12:50 Neil doesn't monitor this project anymore, but others should know he got the notification and indication definitions backwards. Its a Indication that requires a response, while a Notification doesn't

Excellent clear explanation. Thank you!

Thank you so much for this comprehensive tutorial. Almost 2 years made available and still very relevant. Have carefully used your steps but I will like to know how to read temperature data via a simple python code on raspberry-pi. Pardon my ignorance, I am entirely new to python, and I've been using it for a project which the ESP32 has become useful and with your explanatory tutorial, much more resourceful. Thanks.

Great video and speak! Very crystal exposition.

Hello Mr Kolban, this is a wonderful class...

Hello from Turkey @kolban it is great stuff for understanding a BLA device and ESP32 communication..

Great tutorial Kolban... as usual :) . I want to test now !

Thanks for your very good explanation!

Excellent video well presented clear and understandable , thanks very much

Very well explained.

Very Informative Kolban - need to put this info to use. I have to say, this is the most detailed about BT I have seen so far

Hi, Kolban thanks for your clear explanation. I am having a doubt If the client(Sensor) has to send data to the server(ESP32) over Bluetooth what are the changes I need to do in the above code?

Hello Kolban!!! Thanks for sharing!!! is it possible to connect two esp32 with BLE (one as a server an another as a client) ? how to do it?

Very useful, thanks!

nice tutorial, thanks heaps.

brilliant :D

Hi! Thanks for the video! I have an issue. I'm using Arduino IDE and I don't know how to get the device UUID of the ESP32. Do you have an idea? I need it for show it on a QR code and connect it from an iOS app. Thanks!

very nice

Wonderfull!

Hello Kolban Thanks for this great tutorial. I am doing one project in which I need to transfer an audio file from our mobile phone to esp32 via bluetooth, please provide some sort of guidance for it.

Great tutorial helped me clear lots of thing regarding BLE. But Still I need help with to know how to disconnect client from server after certain counter value. Then starts new service with different UUID & Characteristics. For connection of new client.

Hi, great videos, I learned a lot, thanks! I'm thinking on using ESP32 in my engineering thesis on WSN bluetooth network. Would You consider covering also programming ESP32 as client, and communicating 2 ESP32's with each other using BLE? That would be great!

Could you link the video to the c++ classes that encapsulate those BLE functions, you mentioned, I can't find it.

ehhhh, it is great !!! thk a loat !! please conitune put more videos men !!

Sir can you please clarify the 'notification' and 'indication' definition. On various websites it is said that indicate needs acknowledgement and notify doesn't. This is creating a problem in an experiment I am conducting.

Hello thanks, can you helpme im try to do with HM-10 BLE module

Do you have any example of communication between a BLE server and a BLE client in INDICATE characteristic mode. Any hint?

I dont know why, but BLE taking 70-110 mA in works, how i can decrease value ?

hi :) can u help me? how can i disconnect bluetooth after 5 second?

Hey kolban.....That's really very nice work...Thanks....I have a small issue....I established a connection between server and client successfully and I am able to send the data successfully. But, I want a small change here. I will be manually writing the data to the server using a mobile application and I want to transmitt the same data to the client over BLE. Is this possible?? Please help me out..

Dear Kolban, thank you for the nice video tutorial. At 13:02 you indicate that when the server performs a notification it will receive an ACKnowledge when the server performs an Indication, it is fire and forget. Shouldn't it be reversed? I mean notification is fire and forget, Indication requires an ACKnowledge. Thank you.

Hi thanks for the tutorials please can you refer me to a book. I am trying to adapt this technologie to my b2b saas any help will be very welcome

Hello, you are a very smart person, one who likes a challenge?. I have a problem. I want to connect to Zwift cycling program as ble ftms and receive gradient or resistance data, I want to build my own smart indoor trainer. I can connect as heart rate, speed and cadence with my esp32 but not as fitness machine. Any ideas? Anyway I will check out your other videos. Regards Paul.

Thanks for great tutorial. What is this phone emulator?

Excellent tutorial! Thanks. Question: BLE 5.0 support on newer ESP32 SoC means that in theory our BLE signal range should increase 4 times (compared to ESP SoC with BLE4.2, which should only be around 10m or so). But what is it in practice? Is there a real difference in BLE range between ESP32 SoC running BLE4.2 vs the newer ESP32 SoC running BLE5.0. ?

I get a ton of red error messages from this code and it doesn't compile :(

Hi Kolban, Would you please share the Git link of the source? I tried to google it. However, i found github.com/nkolban?page=2&tab=repositories, but I could not find the BLE notifications source. Help please?

Hi Kolban, very interesting thank you, can you post a link to the sample code?

