6 layers84 × 98 mm
FujiNet-5200-Rev0
FujiNetWIFI/fujinet-hardware
Schematics and design files for FujiNet hardware
145 parts142
2 layers26 × 38 mm
Bytebridge
nrwiersma/bytebridgeByteBridge a USB to UART breakout board with more power.
- Size
- 26 × 38 mm
- Copper layers
- 2
- Thickness
- 1.56 mm
- Parts
- 24
- Nets
- 39
- Pads
- 107
- Tracks, vias
- 111, 37
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 26 May 2025
- Updated
- 4 Jan 2026
Overview
Bytebridge is an open-source printed circuit board by nrwiersma, from the nrwiersma/bytebridge repository on GitHub, published under the MIT licence. It is a 2-layer board of 26 × 38 mm with 24 parts on 39 nets, routed with 111 tracks and 37 vias.
It is built around the CP2102N-A02-GQFN28R, AMS1117-3.3 and RK73H1ETTP1001F, with the LTST-C191GKT, RC0402JR-070RL and PZ254V-11-03P among its other parts. Its parts include 10 resistors, 4 capacitors, 4 diodes, 3 connectors and 2 ICs.
Main components
9
CP2102N-A02-GQFN28R
QFN-28-EP(5x5)-40℃~+85℃@(Ta) 1.3uA 3V~3.6V 9.5mA USB 2.0 USB to UART QFN-28-EP(5x5) USB Converters ROHSSilicon LabsUSB Converters
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
RK73H1ETTP1001F
0402-55℃~+155℃ 100mW 1kΩ 75V Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHSKOA Speer ElectronicsChip Resistor - Surface Mount
LTST-C191GKT
0603-55℃~+85℃ 100mW 12mcd 130° 2.1V 20mA 565nm 569nm Discrete Diode Green Water Clear 0603 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
RC0402JR-070RL
UncategorisedUnknown maker
PZ254V-11-03P
插件,P=2.54mm-40℃~+105℃ 1 1x3P 2.54mm 2.5mm 250V 3A 3P 3mm 6mm Black Brass Pin Header Through Hole 插件,P=2.54mm Pin Headers ROHSXFCNPin Headers
PZ254R-11-04P
弯插,P=2.54mm-40℃~+105℃ 1 1x4P 2.54mm 2.5mm 250V 3A 4P 6mm Black Brass Pin Header Right Angle 弯插,P=2.54mm Pin Headers ROHSXFCNPin Headers
BAT760-7
SOD-323Schottky DiodesDOWO
TYPE-C-31-M-12
SMD-30℃~+80℃ 1 10,000 cycles 16P 20V 5A 7.35mm Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSHRO ElectronicsUSB Connectors
README
README.md
ByteBridge a USB to UART breakout board with more power.
Features:
- CP2102 bridge
- AMS1117 capable of delivering 1A
Why
In 2025, dealing with Micro/Mini-USB is a pain. Additionally, most flash boards do not deliver enough current to power a stock ESP32, making to process more difficult than it needs to be.
Changelog
v0.1.0
- Initial schematic and board
Parts
24| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 1k | Resistor_SMD:R_0402_1005Metric | R3, R6, R7, R8 |
| 3 | 22u | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3 |
| 3 | LED | LED_SMD:LED_0603_1608Metric | D2, D3, D4 |
| 2 | 0 | Resistor_SMD:R_0402_1005Metric | R9, R10 |
| 2 | 5k1 | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 1 | 100n | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | 22.1k | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 47.5k | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | CP2102N-Axx-xQFN28 | Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U2 |
| 1 | Conn_01x03_Pin | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J5 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | D_Schottky_Small | Diode_SMD:D_SOD-323 | D1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
The 23 most common of 24 parts.
Questions
How big is the Bytebridge PCB?
It measures 26 × 38 mm and has 2 copper layers, 1.56 mm thick.
What parts does the Bytebridge use?
24 parts, built around the CP2102N-A02-GQFN28R, AMS1117-3.3, RK73H1ETTP1001F and LTST-C191GKT. 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 Bytebridge KiCad files?
From the nrwiersma/bytebridge repository on GitHub, at the commit this page was made from: the board is ByteBridge.kicad_pcb and its schematic ByteBridge.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bytebridge 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).
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