Arduino for STM32

Is the WeAct STM32H503CBU6 at 250mhz supported by Arduino. I expect it must be but can't see it in the H5 list unless it's Generic STM32H503KBUx?

I don't expect I'd notice much difference over STM32F411 at 100mhz but thought I'd try this newer one.

I just discovered it connects if I hold the reset button down and do "Connect under reset" using ST-LINK utility.

I tried again with blink sketch on Arduino IDE and got it working:
holding down reset button while compiling then releasing just before uploading.

Now it connects every time - I guess ...

I left it a day and tried again today, no difference. It connects to STM32F103C6 Blue every time. I also re-installed STM32 boards to Arduino IDE, STM32Cubeprogrammer and updated and downgraded STM-LINK V2 driver using STM-LINK utility but no difference. Also I tried with a brand new sealed one ...

I am using WeActStudio.MiniDebugger ST-LINK V2.1. I tried wigglling the connectors and using male to female dupont connectors but no difference. I am sure this is not the reason though as when I connect to STM32F103C6 Blue it works.

I have been trying the ST-LINK utility to connect. It connects to ...

Hi, I have been using Arduino IDE with STM32F11CEU6 Black MCU for several months with no errors and suddenly today I can't upload anymore. All the IDE settings are correct. I tested with a brand new one (unopened packet) and it also doesn't connect.

So I tried with the STM32F103C6 Blue and it ...

Hi Guys,

First of all I did mean STM32F411 MCU I am using, for now testing with Arduino Nano because the serial monitor works easily.

The circuit I am following is from https://blog.thea.codes/designing-big-honking-button/ you can read about it here if interested. I have read and understand what ...

Hi, I have set up this circuit using LM4040 -10v voltage reference to use with ADC for measuring control voltage input for a digital oscillator design (using design from BHH link below). I have the power and voltage reference circuits working correctly supplying -10V.

I have tested pitch control ...

Hi, I have set up this circuit using LM4040 -10v voltage reference to use with ADC for measuring control voltage input for a digital oscillator design (using design from BHH link below). I have the power and voltage reference circuits working correctly supplying -10V. I am using Arduino Nano for ...

Jeez, this drove me crazy searching for an answer for over a week posting on forums incl. here. I finally find out you need to put settings in Setup - why don't they tell you this!

#include <SPI.h>
#define CS_PIN PB0 //Chip Select or Slave Select Pin

void setup() {
// Initialising the SPI ...

Yes, that is a different post. I was replying to the person who commented. Oh well! (and maybe you should learn some politeness and empathy)

I discovered something very strange, the opamp is working but at a low level. I accidentally connected the 3v3 pin to GND and it amplifies the signal as it ...