USB Breakout Board
Posted: Sun Apr 19, 2020 4:20 pm
Been having a few USB issues with a project and thought it would be handy to have a USB breakout board. One of my PCB's uses a CP2102 USB-UART IC. When I plug it into my laptop it causes the laptop to turn off the USB port! I need to restart the laptop to get it back online. With the number of things I have running all the time, this is a pain. It didn't take long to whip up a simple PCB for my needs:
This will allow me quickly to isolate and measure the various USB lines. Yes, I did have a stripped out cable, but it's a pain to use. This PCB will have a loop test pin (top) for each USB wire. The central jumpers will allow me to isolate each wire as needed. The two power LEDs connect to either side of the USB VBUS lines and are jumpered so they can be off or on as needed. All the jumpers are 2.54mm (0.1"), but maybe I should have used the smaller 1.27mm jumpers.
As a backup, I also purchased an assembled USB isolation board for a bit more protection as well. This unit is only USB 1.0, but it totally isolates one side from the other via a small transformer and power supplies for each line.
This will allow me quickly to isolate and measure the various USB lines. Yes, I did have a stripped out cable, but it's a pain to use. This PCB will have a loop test pin (top) for each USB wire. The central jumpers will allow me to isolate each wire as needed. The two power LEDs connect to either side of the USB VBUS lines and are jumpered so they can be off or on as needed. All the jumpers are 2.54mm (0.1"), but maybe I should have used the smaller 1.27mm jumpers.
As a backup, I also purchased an assembled USB isolation board for a bit more protection as well. This unit is only USB 1.0, but it totally isolates one side from the other via a small transformer and power supplies for each line.