OMGUSB is the USB-C extension board for the OMGS3, designed with matching 1.27mm pitch pads (top and bottom) that can be used in various ways to connect it to an OMGS3 board.
You can solder the OMGS3 directly to this board (stacked, as pictured below) or with 1.27mm male headers between them, soldered on the bottom.
OMGUSB also has small pin holes in the pads to allow soldering of a set of tiny custom made pogo pins that will allow you to flash an OMGS3 board without physically soldering the two boards together.
This adapter does not ship with an OMGS3. The board shown in the image above is for illustrative purposes only.
7 pogo pins are included. They’re optional to use and require hand soldering to the OMGUSB.
Features & Specifications
- USB-C
- Reset & Boot (IO0) buttons
- 1.27mm header for the OMGS3
- ESD Protection for USB
- 5V Output Power LED
- 3V3 Input Power LED
What about flashing other boards?
Of course! OMGUSB can also be connected to any other ESP32 development board that exposes D+/D-, RESET and IO0. It doesn't include a SerialUART chip as that is not required for native USB flashing, so it can't connect to the TX/RX pins of a board.
Why does it have a 3V3 input pin and LED?
This allows you to see the 3V3 regulator on the OMGS3 boards is getting power and working correctly. If you are planning to use OMGUSB to flash other boards, you can leave the 3V3 IN pin disconnected.
You can also leave the IO0 and Reset pins disconnected if you already have a way to trigger those on your board.