2 layers54.6 × 68.6 mm
Beaglebone rs232
bulbtack/beaglebone-rs232-cape
A cape for the BeagleBone Black (and compatible derivatives) that adapts four of the onboard UARTs (UART1, UART2, UART4, and UART5) for use with RS-232 usage.
21 parts
2 layers65 × 30 mm
USB RS232
llegoff/USB_RS232ch340 usb to rs232 PiZero format
- Size
- 65 × 30 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 32
- Nets
- 41
- Pads
- 127
- Tracks, vias
- 458, 53
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 8 Sep 2017
- Updated
- 25 Oct 2017
Overview
USB RS232 is an open-source printed circuit board by llegoff, from the llegoff/USB_RS232 repository on GitHub. It is a 2-layer board of 65 × 30 mm with 32 parts on 41 nets, routed with 458 tracks and 53 vias.
It is built around the ST232C, CH340G and BSS138. Its parts include 15 capacitors, 4 resistors, 4 connectors, 3 ICs and 2 diodes. It belongs with the interfaces and adapters boards and the Raspberry Pi (Linux) boards of this library.
Main components
3
ST232C
TSSOP-160℃~+70℃ 10mA 2 2 220Kbps 4.5V~5.5V Transceiver Yes TSSOP-16 RS232 ICs ROHSSTMicroelectronicsRS232 ICs
CH340G
SOP-16-40℃~+85℃ 2Mbps 3.3V、5V USB 2.0 USB to UART SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
README
README.mdParts
32| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 100n | Capacitors_SMD:C_0805 | C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15 |
| 2 | 10k | Resistors_SMD:R_0805 | R1, R2 |
| 2 | 1k | Resistors_SMD:R_0805 | R3, R4 |
| 2 | 22p | Capacitors_SMD:C_0805 | C1, C3 |
| 2 | ST232C | Housings_SOIC:SOIC-16_3.9x9.9mm_Pitch1.27mm | U2, U3 |
| 1 | 10n | Capacitors_SMD:C_0805 | C2 |
| 1 | 10u | Capacitors_SMD:CP_Elec_4x5.7 | C4 |
| 1 | 12Mhz | Crystals:Crystal_HC49-U_Vertical | Y1 |
| 1 | BSS138 | TO_SOT_Packages_SMD:SOT-23 | Q1 |
| 1 | CH340G | SMD_Packages:SO-16-N | U1 |
| 1 | COM | _LaurentPerso:DB9MC | J3 |
| 1 | RX | LEDs:LED_0805 | D1 |
| 1 | TTL | Pin_Headers:Pin_Header_Straight_1x06_Pitch2.54mm | J4 |
| 1 | TX | LEDs:LED_0805 | D2 |
| 1 | USB | Pin_Headers:Pin_Header_Straight_1x04_Pitch2.54mm | J1 |
| 1 | USB_OTG | Connectors:USB_Mini-B | J2 |
The 30 most common of 32 parts.
Questions
How big is the USB RS232 PCB?
It measures 65 × 30 mm and has 2 copper layers, 1.6 mm thick.
What parts does the USB RS232 use?
32 parts, built around the ST232C, CH340G and BSS138. 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 USB RS232 KiCad files?
From the llegoff/USB_RS232 repository on GitHub, at the commit this page was made from: the board is USB_RS232.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the USB RS232 design in my own project?
Its repository states no licence, so its author keeps all rights: ask llegoff before reusing the design.
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