For links and discussion on this t ESP32 can be used as a BLE server to support multiple BLE clients to access simultaneously. Home Assistant can directly read ESP32 battery level and Mi Flora sensor measurements without the need of MQTT server. What i did: - esp32 server for testing, - esp32 client that is connecting to esp32 server and sending messages every 1000ms + server that allows to connect another client, This document presents a description of the multi-connection BLE GATT client example for the ESP32. First, we will set up our ESP32 as a server using the BLE_server example and then we will use the Currently this supports Bluetooth Low Energy (BLE) in Central, Peripheral, Broadcaster, and Observer roles, as well as GATT Server and Client and L2CAP connection-oriented-channels. /**. Nov 16, 2015 · I have a user who is attempting to connect multiple BLE clients (centrals) to the same single BLE server (peripheral) hosted on the ESP32. You might want to look through the code and see if either of those However you can get a list of the currently connected clients. 292 -> SleepingCORRUPT HEAP: Bad head at 0x3ffe17b4. Today i wrote simple HID client example that can receive data from HID keyboard and handle it: Espressif ESP32 Official Forum. I did not build any device that requiring ble central + peripheral, but i did quick and simple test with Neil Kolban's library and it works. An ESP32 will act as a GATT server and an ESP32 will act as a GATT client. This will connect to an iGrill deivce and then publish the temperatures of the probes and the iGrill Device battery level to MQTT for use in Home Automation systems. Dec 9, 2023 · This is an App (including iOS & Android) for ESP32 as well as other BLE device. A system where ESP32 becomes a BLE server, iOS and Android be Aug 3, 2023 · Aug 3, 2023. When used as a BLE server, you can simply enable advertising again after a client connects. Hello, I am using the the "BLEClient" example to connect to a BLE device, which works flawless. The supported number of BLE stable connections is 3. This set up illustrates the use case of an ESP32 device acting in a way so that it receives data from different BLE sensors. On the other hand, Apache NimBLE based stack is Bluetooth Low Energy only. By provisioning, the device joins the ESP-BLE-MESH network and its role is changed from an unprovisioned device to a node. I'm using the BLE examples Mar 16, 2022 · Using Arduino Programming Questions. You can use this code as a foundation for creating your own BLE client applications. The Bluedroid based stack (default) supports classic Bluetooth as well as Bluetooth Low Energy (Bluetooth LE). The following figure illustrates this relationship in a sample BLE connection, where the peripheral device (an ESP32) is the GATT server, while the central device (a smartphone) is the GATT client. h files with the changes i saw on github. To do this, go to “Sketch” > “Include Library” > “Manage Libraries”. 2MB APP and 1. Sep 8, 2023 · To build and flash the program of BLE(Bluetooth Low Energy) to ESP32 use the following commands: idf. Whether you're Jun 27, 2019 · Re: Ble Server Connecting to Ble Client. As you can see in first client log there was this log line: Notify callback for characteristic 6e400003-b5a3-f393-e0a9-e50e24dcca9e of data length 2. Once connected, it's just something like 'char-write-cmd 0x0016 00FF0000' where 0x0016 is the characteristic and 00FF0000 is the Sep 29, 2022 · This works exactly how I want. This is dead simple using gatttool on Linux. each server is connected to a sensor (DHT11). And much more!Today I can Sep 17, 2020 · I'm new to BLE on ESP32 and am trying to do something simple. It has been my experience that a stack overflow can be caused by not allocating enough stack space for the FreeRTOS task when either xTaskCreate () or xTaskCreatePinnedToCore () is called. Gspohu mentioned this issue on May 15, 2023. Since many Application Profiles can run on one ESP32, there could be many virtual connection opened to the same remote server. The app named LuaNode_BLE_Client. Pairing (and bonding) is supported on some ports. 