4 layers86 × 90 mm
Sc02 drive
KVR-CIBER/sc02-solar-hypercar
SC-02 Solar Hypercar: 3D-printbare Le-Mans-racer op zonne-energie met Pi 4 + ESP32-S3, CadQuery-CAD en three.js-simulatie
94 parts
2 layers92.2 × 85.4 mm
Macropad or sum
saumilthecode/macropad-or-sumwergfbowbe
- Size
- 92.2 × 85.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 14
- Nets
- 21
- Pads
- 77
- Tracks, vias
- 80, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 11 Nov 2025
- Updated
- 4 Dec 2025
Overview
Macropad or sum is an open-source printed circuit board by saumilthecode, from the saumilthecode/macropad-or-sum repository on GitHub. It is a 2-layer board of 92.2 × 85.4 mm with 14 parts on 21 nets, routed with 80 tracks and 0 vias.
It is built around the SK6812MINI-E, AO3400A and SS14. Its parts include 6 switches, 3 diodes, 1 capacitor, 1 resistor and 1 IC. It belongs with the keyboards and input boards and the RP2040 boards of this library.
Main components
3
SK6812MINI-E
SMD-40℃~+85℃ 0.6mA 1.78mm 120mcd~240mcd 120° 160mcd~320mcd 1kHz 2.8mm 2000V 3.2mm 3.7V~5.5V 460nm~470nm 515nm~525nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Semi-transparent lens SMD RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
SS14
SMA(DO-214AC)-55℃~+150℃ 1A 25A 300uA@40V 40V 550mV@1A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
README
README.mdsharkpad
Board outline graciously yoinked from blahaj.sg
Essentially 6 keys & a vibration motor(imagine everytime it sensed a error it would start schizoing out)
The PCB looksl like this
the schematic is this
overall sharkpad should look like this
PCB sits on top of the bottom case with everything rounded off for comfort. the yellow is to be printed seperately and slotted in on top (it is cut off on the tail & xiao end so that there's no clearance issues + easy access + so the vibration motor can free itself when the time comes
document with all sides of the finished pad!
Bom
6x Cherry MX Switches
6x Keycaps (self owned)
1x XIAO RP2040
1x Case (1 printed part)
2x SK6812MINI (LED's)
Parts
14| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6 |
| 2 | SK6812MINI | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D2, D3 |
| 1 | 100 nF | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 100 ohm | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | Motor_DC | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | M1 |
| 1 | SS14 | Diode_SMD:D_SMA | D1 |
| 1 | XIAO-RP2040-DIP | Seeed Studio XIAO Series Library:XIAO-RP2040-DIP | U1 |
Questions
How big is the Macropad or sum PCB?
It measures 92.2 × 85.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Macropad or sum use?
14 parts, built around the SK6812MINI-E, AO3400A and SS14. 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 Macropad or sum KiCad files?
From the saumilthecode/macropad-or-sum repository on GitHub, at the commit this page was made from: the board is PCB/me.kicad_pcb and its schematic PCB/OPL_Kicad_Library-master/Grove Vision AI V2 Library/Grove - Vision AI Module V2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Macropad or sum design in my own project?
Its repository states no licence, so its author keeps all rights: ask saumilthecode before reusing the design.
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