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Bluetooth was originally a point to point connection. Newer versions of Bluetooth support multipoint, but compatibility may be an issue. Either way, I don't think the Arduino layer supports it. Have you considered ESP-NOW protocol? https://randomnerdtutorials.com/esp-now-many-to-one-esp32/ |
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past year, i modified bluetoothserial library and when 5 phone connect to esp32 and 5 phone able receive data from esp32 through bluetooth serial, but when i update core, bluetoothserial library deleted and i dont remember what i do :( |
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i want share data from esp32 to multi device through bluetooth serial but only one device can connect to it. how to modify library to do that. thx :(
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