1) after disconnect you have to start advertising on esp32 C3 and to start scan in windows app. My issue is that the callback is never called. Create a BLE Server 2. It includes functions for converting data types, managing UUIDs, and Sep 9, 2022 · Answers checklist. Let us know how we can improve this page by filling in Espressif Documentation Feedback Form. It allows to monitor sensor data and control switches and other components via BLE connections (for example from a smart phone): In addition, there is a command channel, which allows to configure the WiFi credentials for the ESP32 over BLE (among other Jan 29, 2023 · This tutorial explains how to use Bluetooth Low Energy (BLE) with the ESP32. Basically, I have an RGB bulb that uses BLE and I want to control it by writing a value to a characteristic. BLEUtils – The BLEUtils library provides utility functions for working with BLE on the ESP32. To verify and uplink the script, press the “up arrow” icon found below: Once the code is uplinked, you will receive the message “ Uplink done ” in the terminal log of the Zerynth Studio. May 5, 2021 · To my understanding, the client is suppose to automatically provision the server esp32 but that has not happened. Then, go to your smartphone, open the nRF Connect app from Nordic, and start scanning for new devices. In this implementation, a single ESP32 working as a GATT client connects to three different GATT servers at the same time. OnOff Client - shows how a Generic OnOff Client model works within a node. Search images: D1 R32 ESP32 This card has classic Bluetooth, BLE, WiFi, ADC, DAC, and more feature. 勾卦害锨 鼻演幔桩. #include "BLEDevice. The phase of provisioning is to assign unicast address, add NetKey and etc. I am using the BLE_client example but I cannot read the data properly. It simply sits idle doing nothing, when a device connects to the BLE server then it will flash an LED. This sketch is a central mode (client) Nordic UART Service that connects automatically to a peripheral (server) Nordic UART Service. So far, I have been able to do a one to one connection and received the orientation and acceleration data. import asyncio from bleak import BleakScanner from bleak import BleakClient async def main (): target_name Jun 14, 2017 · Espressif ESP32 Official Forum. Verify and Uplink the script into the DOIT ESP32 Devkit V1. There is also the physical connection which is the actual BLE link between the client and the server. NUS is what most typical "blueart" servers emulate. cpp and esp32_ble_tracker. The following examples contain detailed walkthroughs: GATT Client Example Walkthrough. [中文] ESP-IDF currently supports two host stacks. I will show you what I had to do. However @nkolban did some research (and I was searching as well) and it seems that by definition BLE supports only one client connection on a server. It's intended to communicate with a client device, such as a smartphone, via BLE and control a LED based on received commands. Feb 4, 2023 · In part 2 of this tutorial we will cover the receiver for ESP32 to ESP32 communication and explore how Notify, Read and Write work with Bluetooth Low Energy Aug 16, 2021 · Re: BLE Client for Windows 10. py flash monitor BLE Data Exchange. to a device. 6. and it comes from this part of code: Code: Select all. The code size requires using the Huge (3MB) Partition scheme instead of the default 1. . ble_client_id (Required, ID): ID of the associated BLE client. In the course, I show how to use both. void handleGAPEvent (esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param); bool The virtual connection is the connection between the Application Profile and the remote server. Plus, you can scan BLE devices around your phone and then view the services, characteristics, and descriptors provided by the devices. Thanks. May 9, 2019 · Clone the example “ BLE Alerts code “. Open the console to debug the status of the For the overview of the ESP32 Bluetooth stack architecture, follow the links below: ESP32 Bluetooth Architecture (PDF) Code examples for this API section are provided in the bluetooth/bluedroid directory of ESP-IDF examples. Postby kolban » Sun Jan 29, 2017 11:48 pm. Nov 14, 2017 · I have my esp32 with my custom service and characteristic. Dec 4, 2022 · BLE通信を試してみる. I am actually trying to scan and transmit data via bluetooth together, with a single antenna, I think it is not possible without stopping the scan. h" //BLE Server name (the other ESP32 name running the server sketch) #define bleServerName "bc1" #define connection_LED 21 /* UUID's of the service, characteristic that we want to read*/ // BLE Service static BLEUUID ServiceUUID("4fafc201-1fb5-459e-8fcc-c5c9c331914b"); // BLE state Characteristic Dec 11, 2017 · Thanks for the answers, and Yes I'm using the BLE_client examples from ESP32 BLE arduino. 