Redefinition of bluetoothserial serialbt
Redefinition of bluetoothserial serialbt. How would you go about using the UNO to write these commands? I setup the serial at 115200 baud rate and then I try Oct 11, 2017 · Open the Bluetooth Serial Monitor app. Feb 20, 2019 · After that, we will declare an object of class BluetoothSerial, which we will use to initialize the Bluetooth interface and to configure the event handling function. 2 with SPP (BluetoothSerial and other Profiles) as well as for BLE 5. println(receivedChar);// write on BT app. The ESP32 Bluetooth library that you’ve to include is “BluetoothSerial. h" BluetoothSerial SerialBT; Moving on to the Arduino setup function, we will open a regular wired serial connection, to output the results of our program. Mar 23, 2021 · The basic ESP32 Arduino Bluetooth Serial example pairs and connects as expected, BUT once I disconnect the Bluetooth terminal it stops responding to new events at all, once I reset the esp32, it st Jul 10, 2023 · Board m5stampC3U Device Description plain board Hardware Configuration nothing attached Version latest master (checkout manually) IDE Name Arduino IDE Operating System linux mint Flash frequency 160MHz PSRAM enabled no Upload speed 92160 You signed in with another tab or window. h" #include <OneWire. println(SerialBT. begin() it remains about 150k which means 60% of the RAM is consumed. Mar 16, 2021 · 10Gtek BT-06 Wireless bluetooth serial RF transceiver mini BT module, compatible HC-06, for UNO R3 Nano Arduino, Pack of 2 4. ; inverse_logic: used to invert the sense of incoming bits (the default is normal logic). Jan 30, 2021 · Hi Guys, i don´t know if my post belongs here since its about an esp32 but I hope its ok anyway. BluetoothSerial SerialBT; Defining outputs variables Tutorial - Using HC06 Bluetooth to Serial Wireless UART Adaptors With Arduino: Sending data between an Arduino or compatible board and a Bluetooth-equipped device such as an Android smartphone or tablet is very easy thanks to the inexpensive HC06 Bluetooth module we have in stock at PMD Way. void loop() { while (SerialBT. Feb 17, 2024 · didn't even know there are serverla tabs and that they interfere with each other. begin(String, bool)でBluetoothデバイスのローカルネームを登録し、 Bluetoothシリアルデバイスを開始します。 第一引数に設定した文字列がデバイス名として表示されます。デフォルト値ではESP32となります。 Nov 30, 2020 · After loading a code with the BluetoothSerial. You switched accounts on another tab or window. Bluetooth is a wireless technology widely used for communication between electronic devices. May 4, 2022 · HC-05 is a serial Bluetooth Serial port protocol module that is easy to use. Oct 25, 2022 · Looking at the paths that give error, you are not using this core's Bluetooth Serial library, but some other one located in your sketch folder: C:\Users\eshel\OneDrive\Documents\Arduino\libraries\Bluetooth Serial You signed in with another tab or window. c_str ());} void setup {Serial. The UART-style communication mode makes it a favorite choice for Arduino enthusiasts. When I send a certain string value, the null value is sent with it. Question 1 Can I modify the BluetoothSerial. 3. Bluetooth Classic (with EDR/BR) up to verion 4. It makes working with Classic Bluetooth almost as easy as working with a serial connection. #endif BluetoothSerial SerialBT; #define BT_DISCOVER_TIME 10000 static bool btScanAsync = true; static bool btScanSync = true; void btAdvertisedDeviceFound (BTAdvertisedDevice * pDevice) {Serial. It is only available for the ESP32 chip. ) May 2, 2023 · The goal is to send and reveive data from my phone (android with mitappinventor app) #include "BluetoothSerial. Aug 28, 2020 · I'm currently trying to send data from esp32 to my android app that I made. begin ESP32 Bluetooth Serial Library APIs. The pin is specified on the line below. Sep 30, 2021 · Hello everyone! I'm doing some tests sending and receiving data via bluetooth on ESP32. The tests were performed using a DFRobot’s ESP32 module integrated in a ESP32 development board. You signed out in another tab or window. Aug 28, 2023 · it should be able to identify Arduino library "BluetoothSerial. I have looked through the readme and there isnt anything mentioning defining or modifying the SerialBluetooth. h“. cpp to disable some unnecessary part to free some RAM? For now, I'm trying to add some switch to control the BluetoothSerial enabled or disabled such as a toggle button. But when I'm using serial1 (or serial2 / serial3), the terminal just prints Aug 15, 2018 · After BluetoothSerial. read() and sent to the Serial Monitor using Serial. 