Help Choosing the Right STM32 Chip for My VCU Project

[UmutTuzlu]

Hi everyone,

I started designing PCBs last year and have completed a few projects using Arduino and ESP32. For my new project, however, I need to use an STM32 microcontroller. I could technically use an ESP32 as well, but STM32 is more suitable for industrial applications, so I decided to switch.

I already have a STM32F401CCU6 Black Pill board, and I can use that chip — but I’d like to ask for advice: Is there a better STM32 option for my project?

Here’s a brief description of the project:
I’m building a Vehicle Control Unit (VCU) for the Teknofest Efficiency Challenge Race. The race is mostly focused on minimizing power consumption.

In the VCU, I need to connect and manage the following components:

• 3 × DS18B20 temperature sensors

• 1 × Hall-effect or proximity sensor

• 1 × LoRa module

• 1 × SD card module

• 1 × Nextion HMI screen

• 1 × relay

Any suggestions or guidance about which STM32 chip would be most suitable are greatly appreciated.

Thanks a lot for your help!

[Andrew Neil]

https://www.st.com/en/development-tools/st-mcu-finder-pc.html

https://www.st.com/en/development-tools/stm32-finder.html

https://www.st.com/content/st_com/en/stm32-mcu-developer-zone/mcu-portfolio.html

Distributors often also have parametric search facilities...

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@UmutTuzlu wrote:

The race is mostly focused on minimizing power consumption.

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makes this seem an odd choice:

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@UmutTuzlu wrote:

• 1 × Nextion HMI screen

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Lowest-power STM32s: https://www.st.com/en/microcontrollers-microprocessors/stm32-ultra-low-power-mcus.html

[UmutTuzlu]

Thanks for advices. I will take a look to links