2 layers100 × 90 mm
2 layers100 × 75 mm
- Size
- 100 × 75 mm
- Copper layers
- 2
- Thickness
- 1 mm
- Parts
- 52
- Nets
- 31
- Pads
- 144
- Tracks, vias
- 570, 109
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 5 Jul 2023
- Updated
- 27 Oct 2026
Overview
30led is an open-source printed circuit board by McbeEringi, from the McbeEringi/pcb-stuff repository on GitHub, published under the MIT licence. It is a 2-layer board of 100 × 75 mm with 52 parts on 31 nets, routed with 570 tracks and 109 vias.
It is built around the ATTINY404-SSN, CH340K and CR2032. Its parts include 30 diodes, 8 resistors, 3 capacitors, 2 ICs and 2 switches. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATTINY404-SSN
SOIC-14-40℃~+105℃ 1.8V~5.5V 10bit 12 128Byte 20MHz 256Byte 4KB 8 Bit AVR Built-in FLASH SOIC-14 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
CH340K
ESSOP-10-150mil-1mm-20℃~+70℃ 2Mbps 3.3V、5V USB 2.0 USB to serial ESSOP-10-150mil-1mm USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
CR2032
-- Unclassified goods ROHSMaxellUncategorised
Parts
52| Qty | Value | Footprint | References |
|---|---|---|---|
| 30 | LED | LED_SMD:LED_0603_1608Metric | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +14 |
| 6 | Rled | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5, R6 |
| 2 | 0u1 | Capacitor_SMD:C_0603_1608Metric | C2, C3 |
| 2 | 4k7 | Resistor_SMD:R_0603_1608Metric | R7, R8 |
| 2 | CR2032 | Battery:BatteryHolder_Multicomp_BC-2001_1x2032 | BT1, BT2 |
| 2 | SW_Push | Library:alps-skrp | SW1, SW2 |
| 1 | Library:PCB.MCBEERINGI.DEV | ||
| 1 | 10u | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | ATtiny404-SS | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1 |
| 1 | CH340K | Package_SO:SSOP-10-1EP_3.9x4.9mm_P1mm_EP2.1x3.3mm | U2 |
| 1 | LOGO | Library:mcbeeringi_icon_20mm | |
| 1 | PRG_GND | TestPoint:TestPoint_Pad_1.5x1.5mm | TP1 |
| 1 | PRG_UPDI | TestPoint:TestPoint_Pad_D1.5mm | TP2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4110 | J1 |
Questions
How big is the 30led PCB?
It measures 100 × 75 mm and has 2 copper layers, 1 mm thick.
What parts does the 30led use?
52 parts, built around the ATTINY404-SSN, CH340K and CR2032. 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 30led KiCad files?
From the McbeEringi/pcb-stuff repository on GitHub, at the commit this page was made from: the board is proj/card/30led/30led.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the 30led design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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