esp32-snippets: BLEScan can't find all Bluetooth devices around me

Hi there,

I’m using Arduino IDE do code my ESP32 and I’m having problems in identifying all the Bluetooth devices around me, it seems that ESP32 is not able to find, for example, my phone.

Note: For context, I’m trying to scan Bluetooth devices to save the Mac Addresses from the 3 devices with the strongest signal in order to send those Mac Addresses through an http request to verify if they’re authorized devices to connect or not.

#include <BLEDevice.h>
#include <BLEUtils.h>
#include <BLEScan.h>
#include <BLEAdvertisedDevice.h>

const int buttonPin = 36;     // the number of the pushbutton pin
//const int ledPin =  13;      // the number of the LED pin

// variables will change:
int buttonState = 0;         // variable for reading the pushbutton status
int scanTime = 20;

class MyAdvertisedDeviceCallbacks: public BLEAdvertisedDeviceCallbacks {
    void onResult(BLEAdvertisedDevice advertisedDevice) {
      Serial.printf("*** Advertised Devices ***\n");
      Serial.printf("Name: %s // Address: %s // RSSI: %d \n\n", advertisedDevice.getName(), 
advertisedDevice.getAddress().toString().c_str(), advertisedDevice.getRSSI());
    }
};

void setup() {
  pinMode(buttonPin, INPUT);
  Serial.begin(115200);
}

void loop() {
  // read the state of the pushbutton value:
  buttonState = digitalRead(buttonPin);
  //Serial.println(buttonState);

  if (buttonState == HIGH) {
    Serial.begin(115200);
    Serial.println("Scanning...");
  
    BLEDevice::init("");
    BLEScan* pBLEScan = BLEDevice::getScan(); //create new scan
    pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks());
    pBLEScan->setActiveScan(true); //active scan uses more power, but get results faster
    BLEScanResults foundDevices = pBLEScan->start(scanTime);
    Serial.print("Devices found: ");
    Serial.println(foundDevices.getCount());
    Serial.println("Scan done! \n");
  }
}

About this issue

Original URL
State: open
Created 6 years ago
Comments: 45 (5 by maintainers)

Most upvoted comments

There seems to be an issue with this example. It lists a bunch of bluetooth data, but then says there are 0 devices found.

I tried editing BLEScan.cpp to the following, but that doesn’t seem to work either???

‘’’ if (m_pAdvertisedDeviceCallbacks) { // if has callback, no need to record to vector

				} else if (!m_wantDuplicates && !found) {   // if no callback and not want duplicate, and not already in vector, record it
					m_pAdvertisedDeviceCallbacks->onResult(*advertisedDevice);
					m_scanResults.m_vectorAdvertisedDevices.insert(std::pair<std::string, BLEAdvertisedDevice*>(advertisedAddress.toString(), advertisedDevice));
					shouldDelete = false;
				}

‘’’