帖锨临Arduino IDE虏掩ESP32励闽，掉都侥莺叙隘与（BLE）纬苞窖代臭井考乙锻、苇奈症晨党铣酱晚嫩挟稍 MIT license. The client will often be an app on a phone, or in the case of ESPHome, it This log looks like different. This sketch will connect to your BLE uart device in the same manner the nRF Connect app does. This API is intended to match the low-level Bluetooth About. Code: Select all. I'll use the codes of Neil Kolban. With Bluetooth Low Energy, there are two types of devices: the server and the client. println(" - Created client"); pClient -> setClientCallbacks (new MyClientCallback ()); // Connect to the remove BLE Server. void gatt_perihperal_update_connection_params(uint8_t* client_addr) {. In the library manager, search for “BLE” and click on the “BLE” entry that appears. For an ESP32 to join and work on a ESP-BLE-MESH network, it must be provisioned firstly. esp32. I've tried making adjustments and hacking together other examples but so far no luck. 0 ESP32 is a widely used micro controller developed by Espressif Systems, which features built-in Wi-Fi and Bluetooth capabilities. In the Library Manager window, type ‘esp32 ble arduino’ in the search bar. Jan 26, 2022 · pClient->connect(myDevice); // if you pass BLEAdvertisedDevice instead of address, it will be recognized type of peer device address (public or private) Serial. The issue I have now is that if someone use an app like "lightBlue" or "nRF Connect" and stay connected to my esp32 BLE, I'm stuck, no one else can connect to the device. After that i was able to find those files under; esphome > build > esp32name > src > esphome > components > esp32_ble_tracker > i edited esp32_ble_tracker. The role of GATT client: - Send command to GATT server to turn ON/OFF LED. For example, if the ESP32 Client does not enable BLE SPP first, then it should enable listening with command AT+BLEGATTCWR=0,3,7,1,1 first for the ESP32 Server to transmit successfully. 卷挨憎. By provisioning, the ESP32, as an unprovisioned device, will join the ESP-BLE-MESH network and become a ESP-BLE There are two phases for a device to join ESP-BLE-MESH network via a Provisioner, namely, provisioning and configuration. That is, the client finds a device of interest and opens a connection. This data can include sensor readings, commands, or any information relevant to your application. A ESP-BLE-MESH Provisioner can then provision the unprovisioned device and control a RGB LED representing on/off state, see example code . println(" - Connected to server"); // Obtain a BLERemoteService *getService (BLEUUID uuid); // Get a reference to a specified service offered by the remote BLE server. Dec 31, 2017 · In this video, we will use the ESP32 with integrated OLED as an internet connected Bluetooth Low Energy Client to a Heart Rate Monitor. In this example project, I show how you can use the ESP32 as a client to a BLE server. Postby chegewara » Mon Apr 11, 2022 9:59 am. The "key" of the map is the connection id, and the "value" of the map is the "conn_status_t" struct, which includes a This demo configures ESP32 NimBLE as a BLE client/central which connects to BLE HID servers/peripherals such as BLE mice. What I mean by this is that there are no signs of any events arriving at the ESP32 The library source for the ESP32 BLE support for Arduino. Would anyone kindly guide me in the right direction. 意外と簡単です。 BLE通信は「Central」と「Peripheral」という2つのロールで構成されます。 Centralは情報を要求するデバイス（例：スマートフォンやコンピュータ）、Peripheralは情報を提供するデバイス（例：センサー、ESP32など）です。 Jul 19, 2017 · Re: Changing Supervision timeout on BLE. This guide covers BLE concepts, examples, and Web Bluetooth technology. ESP32 BLE Client（绽甘希撬叽窘允）- 堕晕4. The node has a Configuration Server model and a Generic OnOff Client model, see example code . There is plenty of esp32 BLE HID keyboard examples. This card can be Bluetooth® Low Energy (Bluetooth LE) Bluetooth Low Energy. BLE Jun 1, 2022 · This instuctable has shown how you can run both BLE and WiFi services together on an ESP32 C3. Create a BLE Characteristic on the Service 4. Still not 100% confirmed though. Postby chegewara » Thu Aug 19, 2021 4:51 pm. hi @frostyowned. Start advertising. We value your feedback. Jan 7, 2020 · Hello friends, I'll write in this topic about BLE on ESP32, send and receive text, with clock and without clock. A device may operate in multiple roles concurrently. In the code below, i can see connected or disconnected device connection id. Mar 16, 2022 · hello, I have been working on a BLE project where two ESP32-WROOM-32 connected to BNO055 9DOF sensors send data to a ESP32 client. But it would be good if ESP BLE could be client and scan for other Bluetooth devices at the same time. Expected 0xabba1234 got 0x3ffe1800 Espressif ESP32 Official Forum. 