4 layers215 × 150 mm
Mackerel-30-proto
crmaykish/mackerel-68k
A series of single-board Motorola 68k computers with support for modern Linux
133 parts96MIT
2 layers166 × 39 mm
Protoboard
meh2481/protoboard- Size
- 166 × 39 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 52
- Nets
- 46
- Pads
- 174
- Tracks, vias
- 209, 20
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 14 May 2022
- Updated
- 15 May 2022
Overview
Protoboard is an open-source printed circuit board by meh2481, from the meh2481/protoboard repository on GitHub, published under the Unlicense licence. It is a 2-layer board of 166 × 39 mm with 52 parts on 46 nets, routed with 209 tracks and 20 vias.
It is built around the LM2576T-5.0. Its parts include 13 resistors, 11 connectors, 7 diodes, 5 capacitors and 5 switches.
Main components
1README
README.mdProtoboard
Prototyping board for pi pico development, with some useful features:
- SD card reader
- Test LEDs
- DAC/Speaker
- Pushbuttons
- OLED Display
- 12V->5V buck converter
- USB-C/MicroUSB power in
- Pico pinout protoboard
Materials
Parts used:
- 1x I2C OLED Display
- 1x Pi Pico Breadboard
- 1x 3A Fuse
- 2x Fuse Holder
- 1x 12V Power Supply, optional
- 3x 400-Pin Protoboard
- 1x USB-C Connector
- 1x MicroUSB Connector
- 1x 5V Voltage Regulator
- 2x Shottky Diode
- 1x 100uH Inductor
- 1x DC Power Jack
- 1x MicroSD connector
- 1x Speaker
- 5x 2x2 2.54mm Female Pin Header
- 8x M2x8 screws
- 4x M2.5x4-ish screws
- 1x 1x4 2.54mm Female Pin Header
- 1x 1x8 2.54mm Female Pin Header
- 4x 6mm Push Buttons
- Various resistors/capacitors/LEDs/switches
Improvements
This project is complete, but if you make it you'll probably want to make some changes.
- Power LED resistor should go to GND, not GND_SWITCHED. That way LED is off when switch is off.
- Protoboards seem off-center? Probably not measured correctly.
- Smaller inductor; current one is probably overkill.
- Buck converter on right side of board, not left (or pico protoboard on right side) for easier wiring when prototyping.
- Amp like this one for speaker works really well if you can fit it on the board.
- 5V->3V3 stepdown might be a good idea if you don't want to be tied to the pico's power supply.
- Better PCB labels/warnings against using 3V3 on SD card/etc.
Parts
52| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 47K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P2.54mm_Vertical | R1, R2, R3, R4, R5, R6, R7 |
| 5 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8, R9, R10, R11, R13 |
| 5 | LED | LED_THT:LED_D5.0mm | LED1, LED2, LED3, LED4, LED5 |
| 4 | SW_DIP_x01 | Button_Switch_THT:SW_PUSH_6mm_H7.3mm | SW1, SW2, SW3, SW4 |
| 2 | 0.1uF | Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm | C2, C3 |
| 2 | 1N5822 | Diode_THT:D_DO-201AD_P12.70mm_Horizontal | D1, D2 |
| 2 | Conn_01x04 | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J2, J6 |
| 2 | Conn_02x02_Counter_Clockwise | Connector_PinSocket_2.54mm:PinSocket_2x02_P2.54mm_Vertical | J3, J4 |
| 1 | 1000uF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C5 |
| 1 | 100uF | Capacitor_THT:CP_Radial_D8.0mm_P3.50mm | C4 |
| 1 | 100uH | Inductor_THT:L_Toroid_Vertical_L28.6mm_W14.3mm_P11.43mm_Bourns_5700 | L1 |
| 1 | 10K | Resistor_THT:R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R12 |
| 1 | 10uF | Capacitor_THT:C_Disc_D5.1mm_W3.2mm_P5.00mm | C1 |
| 1 | 12V | Connector_PinSocket_2.54mm:PinSocket_2x02_P2.54mm_Vertical | J9 |
| 1 | 3A | Library:FuseHolder_3.5x9.75mm | F1 |
| 1 | 5V | Connector_PinSocket_2.54mm:PinSocket_2x02_P2.54mm_Vertical | J10 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_CUI_PJ-102AH_Horizontal | JCK1 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | GND | Connector_PinSocket_2.54mm:PinSocket_2x02_P2.54mm_Vertical | J11 |
| 1 | LM2576T-5 | Package_TO_SOT_THT:TO-220-5_P3.4x3.7mm_StaggerOdd_Lead3.8mm_Vertical | U1 |
| 1 | LOGO | LOGO | G*** |
| 1 | Micro_SD_Card | Connector_Card:microSD_HC_Molex_104031-0811 | SD1 |
| 1 | SD_PINS | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J1 |
| 1 | SW_SPDT | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | SW5 |
| 1 | Speaker | Buzzer_Beeper:Buzzer_D14mm_H7mm_P10mm | LS1 |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_GCT_USB3076-30-A | J8 |
| 1 | USB_C_Receptacle | Connector_USB:USB_C_Receptacle_GCT_USB4085 | J7 |
The 48 most common of 52 parts.
Questions
How big is the Protoboard PCB?
It measures 166 × 39 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Protoboard use?
52 parts, built around the LM2576T-5.0. 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 Protoboard KiCad files?
From the meh2481/protoboard repository on GitHub, at the commit this page was made from: the board is kicad/Protoboard.kicad_pcb and its schematic kicad/Protoboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Protoboard design in my own project?
Its repository publishes it under the Unlicense licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
Similar boards
- 2 layers65 × 56 mm
- 2 layers150 × 100 mm
FuenteRegulable
EmanuelDecima/Fuente-Variable-con-Microcontrolador
Este proyecto consiste en el desarrollo de una fuente de alimentación variable controlada digitalmente mediante un microcontrolador, permitiendo ajustar el voltaje de salida de forma precisa y programable.
56 parts1 - 2 layers
- 2 layers190 × 110 mm
- 2 layers100 × 100 mm
- 2 layers150.5 × 110.5 mm
Caravel breakout QFN
nic0villegasc/LushayLabs-TangNano20K
In this repository I will save all the code that I used to run the LushayLabs examples.
76 parts - 2 layers208.3 × 119.4 mm
RaffstoreController
Rhynaz/RaffstoreControlSystem
Web enabled relay board with hardware button support for easy smart home integration
180 partsGPL-3.0