Output: 16:26:15.285 -> Scan done! 16:26:17.302 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:17.339 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:17.339 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:17.377 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:17.377 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:17.451 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:17.489 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:17.489 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:17.559 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:17.559 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:17.559 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:17.597 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:17.597 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:17.633 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:17.668 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:17.668 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:17.703 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:17.741 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:17.741 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:17.778 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:17.815 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:17.852 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:17.852 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:17.886 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:17.886 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:17.922 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:17.956 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:17.999 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:17.999 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:17.999 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:18.036 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:18.069 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:18.069 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:18.107 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:18.107 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:18.180 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:18.180 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:18.180 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:18.217 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:18.289 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:18.289 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:18.289 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:18.327 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:18.327 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:18.364 -> Advertised Device: Name: , Address: 70:b3:3e:40:a6:b4, manufacturer data: 7500021821a14f83ff91a2a1ec6d42a617db0a9a 16:26:18.364 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:18.403 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:18.403 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:18.440 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:18.476 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:18.476 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:18.512 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:18.512 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:18.581 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:18.616 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:18.653 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:18.653 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:18.690 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:18.764 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:18.800 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:18.800 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:18.800 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:18.834 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:18.871 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:18.907 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:18.907 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:18.907 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:18.907 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:18.977 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:19.014 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:19.014 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:19.051 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:19.088 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:19.125 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:19.125 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:19.170 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:19.198 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:19.198 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:19.198 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:19.233 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:19.305 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:19.305 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:19.378 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:19.416 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:19.416 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:19.484 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:19.484 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:19.521 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:19.521 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:19.593 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:19.593 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:19.593 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:19.630 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:19.630 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:19.668 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:19.705 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:19.705 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:19.741 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:19.775 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:19.775 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:19.812 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:19.850 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:19.850 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:19.850 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:19.888 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:19.888 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:19.925 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:19.962 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:19.962 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:19.999 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:19.999 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:19.999 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:20.037 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:20.074 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:20.110 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:20.147 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:20.147 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:20.147 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:20.181 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:20.181 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:20.251 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:20.251 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:20.288 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:20.362 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:20.399 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:20.399 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:20.399 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:20.474 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:20.474 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:20.474 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:20.474 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:20.508 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:20.544 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:20.582 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:20.620 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:20.620 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:20.655 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:20.692 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:20.763 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:20.763 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:20.799 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:20.799 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:20.799 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:20.835 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:20.873 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:20.944 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:20.981 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:20.981 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:20.981 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:21.018 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:21.055 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:21.093 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:21.093 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:21.093 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:21.130 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:21.130 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:21.165 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:21.203 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:21.238 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:21.308 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:21.308 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:21.344 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:21.344 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:21.377 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:21.377 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:21.415 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:21.562 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:21.598 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:21.598 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:21.598 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:21.634 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:21.634 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:21.634 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:21.668 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:21.702 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:21.774 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:21.811 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:21.811 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:21.849 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:21.883 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:21.918 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:21.918 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:21.918 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:21.990 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:21.990 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:22.062 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:22.062 -> Advertised Device: Name: , Address: 64:e6:61:56:68:b1, manufacturer data: 7500021811a112e590d6c0eae78f51ad1946edd4 16:26:22.062 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:22.132 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:22.132 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:22.168 -> Advertised Device: Name: , Address: 79:cc:ea:6b:73:94, manufacturer data: 4c00100503180efef6, txPower: 12 16:26:22.168 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:22.168 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:22.168 -> Advertised Device: Name: , Address: 67:fc:f8:76:11:73, manufacturer data: 4c001005071c5090bd 16:26:22.206 -> Advertised Device: Name: , Address: 70:b3:3e:40:a6:b4, manufacturer data: 7500021821a14f83ff91a2a1ec6d42a617db0a9a 16:26:22.243 -> Advertised Device: Name: , Address: 4b:64:bd:d9:81:c7, manufacturer data: 0600010920020f44a4f7fe63c0b57ecb9b0f9052f23fb98442d02f5ecf 16:26:22.243 -> Advertised Device: Name: , Address: 50:3f:9a:38:4a:fe, manufacturer data: 060001092002e81f219b0a99b78caf97b91d6b98d74bf0439a246d97fc 16:26:22.243 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401206f17070000000000000000000000000000000000 16:26:22.277 -> Advertised Device: Name: , Address: d8:e0:e1:85:05:c9, manufacturer data: 7500420401016fd8e0e18505c9dae0e18505c899435200000000 16:26:22.313 -> Devices found: 0 16:26:22.313 -> Scan done!

mbrunton22 on Jan 21, 2022

It seems there is great interest in scanning for classic bluetooth devices. But I still haven´t found out on how to get it work. My idea is to unlock a door as long as my phone is in range without any need to constantly run a beacon on the phone

waldorffsmama on Jan 28, 2019

@Donderda It’s worked. I down the tx time of the beacons (3s to 1s) and now with a scan time of 5s i always find my beacons.

Thanks

marcoavaccaro on Apr 2, 2019

Probably you are run out of heap. This is very good example to study the case: https://github.com/tobozo/ESP32-BLECollector

@tobozo did great job

chegewara on Mar 3, 2019