2. in the other hand, an ios or android app who can connect to the esp32 via BLE and update the caracteristic. Ultimately, I would like to send sensor data in a BLE-MESH. In this article, we will discuss the examples: BLE_server and then BLE_scan. - server. With the necessary tools and libraries installed, you are now ready to start developing ESP32 BLE projects on the Arduino IDE. ESPHome config for ESP32 to monitor XIaomi Mi Flora Plant sensors. This component provides a Bluetooth Low Energy (BLE) controller for ESPHome. This is a cheap card ($ 5) with the dimensions and shape of the Arduino UNO, but with the ESP32. Jun 4, 2023 · self. py build idf. cpp is an example how to restart the advertising after a client has connected, see class MyServerCallbacks: public BLEServerCallbacks line 54. Feb 18, 2021 · This project is about a Ble secure server that supports multi-client through the static passkey. - 2x WEMOS LOLIN32 Lite (ESP32) The BLE software stack on the ESP32 consumes a significant amount of RAM on the device. - nkolban/ESP32_BLE_Arduino Dec 15, 2023 · It can be installed via the Library Manager in the Arduino IDE. And txValue is the data to be sent, in this example just a byte incremented ESP32 BLE Client for the Weber iGrill mini, iGrill mini v2, iGrillv2, iGrillv202 and iGrillv3 Devices. Code: Select all Starting Arduino BLE Client application BLE Advertised Device found: Name: SCE8000, Address: d7:ed:14:15:38:03, serviceUUID: 000018ff-5348-494d-414e-4f5f424c4500 Found our device! The rest of the configuration for the GATT Client is performed normally in the same way as the regular GATT Client example. Apr 15, 2021 · I'm trying to develop a bluetooth network with one client and several servers, but they communicate with the client based on "notify". These devices are everywhere these days. Very recently I have begun learning BLE and the esp32 and my goal for the moment is to successully establish a BLE connection between an esp32 (as client) and the nRF52 (as server). In simple terms, the server is implemented on the device providing services, usually these are the devices such as heart monitors, tags, weather stations, etc. Mar 6, 2021 · Hello, I am trying to receive data through BLE on my M5Stack Core 2, which uses an ESP32. Jul 31, 2019 · Re: ESP32 BLE one client connect to multiple BLE servers. In ble mesh you have 3 basic types of devices: - provisioner. bleはBLEインスタンスを指しています。このインスタンスはESP32のBLE機能を制御します。 gatts_notifyは、GATT(Generic Attribute Profile)サーバーとして動作するBLEデバイスから、接続されたクライアントデバイスにデータを通知するためのメソッドです。 With various features of ESP-BLE-MESH, users can create a managed flooding mesh network for several scenarios, such as lighting, sensor and etc. Central mode (client) BLE UART for ESP32. The client connects to the server and makes use of its services. Postby Lucas. It has been tested with ESP32-NimBLE-Mouse and a real BLE trackball mouse. ESP32 BLE client for XIaomi Mi Flora Plant sensors using ESPHome. This is configurable on the GATT Sever side only. The mouse input parameters (for example, x, y, buttons) can be used to control motors, servos, and LEDs. - Registering BLE notification to monitor the temperature of GATT server. The role of GATT server: - Receive the Write command of GATT client and convert it to LED state. The client has the name set as Jan 5, 2019 · BLE client 的 scan、創建和連接 一、基礎知識. Notify. Jul 29, 2017 · In this technical tutorial we look at the ability for an ESP32 using C++ classes to be a BLE Client to a remote BLE server. To communicate with the BLE device, it is important to know the uiids of the various services. Notify more than 20 bytes - MTU #8190. 2規範。 1. 5MB SPIFFS partition. Dec 18, 2022 · Serial. We define the UUIDs as those defined in the ESP32 code. pClient -> connect ( myDevice ); // if you pass BLEAdvertisedDevice instead of address, it will be recognized type of peer device address (public or private) Serial. Bluetooth® API. You can use this app to connect to ESP32 and then control the LED on DOIT ESP32 dev board. Jun 30, 2022 · petrrpancon - I would be interested in the code when finished. String getValue (BLEUUID serviceUUID, BLEUUID characteristicUUID); // Get the value of a given characteristic at a given service. There is a function in the BLEServer class: std::map<uint16_t, conn_status_t> getPeerDevices(bool client); You can use that to get the list of connected clients. BLE