |
| 2 | 22pF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C2, C3 |
| 1 | * | AcheronMX:MX100 | SWAst1 |
| 1 | + | AcheronMX:MX200 | SWPls1 |
| 1 | - | AcheronMX:MX100 | SWMns1 |
| 1 | / | AcheronMX:MX100 | SWDiv1 |
| 1 | 0 | AcheronMX:MX200R | SW0 |
| 1 | 1 | AcheronMX:MX100 | SW1 |
| 1 | 16MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R6 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C4 |
| 1 | 2 | AcheronMX:MX100 | SW2 |
| 1 | 3 | AcheronMX:MX100 | SW3 |
| 1 | 330 | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R5 |
| 1 | 4 | AcheronMX:MX100 | SW4 |
| 1 | 4.7uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C5 |
| 1 | 5 | AcheronMX:MX100 | SW5 |
| 1 | 6 | AcheronMX:MX100 | SW6 |
| 1 | 7 | AcheronMX:MX100 | SW7 |
| 1 | 8 | AcheronMX:MX100 | SW8 |
| 1 | 9 | AcheronMX:MX100 | SW9 |
| 1 | ATmega32U4-AU | Package_QFP:TQFP-44_10x10mm_P0.8mm | U1 |
| 1 | Del | AcheronMX:MX100 | SWDel1 |
| 1 | Ent | AcheronMX:MX200 | SWEnt1 |
| 1 | LED | AcheronComponents:LED_THT_2.54mm | D10 |
| 1 | Num | AcheronMX:MX100 | SWNum1 |
| 1 | SW_Push | AcheronHardware:smdPushBtn | SWRst1 |
| 1 | USB_B_Mini | LocalFootprints:USB_Mini_B_Female_548190519_top | J1 |
Questions
How big is the Bpad PCB?
It measures 76.2 × 94.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Bpad use?
53 parts, built around the ATMEGA32U4-AU and 1N4148W. 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 Bpad KiCad files?
From the brcopping/numpad repository on GitHub, at the commit this page was made from: the board is bpad.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bpad design in my own project?
Its repository states no licence, so its author keeps all rights: ask brcopping before reusing the design.
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