esp32 can do classic Bluetooth but I think the firmware on Uno R4 WiFi doesn't support it.
on boards with NINA it is possible to replace the firmware with a simple sketch
I have used this proprietary app:
I haven't used it a lot and didn't spend much time looking at the alternatives, but I see LightBlue mentioned often when this sort of subject comes up. I would prefer an open source alternative, but other than that my experiences using the app have been perfect.
The alternative (also proprietary) I see mentioned by Arduino community members is nRF Connect:
I haven't tried nRF Connect.
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It took me a long winter to learn how to use Bluetooth/ BLE. It is NOT as easy as a "serial" connection. The 'peripheral' needs custom code, so does the 'central' AND they need to match.
I worked on a different platform (Sparkfun Artemis) but with ArduinoBLE.
BLE (Bluetooth Low Energy) is even the easier / lighter form, used by most devices.
The ArduinoBLE does not have a lot of examples and none with a 'central' running on another platform.
If you look at apollo3/ArduinoBLE_special at master · paulvha/apollo3 · GitHub and focus on the examples. There are a larger number of examples and some that use BME280 or SPS30 or switch input/output where a 'central' is running on Ubuntu and/or Android. For the latter you will need to install Android Studio and study that as well.
I could be wrong, but I believe that the ESP32-S3 on these boards only support BLE.
At least that was what mentioned in the thread:
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My question is Does the R4 UNO WiFi Board start BLE transmissions as soon as it gets powered ..? If so can it be identified by any BLE scanner app? I powered my R4 by a standard external power supply and tried to detect its BLE transmission using BLE scanner mobile app available in Google Play Store. I kept my mobile near R4 but it could not detect. That is why this basic question.
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Thank you all! I'd be lost without forums.
I'm trying to drive two dc motors with a ps4 or Xbox controller.