2 layers65 × 30 mm
Rgb to hdmi
hoglet67/RGBtoHDMI
Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
33 parts1kGPL-3.0
2 layers65 × 44 mm
Bloop box mainboard
bloop-box/bloop-box-mainboard4Bloop Box Mainboard PCB
- Size
- 65 × 44 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 33
- Nets
- 44
- Pads
- 165
- Tracks, vias
- 148, 13
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 3 Dec 2022
- Updated
- 29 Aug 2024
Overview
Bloop box mainboard is an open-source printed circuit board by bloop-box, from the bloop-box/bloop-box-mainboard repository on GitHub, published under the BSD-2-Clause licence. It is a 2-layer board of 65 × 44 mm with 33 parts on 44 nets, routed with 148 tracks and 13 vias.
Its parts include 8 resistors, 6 connectors, 4 capacitors and 1 IC. It belongs with the computers and single-board computers boards of this library.
README
README.mdBloop Box Mainboard
The board is designed using KiCAD 6 with production and assembly by JLCPCB in mind. All parts are selected to be available from JLCPCB at the time of writing and as many parts as possible are used from their basic library.
- uHAT format (fits on a Raspberry Pi Zero)
- Connectors for:
- Tailboard (Power supply, buttons, LEDs)
- SPI NFC-reader (Pinout fitting for RC522 Module)
- Speaker
- I2C connector for LED-Board
- Additional GPIO header with UART (optional)
- Speaker is driven by a MAX98357 3W amplifier
- amplifier gain can be set through jumper (9dB default setting)
- SD_MODE is set to stereo mix by default, solder jumper for setting left-only
Pinout of all connectors is printed on the bottom of the board
See schematics for detailed GPIO pinout
Parts
33| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | VAL** | Panelization:mouse-bite-2x5mm-slot-onesided | mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot, mouse-bite-2mm-slot |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric | R14, R15 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric | R20, R21 |
| 2 | 220p | Capacitor_SMD:C_0402_1005Metric | C3, C4 |
| 2 | 4k7 | Resistor_SMD:R_0402_1005Metric | R16, R18 |
| 2 | Ferrite | Inductor_SMD:L_0805_2012Metric | FB1, FB2 |
| 1 | 100k | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | 100nF | Capacitor_SMD:C_0402_1005Metric | C2 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 1M | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | GPIO | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Horizontal | J6 |
| 1 | Gain | Connector_PinHeader_2.00mm:PinHeader_2x03_P2.00mm_Vertical | JP2 |
| 1 | I2C | Connector_JST:JST_PH_S4B-PH-K_1x04_P2.00mm_Horizontal | J4 |
| 1 | LOGO | My_Footprints:CutieMark5mmInverted | G*** |
| 1 | LeftOnly | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | MAX98357 | Package_DFN_QFN:TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm_ThermalVias | U1 |
| 1 | NFC-Module | Connector_JST:JST_PH_S8B-PH-K_1x08_P2.00mm_Horizontal | J5 |
| 1 | Raspberry_Pi | Module:Raspberry_Pi_Zero_Socketed_THT_FaceDown_MountingHoles | J3 |
| 1 | SPKR | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J2 |
| 1 | TailBoard | Connector_JST:JST_PH_S8B-PH-K_1x08_P2.00mm_Horizontal | J7 |
The 28 most common of 33 parts.
Questions
How big is the Bloop box mainboard PCB?
It measures 65 × 44 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Bloop box mainboard use?
33 parts. 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 Bloop box mainboard KiCad files?
From the bloop-box/bloop-box-mainboard repository on GitHub, at the commit this page was made from: the board is pcb/BloopBox Mainboard.kicad_pcb and its schematic pcb/BloopBox Mainboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bloop box mainboard design in my own project?
Its repository publishes it under the BSD-2-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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