thanks everybody

Yes but the pulse comes before all instructions.
I've the pulse also in blank device. My hypothesis is that is the first time from reset release when the core checks the strapping pins, but I didn't find any informations in documents I read.

Hello, on my board I drive a led lamp with a ESP32C3. I use also PWM engine. The logic is GPIO7=0 --> LED OFF GPIO7=1 --> LED ON On power on and on rise of EN signal (manual reset) the led flashes for about 0.1s then the led switches off and application starts and it works fine. I added the instruct...

Hello,
as long as I kwon GPIO8 pin has not a internal resistor, so may be not correct to left it floating to correctly go on "download mode"
Check "strapping pin configuration" on the manual.
Regards
Leotordo

Hello,
I don't know why you have to use JTAG. Sorry, in my experience with ESP32C3 I used USB directly just for a test. Now I download code only via uart with a USB/UART converter
Bye
Leotordo

Hello, I designed a board with ESP32C3 and wrote FW with ESP-IDF. On my pc I've installed all required prerequisites: Java, Git, Python etc. and IDF. I download bin file by UART and a little board with two switches for reset and GPIO9 Now, I've to send informations, binary and hardware to our assemb...

Hello everybody. I've got esp-homekit-sdk from Espressif and I built the example "lightbulb". It works fine. I can change led status from may Home App. Now, I want to switch on/off the led also by a mechanical switch. I modified the code for reading a GPIO input connected to this switch. I works, bu...

ESP_Minatel wrote: ↑

Thu Feb 02, 2023 5:15 pm

[...]

Hi,

You can flash an unprogrammed ESP32-C3 using Arduino IDE.
If you talking about pins 12 and 13 on the MINI1 module, these pins are the low-frequency crystal (32kHz). Internally on the module, you will find only the high-frequency crystal (40MHz).

Thank you very much
Stefano

Hello everybody. Sorry but I'm newbie in ESP32 World. I developed a simple application with ESP-WROOM-32 Dev Kit Board (like AZ Delivery board for example). I connected USB cable and with IDE I wrote my code. Now I want to use ESP32­C3­MINI­1 module https://www.espressif.com/sites/default/files/docu...