19 Operating System Windows Flash frequency PSRAM enabled no Upload speed Descriptio Feb 10, 2023 · ESP32 から Ubuntu 24. How open complete the pairing from Windows 10 PC. The idea is to send a message from a smartphone, receive the message and update variables from that message which will affect what the Arduino does. Exception was unhandled. Mar 13, 2018 · BluetoothSerial SerialBT; Moving on to the Arduino setup function, we start by opening a wired serial connection, so we can print the content we receive via Bluetooth. If I add bluettooth this value jumps up to 96% memory used. begin(115200); Initialize the Bluetooth serial device and pass as an argument the Bluetooth Device name. begin("Esp32"); Serial. Connections You can use hardware flow control CTS/RTS lines or ignore them depending on your system design details. Mar 1, 2024 · In this tutorial, we’ll learn how to activate, manage and test Bluetooth on an ESP32 using the Arduino programming language. i had followed documentation by espressif and added arduino as component Mar 14, 2018 · As can be seen in the header file of the BluetoothSerial class, it inherits from the Stream class. 04 上の Arduino IDE 2. cpp file should contain the definition in the following form without the keyword class: May 11, 2021 · Hi everyone, I am trying to connect ESP32 via bluetooth classic to my PC to transfer some data from a sensor. Jan 26, 2020 · ESP32からデバイスにBluetooth SPPで接続する. println(receivedChar);//print on serial monitor 関数解説 SerialBT. Then turn off power, disconnect programming circuit and enjoy using your brand new bluetooth serial bridge. Bluetooth send extra char at the end of string data. I had it up and running in minutes just by exploring the menus. I've put the code for both boards below Jul 10, 2014 · Hi Everyone, Recently, as part of a larger project, I've tried to get one of the project's fundamentals to work. It communicates with Arduino via Bluetooth. begin()は、Bluetoothシリアルに名前を指定します。指定した名前でペアリングします。 Serial. For that we implemented 2 SoftwareSerial objects and the Serial port for the Serial Dec 16, 2019 · SerialBT. If everything’s OK, this should be what’s on your screen: Send “1” from the app and the LED on the board should turn on. The macro functionality is especially useful when debugging custom Bluetooth protocols, allowing complex command strings and control characters to be entered quickly. Jun 1, 2018 · ESP32でbluetooth接続を試した. Nov 5, 2022 · as stated by @UKHeliBob you need to check if data is available before attempting to read, e. available()); return SerialBT. available( ) 확인가능 문자는 SerialBT. May 21, 2015 · Hi we are using an Arduino Micro and working with a Bluetooth device and a Rfid Scanner from Sparkfun(ID-20 LA). You signed in with another tab or window. Dec 9, 2018 · In this tutorial we will learn how to detect the client connection event when using the Bluetooth Serial library of the Arduino core. printf ("Found a device asynchronously: %s \n ", pDevice-> toString (). The BT-USB connects to the USB port on a PC or notebook computer. Hello All, I've been trying to get the example SerialToSerialBT sketch in the Bluetooth Serial library to compile to no avail. 1 IDE name: Arduino IDE Flash Frequency: 80Mhz Computer OS: Windows 10 Description: BluetoothSerial. You can communicate with HC-05 over serial protocol. "This library handles the data formating, transmission and receiving with the Mar 29, 2021 · COMポートが2つ追加されますが、Bluetooth設定のCOMポートタブで、名前にESP32SPPを含むポートを選択すれば通信できます。 ↩ 実際にはM5側でも接続するか否かをユーザに選択してもらい、esp_bt_gap_pin_replyを呼び出すという形になります。 Feb 9, 2023 · Here is the answer I found online for the m5stamp. 