Which STM32 wireless MCU series is the best for RC toy drone project?

[deniz777]

Hello,

I need very low latency, short distance, robust proprietary RF connection with encryption. Drone will not have much complicated functions, just will fly, make flip, hover etc. like other toy drones. For lowest latency, as far as I understand, I need lowest level hardware access. All three of STM32WBA, STM32WB and STM32WB0 are doing it via different ways but which one is better for me, I don’t know. STM32WB looks sensible because it has 2 cores to seperate RF functions for faster responses but it is not one of the latest generations and not sure whether it worth to learn. Which series is the most suitable for such project you think?

 

Thanks for all responses.

[grohmano]

Hello ​@deniz777,

for your requirements - low latency, proprietary RF communication - suits STM32WB0 the best because it provides 2.4 GHz proprietary radio drivers, which is exactly what you need for a custom control link. This allows you to work closer to the radio level, with less protocol overhead, which can lead to lower latency.

It is important to note that low latency is not determined only by the MCU family but also by your wireless protocol design. Especially packet length, retry strategy, radio scheduling and so on. However, choosing STM32WB0 is good starting point.

 

For more information about 2.4 GHz proprietary drivers, refer to this User Manual or you can take a look on other documentation on a product page.

 

If you have any further questions, do not hesitate to ask

Best regards

grohmano