2 layers32 × 24 mm
2 layers50 × 30 mm
Isolated Usb Serial
daumemo/USB-UART-with-galvanic-isolation2USB-UART self-made adapter with galvanic isolation
- Size
- 50 × 30 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 25
- Nets
- 35
- Pads
- 104
- Tracks, vias
- 204, 20
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 20 Jun 2019
- Updated
- 20 Jun 2019
Overview
Isolated Usb Serial is an open-source printed circuit board by daumemo, from the daumemo/USB-UART-with-galvanic-isolation repository on GitHub, published under the MIT licence. It is a 2-layer board of 50 × 30 mm with 25 parts on 35 nets, routed with 204 tracks and 20 vias.
It is built around the FT232RL and AP1117DG. Its parts include 7 capacitors, 5 resistors, 4 connectors, 3 ICs and 2 diodes. It belongs with the interfaces and adapters boards of this library.
Main components
2
FT232RL
SSOP-28-208mil-40℃~+85℃ 3.3V~5.25V、4V~5.25V USB 2.0 USB to UART SSOP-28-208mil USB Converters ROHSFTDIUSB Converters
AP1117DG
SOT-223-40℃~+125℃@(Tj) 1 1.4V@(1A) 18V 1A 70dB@(180Hz) Adjustable、Fixed Over Current Protection、Thermal shutdown Positive SOT-223-4 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdUSB-UART-with-galvanic-isolation
A DIY USB-UART adapter for working with devices which need such isolation. Great for programming for e.g. power meter which does not have any isolation from mains voltage. Mainly used for ESP8266 programming, but can be used for any device with UART interface.
You can read more about it: https://daumemo.com/diy-galvanically-isolated-usb-uart-adapter/
Parts
25| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 100n | Capacitors_SMD:C_0603 | C2, C3, C6, C7 |
| 3 | 390 | Resistors_SMD:R_0603 | R3, R4, R5 |
| 2 | 0603RGBLED | User2016:0603_rgb_led | D1, D2 |
| 2 | 270 | Resistors_SMD:R_0603 | R1, R2 |
| 1 | 1uF | Capacitors_SMD:C_0603 | C4 |
| 1 | 1uf | Capacitors_SMD:C_0603 | C1 |
| 1 | 220n | Capacitors_SMD:C_0603 | C5 |
| 1 | AP1117 | TO_SOT_Packages_SMD:SOT-223 | U1 |
| 1 | FT232RL | User2016:SSOP28 | U2 |
| 1 | OUT | Pin_Headers:Pin_Header_Angled_1x06 | P4 |
| 1 | Si8621 | SMD_Packages:SOIC-8-N | U3 |
| 1 | USB_OTG | Connect:USB_Mini-B | P1 |
| 1 | Vcc1 | Pin_Headers:Pin_Header_Straight_1x03 | P2 |
| 1 | Vcc2 | Pin_Headers:Pin_Header_Straight_1x02 | P3 |
| 1 | ~FLASH | Buttons_Switches_SMD:SW_SPST_EVQP0 | SW2 |
| 1 | ~RST | Buttons_Switches_SMD:SW_SPST_EVQP0 | SW1 |
The 23 most common of 25 parts.
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Questions
How big is the Isolated Usb Serial PCB?
It measures 50 × 30 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Isolated Usb Serial use?
25 parts, built around the FT232RL and AP1117DG. 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 Isolated Usb Serial KiCad files?
From the daumemo/USB-UART-with-galvanic-isolation repository on GitHub, at the commit this page was made from: the board is KiCad/Isolated Usb-Serial.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Isolated Usb Serial 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).