Hey everyone:

I made a custom ESP8266 board based on the NodeMCU. I'm getting unusual boot messages and esptool can't find the chip. The complete boot message over UART is "ets Jan 8 2013,rst cause:2, boot mode:(1,6)."

I have the following schematic:



--Sasha

Sorry for my continued confusion.

By "flash pins," do you mean the USB+,USB- and RX/TX pins, used for flashing firmware?

Thank you for your understanding!

Sorry for the late reply!

Does that mean that I can use *any* pin? I know there are many precautions around other ESP32 SoCs because sometimes the SPI flash is connected and some pins are used for strapping.

Hi everyone! I'm new to this forum and am looking for some help. I am working with the ESP32-C3-MINI SoC for a PCB board. I need to have SPI and I2C communication to two devices (SPI to device one, I2C to device two). I cannot devise a pinout for these, as most of the breakout pins appear to be used...