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

This is MicroSD to JTAG adapter for ESP32 plus a fancy header with a plastic shroud, Model FTSH-105-01-F-DV-K , 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,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: The header has been populated on the adaptor pcb. You don't need to solder it.

PCB Color: Mat black

Product options:

• MicroSD to JTAG adapter with Header for ESP32 only

• MicroSD to JTAG adapter with Header for ESP32 plus Cortex debug cable/15cm.(Cables is only available for order outside of USA at this moment, we will send the inventory to USA soon)