V4. Apr 6, 2022 · Re: Multi client ble mesh. If the ESP32 Client does not enable BLE SPP first, or uses other device as BLE client, then the BLE client needs to listen to the notification or indication first. In this example rxValue is the data received (only accessible inside that function). ESP32 can be powered with LiPo battery and battery level is read from ADC pin. 2協議規範的， 本文的描述也僅針對藍牙4. println( " - Connected to server" ); // Obtain a reference to the service we are after in the remote BLE server. It is set up as a Visual Studio 19 project. BLE uses the concept of a server and a client. I plan on using ESP32 for this. Once your ESP32 is set up as a BLE server, other BLE devices can connect to it and exchange data. Then, select ‘Include Library’ from the dropdown menu, and finally, choose ‘Manage Libraries…. I believe the nRF52 works, since I can connect to it using my phone and control the value of characteristics in it. Bluetooth Low Energy GAP. BLE Server and Client. See full list on randomnerdtutorials. Apr 20, 2019 · The ESP32 has integrated Bluetooth Classic and BLE support. Oct 26, 2023 · This means everything is working as expected and the ESP32 is waiting for a BLE client to connect. Arduino IDE孕察ESP32馆百，鼻熄BLE律妖街肩默牧玷、怔大赃赂募梭贞憾乡仙。. 0. For users to make a choice: For usecases involving classic Bluetooth as well as Bluetooth Aug 16, 2021 · Re: BLE Client for Windows 10. There is another thing, esp32 wrover-b module with ipex antenna, if I use this module, and attach another antenna, is it possible for me to use 1 antenna for ESP32 BLE Server for LED Control This Arduino code is designed to set up an ESP32 as a Bluetooth Low Energy (BLE) server. I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there. In this comprehensive tutorial, we're diving deep into the exciting world of ESP32 and BLE (Bluetooth Low Energy) data exchange using ESP-IDF. It’s important to note that the GATT roles of client and server are independent from the GAP roles of peripheral and central. No problems there, even though I suspect my code isn't 'that pretty. Create a BLE Descriptor on the characteristic 5. A function like the following should help you configure the timeout. I'm trying to connect a single ESP32 client to multiple identical BLE motion sensors (with different addresses) at the same time and read their notification data; Arduino IDE. So far, I have been able to get a one to one connection between one server and the client. Start the service. static void notifyCallback ( BLERemoteCharacteristic* pBLERemoteCharacteristic, uint8_t* pData, size_t length Feb 2, 2018 · A word of warning: I stumbled upon this bug report, and it seemed to exactly match the symptoms I was seeing, with both BLE client and BLE server written by me and running on esp32, but it turned out to be different. I hope you like this video. A BLE server is a device such as a heart rate monitor, a wireless thermometer or blood glucose meter. 2) ble connection has timeout parameter, which may be long enough to let you close and re-open app before disconnect happen due to timeout; this is also issue with app Learn how to use Bluetooth Low Energy (BLE) with the ESP32 board to create IoT and Home Automation projects. Jun 13, 2024 · In the above diagram, the ESP32 takes the role of the BLE Peripheral, serving as the device that provides data or services. Hutchinson » Wed Jul 19, 2017 9:04 pm. This is old code (almost year now), but i think it may be what you are looking for: Code: Select all. Not a bug in the client (not disconnecting) but a bug in the server (not restarting advertising). Lastest Changes: Update MQTT Autodiscovery to resolve Home Assistant The code provides a comprehensive example of a BLE client application, demonstrating how to scan for devices advertising a specific service, establish a connection, and interact with remote characteristics. 想要進行 BLE 相關的開發，我們必須具備一定的基礎知識，當然基礎知識肯定是非常簡單的，僅羅列些和本文介紹指令相關的知識。 ESP32 裏的藍牙協議棧是符合藍牙4. You can find also proxy and relay devices, but in this case its not important. i need a code for one esp32 client connecting to multiple ESP32 server . Hello! I have been working on connecting one BLE client ESP32 to two ESP32 servers connected to BNO055 9DOF sensors. Application Example; API Reference BrianAtDocumentedDesigns / BLE-SPP-Client-demo. May 26, 2024 · BLEClient – This library lets you create a BLE client on the ESP32. What we find is that the first client connects correctly but when we attempt to connect the second client "nothing happens". Create a BLE Service 3. Postby chegewara » Sun Aug 11, 2019 12:31 am. It lets you scan for and connect to BLE peripherals, read and write characteristics, and handle notifications. Connection between client and server. You should find a device called ESP32_BME280—this is the BLE server name you defined earlier. Click on “Install” to install the library. 