For complex numbers you can use the FFT for the IFT:
ift = conjugate, fft, conjugate, scale
Check a math book for details.

When I bought the ESP32-C3 DevKitM-1 they make you read a statement on what Engineering Sample means. I clicked through quickly but I think they’re saying not all features are present ( jtag debugging I think and not all specifications are met). You might not want to do BLE5 range tests for example....

I thought it might be a joke. I saw a sort of a Frankenstein board.
But on the internet it’s hard to tell a joke. I made sure it was not April 1.
A lot of functional redundancy. I missed the zig-bee gateway application.
I’ll stick with the ESP32-C3.

I’m confused

I had trouble with zsh but ordinary install worked with bash
chsh -s /bin/bash
Big Sur now defaults to zsh.
Couldn’t get fish to work with IDF either

What chip would you switch to instead of adding an external adc?

Exactly.
That’s a good question. Maybe it’s too difficult to put a good ADC a microcontroller.

I just saw this. I was waiting for the GPS version.
I wonder how they get those tiny maps in there

https://www.cnx-software.com/2021/03/21 ... rosd-slot/

I seem to remember it was something like:
pio run -t menuconfig
And the terminal needed to be resized.
But I haven’t used it in a while.

Edit. Oh, I was also using Platform IO with VS Code. So not much help I guess.

This guy gets the best battery numbers. His ESP32 “Trig Board” spends its time off and is triggered on (by a RTC or sensor) sends a message, then turns off.
https://www.tindie.com/products/kdcircu ... -platform/

The internet is buzzing over some new silicon in a MCU from the Raspberry Pi foundation.
But this only emphasizes how far ahead the ESP32 was years ago. And may still be. Really. The M0+
Not perfect. The ADC and in-circuit debugging are troublesome.
But it has a radio in it!