3 Operating System Windows 11 Flash frequency 80MHz PSRAM enabled no Upload speed Handles the Bluetooth Serial connection to BluetoothSerial Connect iOS app. BluetoothSerial SerialBT; Moving on to the setup function, we will start by opening a regular serial connection, to print the results of our Sep 11, 2020 · Hi, I'm working on an hobby project to communicate bluetooth device (ELM327), using Elmduino library GitHub - PowerBroker2/ELMduino: Arduino OBD-II Bluetooth Scanner Interface Library for Car Hacking Projects, this libr… Hardware: Board: DOIT ESP32 Dev Module Core Installation version: 1. The development tools say that the command for power on for example is "AA 00 03 02 00 51 AA". begin(String name): inicia la instancia BluetoothSerial y asigna un nombre para tu ESP32. As covered here, this library allows to establish a serial connection over Bluetooth, leveraging the Serial Port Profile (SPP). The Stream class inherits from the Print class, which means that we can use the println method to write to the Bluetooth serial port. Now I want the Arduino to do the communication, but can't get it to work. Table 1. readString(); You can not read the serial buffer twice and expect to see the same data. #include <SoftwareSerial. In order to troubleshoot, I send the string back to the computer over Hardware Serial to check that it works well by using the Arduino IDE Serial Monitor. What I've done: I started with this project: GitHub - delhatch/ESP32_to_SMA: ESP32 connects to SMA Sunny Boy inverter over Bluetooth but I did not get past the connection. h for the first time and have not had much luck finding good documentation, do you know where I can find it? I have it working fine in my script but I would like to add a serial number after the bluetooth device name, I have tried as many of the logical naming conventions as I could think of but none have worked. Jun 22, 2002 · SerialBT에서 read()로 읽은 값은 char로 사용가능 문자가 도착하면, SerialBT. #define USE_PIN // Uncomment this to use PIN during pairing. When I'm using personal serial pin with SoftwareSerial mySerial(); , there is no problem, I receive the character. 8. I was able to fix the issue. h" void bluetoothPrintLine(String line) { unsigned l = line. Jan 11, 2018 · I have a bluetooth module on my PCB and up untill now I have communicated with it via a usb->serial converter. The Espressif BluetoothSerial Library simplifies working with the Bluetooth serial interface. I looked past the two lines which was silly of me. 2 を使いました。 Dec 27, 2023 · Bluetooth wireless technology has become ubiquitous in modern devices for short-range communication. このリファレンスは、Arduino core for the ESP32のライブラリリファレンスです。 全ての関数やメソッドを網羅しているわけではなく、スケッチ例などに出てくるものを中心に、選択したものです。 Feb 20, 2019 · In this tutorial we will learn how to detect the client connection event when using the Bluetooth Serial library of the Arduino core. My serial is generated in setup Feb 20, 2019 · In this tutorial we will check how to detect the client disconnection event when using the Bluetooth Serial library of the Arduino core, running on the ESP32. Firstly, I used text = SerialBT. This post will guide you through interfacing Bluetooth Classic with ESP32 to establish communication between the ESP32 and a Bluetooth-enabled device. The sensor readings are showing in the serial monitor, however, what's showing on my app are either @ or &. Serial. h> BluetoothSerial SerialBT; uint8_t cmd, cmdOld; bool animations = true; void setup() { Serial. No serial library was needed after all: for UART you should be able to use any available GPIO for RX and TX like this: May 10, 2019 · Then, create an instance of BluetoothSerial called SerialBT: BluetoothSerial SerialBT; setup() In the setup() initialize a serial communication at a baud rate of 115200. #include "BluetoothSerial. Jul 21, 2022 · こんにちは、ENGかぴです。 ESP32-WROOM-32EはWiFi通信とBluetooth通信ができるのが特徴です。Blutooth通信を手軽に行うことができるBluetoothSerialライブラリを実装してセンサー情報を無線通信して動作確認を行いました。 Jan 7, 2023 · Board ESP32 Dev Module Device Description Not relevant because not uploading - compile issue Hardware Configuration N/A Version v2. By going to the Bluetooth settings and Device Manager (on Windows 10 PC) you’ll get the COM port numbers of incoming and outgoing Bluetooth Connection. h and after changing the file name I had not restarted the IDE, so maybe some left over cache was causing the issue. end Sketch b About Bluetooth Serial Monitor App. Mar 9, 2018 · The objective of this post is to explain how to get started with the BluetoothSerial ESP32 library, in order to send data to a emulated Serial connection, operating over Bluetooth classic. The Bluetooth Serial Monitor App is a mobile app that has the User Interface that looks like the Serial Monitor of Arduino IDE. h> Creating Object of BluetoothSerial Library. h". read() 로 읽음 Aug 14, 2022 · こんにちは、ENGかぴです。 