GPIO12 is also one of dedicated JTAG pins.
If you plan to use JTAG then its operation will interfere with an application toggling DTR.
Apart from that I do not see issues with using GPIO12 as an output.

Do you mean DTR (Data Terminal Ready) input to control serial communication? GPIO12 or MTDI is one of Strapping Pins and should be either pulled down or pulled up on power-on reset. External device connected to GPIO12 should not pull in opposite direction on power on reset, or ESP32 will likely fail...

Hello kishan patel,

Yes, you can but there are some restrictions.

Is this just a matter of preference, or is there a logical reason to use ESP_LOG(I/W/E) over "I've seen it done so that's why I do it" type mentality. Hi mikemoy, I think that for most of ad hoc debuging this it is a matter of preference with indication to use printf. ESP_LOG(I/W/E) are intended to...

There is a 4.7uF and a 100nF capacitor on the power rails... I would also add bigger uF value decoupling capacitors following Espressif's reference designs, see ESP32-DevKitC Reference Design . The design contains 22uF and 100nF capacitors for the ESP32 module, not counting 22uF nearby on the outpu...

Hi adherent,

adherent wrote:Any idea or hint will be highly appreciated!

Ref: https://github.com/espressif/esp-idf/issues/1096

Hi Steve, The data would comprise four arrays of 32768 Int numbers representing the voltages. These would be collected at rates up to 15000 samples per second. The STM32F103 doesn’t have the capacity to store this amount of data so it is sent directly to the PC via USB at 512000 bps. I don’t know if...

Hi BaartCM, The code for this is here https://github.com/BaartCM/FFT-Analyser I have modified the code to work with the ESP32 and it is functioning fine. Nice project! If you like to make it internet enabled then you are in the right place :D Ideally, I see a hub like a Raspberry Pi connecting to se...

Hi Archibald,

Indeed there is 'gamma' already declared in arduino-esp32, see https://github.com/espressif/arduino-es ... ath.h#L297

1, copied esptool.py from esp/esp-idf/components/esptool_py/esptool to ~/Arduino/hardware/espressif/esp32/tools, and changed DEFAULT_PORT to /dev/ttyUSB1. Hi huaxiaozhong1 again :) Reading https://github.com/plerup/makeEspArduino#including-the-makefile it looks to me that you need to set UPLOAD_POR...