2 layers132.1 × 45.7 mm
IPoS
peterheinrich/InternetOverSpaghetti
Transmitting IP packages over a pair of spaghetti thus demonstrating how media independent IP really is.
42 parts342
2 layers35 × 75 mm
Unicorn
sgiraz/electronics-boardsRepository containing custom electronics boards
- Size
- 35 × 75 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 26
- Nets
- 31
- Pads
- 109
- Tracks, vias
- 278, 5
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 2 Aug 2023
- Updated
- 27 Mar 2024
Overview
Unicorn is an open-source printed circuit board by sgiraz, from the sgiraz/electronics-boards repository on GitHub, published under the BSD-3-Clause licence. It is a 2-layer board of 35 × 75 mm with 26 parts on 31 nets, routed with 278 tracks and 5 vias.
It is built around the ATMEGA328-PU and L7805. Its parts include 6 capacitors, 5 resistors, 5 diodes, 4 connectors and 2 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA328-PU
PDIP-28-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH PDIP-28 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdElectronics Boards
This is the electronics-boards repository, containing all the electronic boards developed for study and DIY purposes.
Each board has an own folder where there are schematic, layout, firmware, simulations, documents, photos, configuration files, etc.
The board folders follow these rules:
- foldername name of the board
- admitted subfolders:
- docs folder contains documents
- datasheet folder contains useful datasheet
- manuals folder contains reference manual
- output folder contains files for the production of the PCB and board (Gerber files, BOM, PCB Notes, etc.)
- kicad folder contains the KiCad project
- pics folder contains useful photos and videos of pcb, board, setup
- sw folder contains the firmware useful for the board (test, normal operation, etc)
- docs folder contains documents
Note: folders and files must be named in lowercase
Git LFS remark
This repository exploits the Git Large File Support (LFS) to handle the binary files. To download the binary files, follow the GitHub instructions. To configure Git LFS, follow these instructions.
Parts
26| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100nF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C3, C6 |
| 2 | 22pF | Capacitor_THT:C_Disc_D3.8mm_W2.6mm_P2.50mm | C4, C5 |
| 2 | 330 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R3 |
| 2 | Conn_01x14_Female | Connector_PinSocket_2.54mm:PinSocket_1x14_P2.54mm_Vertical | J3, J4 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C1 |
| 1 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C2 |
| 1 | 10uH | Inductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolder | L1 |
| 1 | 16MHz | Crystal:Crystal_HC49-4H_Vertical | Crystal1 |
| 1 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | ATmega328-P | Package_DIP:DIP-28_W7.62mm | U2 |
| 1 | Conn_01x02 | JST_S2B-PH-SM4-TB:JST_S2B-PH-SM4-TB | J1 |
| 1 | L7805 | L7805:TO255P1020X450X2000-3 | U1 |
| 1 | LOGO | logos:silk_logo | G*** |
| 1 | PWR | LED_THT:LED_D3.0mm | LED1 |
| 1 | RB | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | RG | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | RST | LED_THT:LED_D3.0mm | LED2 |
| 1 | RX | LED_SMD:LED_0402_1005Metric | LED4 |
| 1 | Reset | Button_Switch_THT:SW_PUSH_6mm | RST1 |
| 1 | SPI | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | TX | LED_SMD:LED_0402_1005Metric | LED3 |
Questions
How big is the Unicorn PCB?
It measures 35 × 75 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Unicorn use?
26 parts, built around the ATMEGA328-PU and L7805. 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 Unicorn KiCad files?
From the sgiraz/electronics-boards repository on GitHub, at the commit this page was made from: the board is unicorn/kicad/unicorn.kicad_pcb and its schematic unicorn/kicad/unicorn.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Unicorn design in my own project?
Its repository publishes it under the BSD-3-Clause 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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