What IDE and environment is it? How to set it up?

hi, thank you for all these interesting videos. I want to ask for a small help "I want to use BLE to communicate with a smartphone app i am using Sparkfun esp 32 things and Arduino for programming " can you point me to a suitable code or tutorials. thank you all in advance

hi thanks for all the help you are doing today i found your esp 32 ble Arduino library in library manager so i dawnloaded to my arduino 1.6 and tryed to run it in my esp32(wroom 32 dev kit ) but it gave me fallowing error C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp: In static member function 'static std::__cxx11::string BLEUtils::gattClientEventTypeToString(esp_gattc_cb_event_t)': C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp:344:8: error: 'ESP_GATTC_CONNECT_EVT' was not declared in this scope case ESP_GATTC_CONNECT_EVT: ^ C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp:346:8: error: 'ESP_GATTC_DISCONNECT_EVT' was not declared in this scope case ESP_GATTC_DISCONNECT_EVT: ^ C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp: In static member function 'static void BLEUtils::dumpGattClientEvent(esp_gattc_cb_event_t, esp_gatt_if_t, esp_ble_gattc_cb_param_t*)': C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp:684:8: error: 'ESP_GATTC_CONNECT_EVT' was not declared in this scope case ESP_GATTC_CONNECT_EVT: { ^ In file included from C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp:22:0: C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp:686:44: error: 'union esp_ble_gattc_cb_param_t' has no member named 'connect' BLEUtils::gattStatusToString(evtParam->connect.status).c_str(), ^ C:\Users\Akshay\Documents\Arduino\hardware\espressif\esp32/tools/sdk/include/log/esp_log.h:144:168: note: in definition of macro 'ESP_LOGD' #define ESP_LOGD( tag, format, ... ) if (LOG_LOCAL_LEVEL >= ESP_LOG_DEBUG) { esp_log_write(ESP_LOG_DEBUG, tag, LOG_FORMAT(D, format), esp_log_timestamp(), tag, ##__VA_ARGS__); } ^ C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp:687:15: error: 'union esp_ble_gattc_cb_param_t' has no member named 'connect' evtParam->connect.conn_id, ^ C:\Users\Akshay\Documents\Arduino\hardware\espressif\esp32/tools/sdk/include/log/esp_log.h:144:168: note: in definition of macro 'ESP_LOGD' #define ESP_LOGD( tag, format, ... ) if (LOG_LOCAL_LEVEL >= ESP_LOG_DEBUG) { esp_log_write(ESP_LOG_DEBUG, tag, LOG_FORMAT(D, format), esp_log_timestamp(), tag, ##__VA_ARGS__); } ^ C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp:688:26: error: 'union esp_ble_gattc_cb_param_t' has no member named 'connect' BLEAddress(evtParam->connect.remote_bda).toString().c_str() ^ C:\Users\Akshay\Documents\Arduino\hardware\espressif\esp32/tools/sdk/include/log/esp_log.h:144:168: note: in definition of macro 'ESP_LOGD' #define ESP_LOGD( tag, format, ... ) if (LOG_LOCAL_LEVEL >= ESP_LOG_DEBUG) { esp_log_write(ESP_LOG_DEBUG, tag, LOG_FORMAT(D, format), esp_log_timestamp(), tag, ##__VA_ARGS__); } ^ C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp:700:8: error: 'ESP_GATTC_DISCONNECT_EVT' was not declared in this scope case ESP_GATTC_DISCONNECT_EVT: { ^ In file included from C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp:22:0: C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp:702:44: error: 'union esp_ble_gattc_cb_param_t' has no member named 'disconnect' BLEUtils::gattStatusToString(evtParam->disconnect.status).c_str(), ^ C:\Users\Akshay\Documents\Arduino\hardware\espressif\esp32/tools/sdk/include/log/esp_log.h:144:168: note: in definition of macro 'ESP_LOGD' #define ESP_LOGD( tag, format, ... ) if (LOG_LOCAL_LEVEL >= ESP_LOG_DEBUG) { esp_log_write(ESP_LOG_DEBUG, tag, LOG_FORMAT(D, format), esp_log_timestamp(), tag, ##__VA_ARGS__); } ^ C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp:703:15: error: 'union esp_ble_gattc_cb_param_t' has no member named 'disconnect' evtParam->disconnect.conn_id, ^ C:\Users\Akshay\Documents\Arduino\hardware\espressif\esp32/tools/sdk/include/log/esp_log.h:144:168: note: in definition of macro 'ESP_LOGD' #define ESP_LOGD( tag, format, ... ) if (LOG_LOCAL_LEVEL >= ESP_LOG_DEBUG) { esp_log_write(ESP_LOG_DEBUG, tag, LOG_FORMAT(D, format), esp_log_timestamp(), tag, ##__VA_ARGS__); } ^ C:\Users\Akshay\Documents\Arduino\libraries\ESP32_BLE_Arduino\src\BLEUtils.cpp:704:26: error: 'union esp_ble_gattc_cb_param_t' has no member named 'disconnect' BLEAddress(evtParam->disconnect.remote_bda).toString().c_str() ^ C:\Users\Akshay\Documents\Arduino\hardware\espressif\esp32/tools/sdk/include/log/esp_log.h:144:168: note: in definition of macro 'ESP_LOGD' #define ESP_LOGD( tag, format, ... ) if (LOG_LOCAL_LEVEL >= ESP_LOG_DEBUG) { esp_log_write(ESP_LOG_DEBUG, tag, LOG_FORMAT(D, format), esp_log_timestamp(), tag, ##__VA_ARGS__); } ^ exit status 1 Error compiling for board ESP32 Dev Module. what have i done wrong any suggestions. i tried several options but all my other codes are complining and uploading except exampal codes from this library .

So much good stuff. For anyone looking for the SampleNotify.cpp file, as of this comment it is found here: github.com/nkolban/esp32-snippets/blob/master/cpp_utils/tests/BLETests/

how the fck do we send data by notifications bidirectional...

Careful now, you're gonna have the girls falling *all over you* talking like this...

i was expecting indian accent

Нифига не понятно, пж снимай на русском языке