ESP32-WROOM-32EはWiFi通信とBluetooth通信ができるのが特徴です。親機と子機に分けたESP-WROOM-32EにBluetoothSerialライブラリを実装し子機のセンサー情報を親機に通信して動作確認を行いました。 Oct 16, 2018 · If the incoming data is ‘1’ then we turn on the LED and if it is ‘0’ we should turn off the LED. Serial. begin(String, bool)でBluetoothデバイスのローカルネームを登録し、 Bluetoothシリアルデバイスを開始します。 第一引数に設定した文字列がデバイス名として表示されます。デフォルト値ではESP32となります。 SerialBT. May 31, 2021 · I knew Bluetooth was sending some extra variables, but I didn't know how to detect and delete them. Viewed 70k times 7 When I am trying to compile the following Sep 23, 2021 · I am running into some problems finding a solution when it comes to performing some form of Bluetooth connection check for my project that will allow me to have a connection status light. readString()); String pass = SerialBT. begin(57600); while (!Serial) { ; // wait for serial port to connect. read(); } SerialBT. We will access the functionalities of two-way communication via this object. ----What I am trying to do is to use a HyperTerminal type program (since HyperTerminal doesn't seem to be part of Win7) to open the Bluetooth serial port (COM4) and connect to a serial remote system. Nov 5, 2020 · The . Is there a possibility for me to send without the null value? Or just dealing with the receiver's side of the message? //By Evandro Copercini - 2018 // //This example creates a bridge between Serial A simple Serial compatible library using ESP32 classical Bluetooth Serial Port Profile (SPP) Note: Since version 3. Estos comandos son solo el comienzo de las muchas posibilidades que existen con la comunicación serie a través de Bluetooth. h and BluetoothSerial. Now we are able to do more stuff on latest release . write()を使って、Bluetoothデバイスに送信します。 SerialBT. #endif BluetoothSerial SerialBT; void setup () { Serial. Feb 14, 2024 · Board ESP32 Dev Module Device Description DevKitC Hardware Configuration no Version latest development Release Candidate (RC-X) IDE Name Arduino IDE 1. Reload to refresh your session. md at master · don/BluetoothSerial Apr 26, 2021 · Dear maxgerthardt. h" and should be able to complie the code. The first board (with the module set up as master) is sending messages through BT. print("Received:");// write on BT app SerialBT. Jul 26, 2016 · What Does Bluetooth Universal Serial Bus Mean? Bluetooth universal serial bus (BT-USB) is a wireless USB adapter. At the time of writing, the mentioned library had just been added to the ESP32 Arduino core. Please run `make menuconfig` to and enable it #endif // Check Serial Port Profile #if !defined (CONFIG_BT_SPP_ENABLED) #error Serial Port Profile for Bluetooth is not available or not enabled. I want to check password before read command data. Using HyperTerminal on the COM port associated with the HC-05 and the Arduino serial console, I can send messages bidirectionally. Select allow when asked about turning on Bluetooth. May 14, 2024 · Then, create an instance of BluetoothSerial called SerialBT: BluetoothSerial SerialBT; setup() In the setup() initialize serial communication at a baud rate of 115200. Nov 11, 2015 · @QuestionMark Correct, you are. Modified 5 years, 10 months ago. ; txPin: the pin on which to transmit serial data. h" After that, we will need an object of class BluetoothSerial, which allows to initialize the ESP32 Bluetooth interface and establish the Serial over Bluetooth communication. read(); to detect extra char. available()は、Bluetoothデバイスから読み取り可能なバイト数(文字数)を取得する関数です。 はじめに . readString(). 1 out of 5 stars 14 2 offers from $5. h> #include <DallasTemperature. write(). Aug 22, 2013 · This code is working for me on an Arduino Mini Pro (should be the same as UNO) with an HC-05. 0 this library does not support legacy pairing (using fixed PIN consisting of 4 digits). But I have already found a solution. まずは、setupでデバイスに接続を行ってみます。 接続は、Bluetoothデバイスの名前、もしくはアドレスを直接指定して行います。 