If you are from United State, it is better to order our product from our official website Blinkinlabs

The PCB has a space for soldering a 1.27mm header (either a fancy one with a plastic shroud, or a simple set of pins, neither included), and fits directly into the microSD card interface on your project. Then, you can debug your project using JTAG. This works well with the ESP-PROG debug adapter from Espressif (not included), or likely any FTDI debugger that is supported by OpenOCD.

There is also an optional jumper on the bottom of the board for connecting the 3.3 pin on the microSD card to the JTAG adapter; this can be connected if required by your JTAG programmer.

For this to work, your project / development board must have the microSD slot connected to the ESP32 using the 4-line SDMMC adapter on slot 1, with at least the clock, command, data2, and data3 pins wired. This is because the JTAG pins all happen to coincide with the SD pins.

Please note: This includes just the PCB, you will need to provide your own 1.27mm header. If you want the one with a header FTSH-105-01-F-DV-K include, please click MicroSD to JTAG adapter with Header for ESP32

Color: Mat black