ESP32 Lolin Lite Bluetooth issues on Windows

[Sflofler]

Hi! I got this ESP32 Lolin Lite device because It has integrated BMS and I want to make sure if you guys ever ran into the same issue with this device. It works just fine on other ESP32 devices but this one seems to only work on my Android device, not Windows.

This is the device: https://www.aliexpress.com/item/1005007869719903.html

[LeeNX]

@Sflofler which sketch you trying and what problem you seeing with Windows?

Have you tried the TroubleshootingGuide?

[Sflofler]

The sketch is pretty simple, just to check connectivity, which works with all my other devices.
Haven't tried the troubleshoting guide, will take a look!

#include <Arduino.h>
#include <BleGamepad.h>

BleGamepad bleGamepad("MyGamepad", "Sflofler", 100);

void setup() 
{
    Serial.begin(115200);
    bleGamepad.begin();
}

void loop()
{
    Serial.println("Looping...");
    delay(1000);
}

To be more precise, it takes a long time for the device to show up in the BT search devices menu but I can't connect, it says something like "try again later".

I ended up testing on a laptop yesterday and it worked. I guess my BT dongle is not that good tbh, but it is weird that it works with my other esp32 devices and not this one in particular.

[LeeNX]

Had similar problems, but not with Windows. Normally my problem turned out to be the BLE Attrib caching. Delete the old or similar devices in the host OS, so rediscovery fully queries the BLE device and collects all the current Attribs.

Other than that, should be no reason to not work if all things are good. Could be the BT dongle or drivers, but that is pretty hard to test, unless you have another BT dongle, but I would worry about drivers and Windows registry things, which I know just enough to remember odd ball behaviours with off brand devices and their shipped (old and buggy) drivers set some registry value.

I hope you track down the problem. Why I try and have a few different test devices around to check against.

Let us know how it goes.