2 layers80 × 70 mm
USB TO 8 UART
LuizFernandoOliveira/Conversor-USB-para-8-UARTs
This work is licensed under a [Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License][cc-by-nc-nd].
93 parts
2 layers110 × 82.5 mm
Octoserial
superna9999/octoserial5USB High-Speed to 8x RS-232 TTL level with the CH348Q IC.
- Size
- 110 × 82.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 39
- Nets
- 45
- Pads
- 163
- Tracks, vias
- 306, 92
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 31 Aug 2022
- Updated
- 17 Jan 2023
Overview
Octoserial is an open-source printed circuit board by superna9999, from the superna9999/octoserial repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 110 × 82.5 mm with 39 parts on 45 nets, routed with 306 tracks and 92 vias.
It is built around the CH348Q and AMS1117-3.3. Its parts include 10 connectors, 9 capacitors, 4 resistors, 2 ICs and 2 diodes.
Main components
2
CH348Q
LQFP-48(7x7)3.3V 360uA 55mA 6Mbps 8 USB 2.0 USB to UART LQFP-48(7x7) USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB 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
README
README.mdOctoSerial
USB High-Speed to 8x RS-232 TTL level with the CH348Q IC.
Schematics: octoserial.pdf
Changelog
Version 1.1:
- Production version with 40pins headers with GPIOs + 3v3 + VBUS & GND
Version 0.1:
- Initial prototype with CH348Q samples
LICENCE
Apache License Version 2.0Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | Conn_01x03_Male | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Horizontal | J3, J4, J5, J6, J7, J8, J9, J10 |
| 4 | 100nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C14, C15, C16, C17 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 2 | 10uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C3 |
| 2 | 22pF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C5, C9 |
| 2 | 2K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3, R4 |
| 2 | 4.7K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2 |
| 2 | LED | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D3, D4 |
| 1 | 0.1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2 |
| 1 | 8MHz | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | CH348Q | Package_QFP:LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | Conn_02x20_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J2 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | USB_OTG | Connector_USB:USB_B_Lumberg_2411_02_Horizontal | J1 |
The 33 most common of 39 parts.
Questions
How big is the Octoserial PCB?
It measures 110 × 82.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Octoserial use?
39 parts, built around the CH348Q and AMS1117-3.3. 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 Octoserial KiCad files?
From the superna9999/octoserial repository on GitHub, at the commit this page was made from: the board is octoserial.kicad_pcb and its schematic octoserial.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Octoserial design in my own project?
Its repository publishes it under the Apache-2.0 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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