

Main Tree
A soldering kit of a "3D" Christmas Tree
- Size
- 100 × 99.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 44
- Nets
- 36
- Pads
- 135
- Tracks, vias
- 348, 41
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20190905)
- Created
- 19 Dec 2019
- Updated
- 16 Apr 2020
Overview
Main Tree is an open-source printed circuit board by Electro707, from the Electro707/2019_3D_Tree_PCB_Kit repository on GitHub, published under the MIT licence. It is a 2-layer board of 100 × 99.8 mm with 44 parts on 36 nets, routed with 348 tracks and 41 vias.
It is built around the ULN2003. Its parts include 16 resistors, 15 diodes, 4 connectors, 3 ICs and 2 capacitors.
Main components
1README
README.md2019_3D_Tree_PCB_Kit
A soldering kit of a "3D" Christmas Tree
This repository is archived, as it's a one-time design. Now files are hosted on Google Drive.
Link to website, in which the Google Drive link can be found: Link
I may create a new general reposity for the kit that will be updated as time goes on (there also won't be any of the University of New Haven logos on that one).
Parts
44| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 330 | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16 |
| 15 | LED_ALT | LED_THT:LED_D5.0mm_Horizontal_O1.27mm_Z3.0mm | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15 |
| 2 | M3 hole | MountingHole:MountingHole_3.2mm_M3_DIN965 | H1, H2 |
| 1 | 4017 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U3 |
| 1 | BATT | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J4 |
| 1 | C | Capacitor_SMD:C_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C2 |
| 1 | C | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C1 |
| 1 | LM555 | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | U1 |
| 1 | LOGO | MyLogo:UNH 13.4x13.4 | G*** |
| 1 | Polyfuse | Fuse:Fuse_BelFuse_0ZRE0005FF_L8.3mm_W3.8mm | F1 |
| 1 | R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | Secondary Tree 1 | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J1 |
| 1 | Secondary Tree 2 | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J2 |
| 1 | ULN2003 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Wuerth_614105150721_Vertical | J3 |
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Questions
How big is the Main Tree PCB?
It measures 100 × 99.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Main Tree use?
44 parts, built around the ULN2003. 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 Main Tree KiCad files?
From the Electro707/2019_3D_Tree_PCB_Kit repository on GitHub, at the commit this page was made from: the board is PCB - KiCad/Main Tree/PCB.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Main Tree 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).