It is only available for the ESP32 chip. What is the actual behavior? error: 'BluetoothSerial' does not name a type BluetoothSerial SerialBT; Steps to reproduce. available always returns as 0. We begin our program by adding the header file BluetoothSerial which makes the ESP32 Bluetooth to work as Bluetoth SSP. I tried to locate the Feb 28, 2022 · Hello all, I am working with bluetoothserial. you're using find_service instead of discover, If i'm not mistaken that will give you a already connected device and the local port number used to access that device (for streaming Cordova (PhoneGap) Plugin for Serial Communication over Bluetooth - BluetoothSerial/README. end() : finaliza la instancia BluetoothSerial. println("Hello World"); Between each iteration of the main loop, we will do a small 1 second delay. Mar 25, 2024 · The ESP32 Microcontroller is a versatile tool for IoT projects, combining WiFi and Bluetooth in a single chip. h" //Header File for Serial Bluetooth, will be added by default into Arduino Apr 3, 2023 · The API documentation for the S3 is misleading: "ESP-IDF currently supports two host stacks. To get started with Bluetooth, you can try: Serial To Serial BT. h file as initially it was bluetoothserial. Aug 6, 2012 · My virtual com port "COM4" is already listed correctly: "COM4 - Outgoing - KOR_2_SPP slave" (KOR_2 is the name of the Bluetooth serial port. That is, sending strings from Processing to my Arduino Pro Mini over bluetooth using an HC-06 module and Software Serial. g. Is there any possability to reduce the memory Aug 31, 2014 · From the sample code . as a quick test create a function to read a byte. This includes the implementation of many useful functions that you’ll definitely need for creating projects with ESP32 Bluetooth. May 26, 2024 · ESP32 Bluetooth Serial Library. 環境ESP32はbluetooth付のコレ:waves NodeMCU-32… Jun 19, 2022 · ESP32-S3 is a different chip/SoC from ESP32. Go ahead and compile the code and upload it to ESP32 using the Arduino IDE. The next if statement checks if there’s any data available from the Bluetooth serial connection (like when a paired Bluetooth device sends some data). ino files, they get merged together before compilation. I suspect the issue was the spp_serial. Feb 2, 2022 · Hello @StefanL38. begin()は、シリアル通信の通信速度を指定します。 Estamos ya más que acostumbrados a usar Bluetooth con nuestros Arduinos. What I May 5, 2021 · I use ESP32 with BluetoothSerial for receive command from bluetooth. 6 IDE Name Arduino 2. Don't know what the issue was but after restarting the IDE the issue is fixed. Print the successful message on the Bluetooth serial monitor app about the data received by the Bluetooth serial port. h library it does not work, a light flashes all the time and in the console I get this error: Guru Meditation Error: Core 0 panic'ed (LoadProhibited). begin (device_name Feb 20, 2019 · In this tutorial we will learn how to detect the client connection event when using the Bluetooth Serial library of the Arduino core. h> SoftwareSerial mySerial(10, 11); // RX, TX void setup() { // Open serial communications and wait for port to open: Serial. Bluetooth Serial Adapter Hardware Interfaces Hardware Interface RN-240 RN-422 RN-270 RN-274 RN-220XP RS-232 RS-422 POWERING THE SERIAL ADAPTER The Bluetooth serial adapters are powered using either rechargeable batteries, an external power cable, or using pin 9 of a DB9 connector, depending on the adapter. ESP32 has support to Bluetooth Classic 4. Thanks for your efforts. SerialBT. On the menu bar, select Bluetooth Devices: Then select HC-05: Go back to the menu bar and select Terminal. println("The device started, now you Dec 8, 2020 · Is there a neat way of receiving a message string with the esp32 BluetoothSerial library just like Serial. // This example code is in the Public Domain (or CC0 licensed, at your option. write not working adding extra lines, If I remove some bluetoothPrintLine works when I try to add the 15th line program stop working #include "BluetoothSerial. 2 only works with the ESP32 chip. begin will crash if called again after BluetoothSerial. h" You signed in with another tab or window. begin(115200); Next we call the begin method of the BluetoothSerial object, to initialize the Bluetooth interface. ESP32もbluetooth接続デバイスをやるのも初めてなのでメモ. In this comprehensive guide, we will focus on configuring serial communication over classic Bluetooth to transmit data Jul 16, 2014 · error: redefinition of ' ' Ask Question Asked 10 years, 1 month ago. I have the HC-05 paired with my laptop. begin() に渡した文字列で検出されます。 !!