辉傍凑寻：. In Part 1 first some BLE basics are discussed and then focuses on the BLE Server A ESP-BLE-MESH Provisioner can then provision the unprovisioned device and control a RGB LED representing on/off state, see example code . BLE code is now included in Arduino directly. Provisioner is used to add clients and servers to mesh network by assigning address to each element in client Feb 19, 2024 · Here’s a Python script to automatically connect to the ESP32 BLE device from a PC. ESP32にソフトを書き込んだらスマートフォンから操作してみましょう。ここではBLEの検証ツールとしてnRF Connect for Mobileというアプリを使います。アプリを起動後にBLEデバイスをスキャンすると、Arduinoのコードで記述したデバイス名が Jan 27, 2024 · BLE通信の基本. Aug 8, 2019 · In this video, I show you how to make the client-side to connect with the preselected BLE server. The circuitpython documentation on BLE on an esp32 is very unclear, is what I want to do even possible? bluetooth-lowenergy. In your Arduino IDE, click on File > Examples > ESP32 BLE Arduino. Jun 3, 2019 · But when i call client->disconnect(); i get the following error: 22:59:36. I have an arduino that is sending a random integer between 1 and 100 and the ESP32 is reading it. - client. We will display the He /* Central Mode (client) BLE UART for ESP32 * This sketch is a central mode (client) Nordic UART Service (NUS) that connects automatically to a peripheral (server) * Nordic UART Service. I have tried to use nRF Mesh (Andriod) to discover the server esp32 and was able to do so. com Dec 26, 2016 · Re: how to send BLE notification to client. BLE for ESP32: examples of how to scale to very many characteristics and how to send commands from the client to the server Resources ESP32 BLE for Arduino (This repository is kept for archive. * Create a sample BLE client that connects to a BLE server and then retrieves the current. It's worth mentioning that the advertising UUID is different to the service UUID where I connect to, so I needed a little modification, namely scan for one UUID and after connection to the BLE device server, connect to a specific service and then get the Dec 17, 2021 · Then i inserted ble_gateway: and it asked for esp32_ble_tracker and i added that too. adafruit-circuitpython. This will open up several examples to choose from for example BLE_client, BLE_notify, BLE_server, etc. May 27, 2022 · here's the client code. ) The Arduino IDE provides an excellent library package manager where versions of libraries can be downloaded and installed. To install the ESP32 BLE (Bluetooth Low Energy) library, first click on ‘Sketch’ in the Arduino IDE. I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there. It should be easily ported to other devices and/or expanded to multiple devices and/or multiple characteristics. Your smartphone or computer acts as the BLE Controller, managing the connection and communication with the ESP32. I'm not exactly sure how to adjust my code to Oct 29, 2021 · I'm trying to make smart social distancing circuit for COVID 19. i am able to connect to one server and get the temp characteristic. At this point the GATT client, which is usually the master, initiates the pairing process by sending a Pairing Request to the slave device. May 11, 2020 · Hi, I wrote a ble multiconnection server using esp32 arduino. Meanwhile, it can also be used as a BLE client to connect to multiple BLE servers simultaneously. What i'm having trouble doing however is creating an ESP32 client to connect to the BLE device. Dec 22, 2017 · ble_server_example. jaguevara671 March 16, 2022, 8:13pm 1. This is a simple Bluetooth Low Energy Windows 10 console application I developed to debug ESP32 hardware. Resources 知乎专栏提供随心写作，自由表达的平台，让用户分享知识和观点。 Mar 18, 2024 · I have BLE server (written in C++) which the client can read sensor data from and write commands to. 2) ble connection has timeout parameter, which may be long enough to let you close and re-open app before disconnect happen due to timeout; this is also issue with app Dec 16, 2017 · Good news! My fake Polar H7 Bluetooth heart Rate sensor works on my ESP32 using the Arduino IDE. - Board D1 R32 ESP32. The WiFi services tested were simple WebServer, simple NTP client and a Telnet Server. qi id im ii yl ue fr mn tx qf