how to control Arduino from PC over BLE

Hi I was trying to control my nano 33 BLE from PC over Bluetooth. Problem is I can only upload sketch to initialize the onboard BLE module but when I disconnect Arduino from PC and power it with an external battery I can no longer detect it on PC (I do have a MATLAB code that can scan available BLE device).

Is there a way to automatic enable BLE when turn on Arduino?

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hi zzh2501,

I have to agree with you bob. This question has already been asked several times.
But first welcome to the forum and a short answer.

I'm pretty sure, that you don't comment the line: "while (!Serial);" at start of the setup-function.
If the serial monitor isn't open, the program will hang there and will never start his Ble Function.

And again, in friendly words: please read first some other topics, which could solve your problem, because if everyone open a new topic, we will have very fast over 1000 topics and no one will find anything or would like to answer, because wouldn't be a hobby anymore, this would be work.

Best regards,