FAQ

Q: What is the approximate output current of the 3V3 pin?

270mA

Q: After downloading a program to the module, sometimes it fails to connect to the serial port or fails to flash during subsequent downloads?

Method 1: Press the reset button for more than 1 second, wait for the PC to re-detect the device, and then upload again.

Method 2: Long press the BOOT button, press RESET at the same time, then release RESET, then release the BOOT button, at this time the module can enter the download mode, which can solve most of the problems that can not be downloaded.

Q: When setting up the environment or creating a project, there is no ESP option shown below?

In VS Code, press the shortcut key F1, search for Espressif IDF, and you will find it marked as an untrusted extension. Set it to trusted.

Q: After switching to another ESP of the same model, the flashed program malfunctions?

Please re-select the COM port and the driver object after switching ESP, then recompile and flash.

Q: After powering on the module, the detected USB port continuously resets and restarts?

Check if the power voltage of the USB port is less than 5V. Generally, the power voltage of the USB port is above 4.9V, and both USB ports of the module can be used normally. If it is below 4.9V, there may be a power supply shortage and USB disconnection issue. In this case, a USB port with sufficient voltage should be used.

Q: When performing JTAG debugging, the debug page never appears?

Close the OpenOCD below and reopen it.