もしプログラムを書き込めなくなったら!! Timed out waiting for packet header などのメッセージで新たにプログラムを書き込めなくなった場合はG0とGNDをジャンパピンなどで繋いで強制書き込みモードにして試してみて Dec 11, 2018 · After that, we will declare an object of class BluetoothSerial, which we will use to initialize the Bluetooth interface and to configure the event handling function. I'm using a bluetooth terminal on my smartphone to send some character that the arduino have to print on the terminal. print ("Received:");//print on serial monitor Serial. len Dec 2, 2021 · I want to connect an ESP32 to a SMA Sunny Boy SB5000-TL Solar convertor over Bluetooth, but I cannot establish a connection and I'm kind of stuck. 0. My current issue is that I need to do a lot of exclusions in my if´s and i dont know why #include <BluetoothSerial. Jan 2, 2020 · SerialBT. 59 Parameters. if you have multiple tabs with . En Prometec nos hemos hartado a hacer tutoriales sobre Bluetooth,usando un Arduino UNO o MEGA, con los buenos y viejos HC-06 y HC05 , los módulos más habituales de Bluetooth 2. BluetoothSerial SerialBT; the compilers says 51% of memory used. I use the internal bluetooth module of the ESP32. As a first step, I am simply trying to send some random data over bluetooth serial. Thanks for your repply!! I just copiled and it works! This is an example of log: [5/11 08:39:48. So I get "page1ok " instead of "page1ok". h" . Apr 15, 2020 · Hi, I'm working on a project where I need multiple libraries. The Bluedroid based stack (default) supports classic Bluetooth as well as Bluetooth Low Energy (Bluetooth LE). rxPin: the pin on which to receive serial data. Mar 13, 2018 · In this tutorial we will check how to receive data on a serial connection operating over Bluetooth classic. Feb 16, 2016 · Hello, I have some trouble using the serial1 to communicate with my bluetooth module. begin()は、シリアル通信の通信速度を指定します。. The tiny ESP32 microcontroller offers both WiFi and dual-mode Bluetooth support combined with ample processing power for Internet of Things and automation applications. serial but the other board (with the module set up as slave) never receives the message: Bt. Then, create an object named SerialBT of the BluetoothSerial library. The tests of this ESP32 tutorial were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 FireBeetle board. So, any data received from the Bluetooth device is forwarded to your Serial Monitor. Reset your Arduino. byte SerialBTread() { while (!SerialBT. I will show you the HC-05 pins and the descriptions in the table below: 関数解説 SerialBT. Without including BluetoothSerial and without creating an object #include "BluetoothSerial. begin(115200); SerialBT. If data is available, it is read using SerialBT. This means the bluetooth-object needs 45% of the whole memory. h file should contain the declaration of the class and this looks ok. Sep 4, 2022 · Arduinoのシリアルコンソールに入力があればデータを読み取り、SerialBT. Communications using Classic Bluetooth on the ESP32 use serial data. available() > 0) { // detect This profile defines the requirements for Bluetooth devices necessary for setting up emulated serial cable connections using RFCOMM between two peer devices. May 3, 2021 · Serial. 5]I (21347) SPP_ACCEPTOR_DEMO: ESP_SPP_DATA_IND_EVT len=6 handle=129 Thanks Chegewara, Now we have working pin key authentication in latest version of Arduino-Esp32. 0 en el mundo de Arduino y similares, porque al manejarse vía puerto serie podemos mandarles directamente los mensajes que deseábamos y los Nov 25, 2023 · An excellent app with a simple interface that I found to be very intuitive. Mar 9, 2020 · SerialBT. I currently don't have any BlueTooth devices near by (at worK) but I'd assume each object in devices would have a key called port. // and also demonstrate that SerialBT have the same functionalities of a normal Serial // Note: Pairing is authenticated automatically by this device #include "BluetoothSerial. Great to know. The . 04 にデータを送信してみました。 ESP32-WROOM-32E と M5StackCore2 で確認しました。 Ubuntu 24. cpp file. Dec 10, 2018 · #include "BluetoothSerial. begin (115200); SerialBT. May 20, 2022 · I have set up 2 arduino unos with HC-05 bluetooth modules with a simple circuit to get a button on one board to turn the other board's LED on. bnhbwe roteefa ylqlki gvxwz flssvo rum tzksc vsshdq xun qakwvr
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