4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
2 layers200.3 × 87.1 mm
Christmass tree v1.0
MaestroEngineering/christmass-treeA christmass tree gift for family
- Size
- 200.3 × 87.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 150
- Nets
- 87
- Pads
- 349
- Tracks, vias
- 873, 200
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 4 Apr 2026
- Updated
- 4 Apr 2026
Overview
Christmass tree v1.0 is an open-source printed circuit board by MaestroEngineering, from the MaestroEngineering/christmass-tree repository on GitHub. It is a 2-layer board of 200.3 × 87.1 mm with 150 parts on 87 nets, routed with 873 tracks and 200 vias.
It is built around the AVR128DA32-I/PT and 1N4148W. Its parts include 61 diodes, 44 resistors, 11 transistors, 4 capacitors and 2 connectors.
Main components
2
AVR128DA32-I/PT
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 128KB 12bit 16KB 24MHz 27 512Byte 8 Bit AVR Built-in FLASH TQFP-32(7x7) 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
Parts
150| Qty | Value | Footprint | References |
|---|---|---|---|
| 30 | RES-4K7-0603-1P | Resistor_SMD:R_0603_1608Metric | R1, R2, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23 +14 |
| 25 | TestPoint | TestPoint:TestPoint_Pad_4.0x4.0mm | TP1, TP1, TP2, TP2, TP3, TP3, TP4, TP4, TP5, TP10, TP10, TP11, TP11, TP12, TP13, TP13 +9 |
| 21 | LED_0603_RED | LED_SMD:LED_0603_1608Metric | D1, D3, D4, D5, D10, D11, D12, D21, D28, D29, D30, D31, D32, D52, D53, D54 +5 |
| 20 | LED_0603_BLUE | LED_SMD:LED_0603_1608Metric | D18, D19, D20, D26, D27, D37, D38, D39, D40, D41, D43, D44, D45, D46, D47, D83 +4 |
| 19 | LED_0603_GREEN | LED_SMD:LED_0603_1608Metric | D13, D14, D15, D16, D17, D22, D23, D24, D25, D33, D34, D35, D36, D42, D67, D68 +3 |
| 12 | RES-1K-0603-1P | Resistor_SMD:R_0603_1608Metric | R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R44 |
| 6 | FET-N-50V-200MA-BSS138-SOT23 | Package_TO_SOT_SMD:SOT-23 | Q6, Q7, Q8, Q9, Q10, Q11 |
| 5 | FET-P-30V-4A-SOT23-AO3401 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4, Q5 |
| 3 | CC-100NF-50V-NP0 | Capacitor_SMD:C_0603_1608Metric | C1, C3, C4 |
| 2 | RES-10K-0603-1P | Resistor_SMD:R_0603_1608Metric | R31, R32 |
| 1 | |||
| 1 | 1N4148W | Diode_SMD:D_SOD-123 | D2 |
| 1 | AVR128DA32 | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.1x3.1mm_ThermalVias | U1 |
| 1 | CC-10UF-25V-X5R | Capacitor_SMD:C_1206_3216Metric | C2 |
| 1 | Conn_02x03_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | Signature | IG - Mech:Signature | *1 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Wuerth_614105150721_Vertical | J1 |
Questions
How big is the Christmass tree v1.0 PCB?
It measures 200.3 × 87.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Christmass tree v1.0 use?
150 parts, built around the AVR128DA32-I/PT 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 Christmass tree v1.0 KiCad files?
From the MaestroEngineering/christmass-tree repository on GitHub, at the commit this page was made from: the board is christmass-tree-v1.0.kicad_pcb and its schematic christmass-tree-v1.0.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Christmass tree v1.0 design in my own project?
Its repository states no licence, so its author keeps all rights: ask MaestroEngineering before reusing the design.
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