4 layers81.2 × 96.6 mm
2 layers108.5 × 65.9 mm
3rd testing
AyamBercakap/AyamBercakap.github.io- Size
- 108.5 × 65.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 52
- Pads
- 184
- Tracks, vias
- 375, 38
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 24 Mar 2025
- Updated
- 4 Oct 2026
Overview
3rd testing is an open-source printed circuit board by AyamBercakap, from the AyamBercakap/AyamBercakap.github.io repository on GitHub. It is a 2-layer board of 108.5 × 65.9 mm with 36 parts on 52 nets, routed with 375 tracks and 38 vias.
It is built around the ATMEGA32U4 and SK6812-EC20. Its parts include 8 capacitors, 8 diodes, 6 switches, 4 resistors and 1 IC. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA32U4
UncategorisedUnknown maker
SK6812-EC20
SMD,2x2mm-40℃~+80℃ 0.65mA 0.65mm 100mcd~200mcd 160mcd~320mcd 160° 1kHz 2000V 2mm 2mm 3.7V~5.5V 460nm~475nm 50mcd~100mcd 520nm~535nm 620nm~630nm 800Kbit/s Built-in power-on reset circuit、Built-in one-way transmission function Semi-transparent lens SMD,2x2mm RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4, C5, C6, C7 |
| 4 | D | keyboard_parts:D_SOD123_axial | D1, D2, D3, D4 |
| 4 | SK6812-E | LED_SK6812-E:LED_SK6812-E | D5, D6, D7, D8 |
| 4 | Switch | ScottoKeebs_MX:MX_PCB_1.00u | SW1, SW2, SW3, SW4 |
| 2 | 22 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R4 |
| 2 | 22p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 1 | |||
| 1 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8 |
| 1 | 5.1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | ATMEGA32U4 | Package_DFN_QFN:TQFN-44-1EP_7x7mm_P0.5mm_EP4.7x4.7mm | U1 |
| 1 | Conn_02x03_Odd_Even | pads:pads | PROG1 |
| 1 | Crystal_GND24 | Crystal:Crystal_SMD_SeikoEpson_FA238-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | LOGO | AyamLogo:MacroDXLogo | G*** |
| 1 | RotaryEncoder_Switch | RotaryEncoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW6 |
| 1 | SW_PUSH | Button_Switch_SMD:SW_SPST_TL3342 | SW5 |
| 1 | USB_C_Plug_USB2.0 | Connector_USB:USB_C_Receptacle_GCT_USB4085 | P1 |
The 32 most common of 36 parts.
Questions
How big is the 3rd testing PCB?
It measures 108.5 × 65.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 3rd testing use?
36 parts, built around the ATMEGA32U4 and SK6812-EC20. 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 3rd testing KiCad files?
From the AyamBercakap/AyamBercakap.github.io repository on GitHub, at the commit this page was made from: the board is Kicad/CustomMacroBoard/3rd testing.kicad_pcb and its schematic Kicad/CustomMacroBoard/3rd testing.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 3rd testing design in my own project?
Its repository states no licence, so its author keeps all rights: ask AyamBercakap before reusing the design.
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