Arduino for STM32

Since this is a new stm32duino, I thought I would talk about the projects I've developed, so far with Roger's core


Theremin

https://github.com/profdc9/MCTheremin

A theremin that has both pitch and volume control and digitally synthesizes the audio signal using an external DAC (MCP4921).


Vector Network Analyzer (VNA) from 100 kHz to 600 MHz:

https://github.com/profdc9/VNA

This is a 2-port VNA that is good for testing antennas, filters, or other components. It really is an impedance meter, but provides results that are consistent with 50 ohm ports.


Modular Antenna Tuner for HF band (1.8 MHz-30 MHz):

https://github.com/profdc9/ModularTuner

A homebrewed antenna tuner for the HF band that automatically matches the impedance of an antenna to 50 ohms. It has ICOM rig support as well.


STM32alt

https://github.com/profdc9/STM32alt

A Bluepill you can build or modify yourself that uses generic parts (except for the STM32F103C8T6).


STM32F4ThruPill

https://github.com/profdc9/STM32F4ThruPill

A Bluepill pinout compatible board that uses the STM32F405RGT6 processor.

Thanks for sharing.
I like the Theremin one

Hi...Didn't check your design, simply generally impression. Looks efficient however I would favor a portion of the average hardware, (for example, the gem) in the normal area close to the mpu. Your ground image isn't really ground yet earthing (or some of the time instrument ground). I would call it gnd or gndd however not gndref.