I'm beginner in STM32(f303re CUBE IDE) and anybody know maybe how do the implementation for sensor fs-ir02. Probably it's simple but I have no idea. How to do this with USART2 on NVIC and by simple GPIO? When is another simple way, please show me :)

[MM.22]

..

[Andrew Neil]

Please don't put the entire question in the title - keep it under ~ 70 characters.

Is this what you're talking about: https://www.robotshop.com/uk/gravity-liquid-level-sensor-fs-ir02.html ?

More useful info here: https://wiki.dfrobot.com/Liquid_Level_Sensor-FS-IR02_SKU__SEN0205

"I'm beginner in STM32"

Do you have any experience with any other microcontroller(s) ?

Do you have any experience with programming in general ?

Some microcontroller Getting Started basics:

https://www.avrfreaks.net/comment/1138166#comment-1138166

[MM.22]

I don't have any exp in microcontrollers. Im searching. I'll be thankful if U send me some materials for education in that realm :)

[Andrew Neil]

https://www.avrfreaks.net/comment/2079906#comment-2079906 (which includes the one given above)

Take a look at ST's YouTube channel.

Also their "MOOC" online training:

https://www.st.com/content/st_com/en/support/learning/stm32-education/stm32-moocs.html

If you're not already familiar with C, I'd strongly suggest that you learn that on a PC or similar first - away from all the added complications of small embedded microcontrollers.

[Pavel A.]

You can find a helping hand here.