We’re rewarding the question askers & reputations are being recalculated! Read more.

Questions tagged [bluetooth]

Bluetooth enables short-range wireless communication between devices.

Filter by
Sorted by
Tagged with
0
votes
0answers
14 views

Bluetooth not Transmitting over HC05 Master Slave Setup [duplicate]

I am trying to control a robot, where I have one HC05 module as a master connected to an Arduino Uno with an attached joystick. This Arduino sends data signals that will run blocks of code on the ...
0
votes
0answers
44 views

Arduino Bluetooth to Control Joystick Issue

I am trying to control a robot, where I have one HC05 module as a master connected to an Arduino Uno with an attached joystick. This Arduino sends data signals that will run blocks of code on the ...
0
votes
0answers
21 views

ZS-040 Bluetooth module is undiscoverable

My bluetooth module is connected to arduino nano using voltage delimiter (to get 3.3V) exactly as its said in this article. I connected it to my phone and was able to communicate with it through ...
0
votes
0answers
132 views

How can I send AT commands to HM-10 module from my android phone?

Earlier today, I was able to connect flawlessly to my HM-10 module via the Arduino serial monitor. I think I then changed some settings without thinking and now I can no longer connect to it. No ...
0
votes
0answers
155 views

UUID for ESP32's BluetoothSerial

I have a program that interfaces with my ESP32 Thing via BluetoothSerial. It needs the address and a UUID to connect. (I was previously using a different chip without onboard Bluetooth, so I was ...
1
vote
3answers
178 views

Unable to store data in variable from Serial.read()

I have a relay and bluetooth module connected to Arduino Uno. I send data such as digit 1 to the bluetooth module and I view it in the Serial Monitor. If I send 1 from serial monitor I get 4910 ...
0
votes
0answers
221 views

Bluetooth gamepad via Adafruit Feather M0 Bluefruit BLE

I'm trying to build a Bluetooth-enabled gamepad out of an old Playstation 1 controller, using an Adafruit Feather M0 Bluefruit BLE. I've programmed the board as a Keyboard HID and everything works: ...
1
vote
1answer
37 views

Where can I find the source codes for the various classes and methods used in Arduino Primo?

I am new to Arduino development. I am trying to connect a BLE device (Arduino Primo) with my iOS app. From the Arduino BLE examples, I understand how to initialize the BLEperipheral class and then ...
0
votes
0answers
61 views

BLUNO Beetle V1.1 BLE seems defective, Bluno Beetle V1.0 works fine

I have previously had the Bluno beetle V1.0 before which works fine. I have just bought 3 Bluno Beetle V1.1 mc's, but the BLE is not discoverable. I have gone through the same process to update the ...
0
votes
1answer
51 views

Looking for a cheap small arduino ish board [closed]

I'm looking for a cheap and small bluetooth board for a project. I found this one, but I find this one too expensive, are there cheaper alternatives, in similar size? Thank you!
0
votes
1answer
24 views

Need help combining two sketches (HC05 and temperature)

I have a project where I have to combine 4 sensors and get data wireless via Bluetooth (HC05). I just want help with combining just 1 sensor sketch and the Bluetooth sketch. I want the data from the ...
0
votes
0answers
636 views

Help with sending data to MIT app inventor through bluetooth

I'm trying to connect my arduino bluetooth sensor to an MIT App Inventor app I made, and in doing so display the readings of two of my sensors. Whenever I test the sensors in the serial monitor, I get ...
0
votes
1answer
141 views

HC-05 bluetooth module

I was able to connect my HC-05, pair it with my phone, and I can see data in the Serial Bluetooth Terminal Android App. But when I try to connect it to a certain application it says it cannot find it....
0
votes
2answers
216 views

Is it possible to connect miband2 and arduino nano (?)

I want to make an IOT project using an Arduino nano and I need heart rate sensors. I I have a miband2. So, is it possible to connect them ?
0
votes
1answer
253 views

Can an Arduino (Leonardo) be recognized via Bluetooth as a mouse/keyboard?

I'm new to wireless communication on Arduinos and doing research for a project. I'm looking at the Arduino Leonardo (which is like the Uno) which via its micro USB port can be automatically recognized ...
1
vote
0answers
78 views

Can I configure pairing for HC-05 and Arduino, and use the HC-05 without Arduino after?

I have a system that is outputting data via its serial, and I need to relay that data to my PC wireless-ly. If I were to setup an Arduino and HC-05 at the system's side to relay the data, that would ...
0
votes
1answer
745 views

Transmit/Receive data Nodemcu(V3) + Bluetooth Module HC-05

I am trying to communicate with the HC-05 Bluetooth module for quite long time now, but with no success. I am using the Nodemcu(V3) ESP8266 module. I connect the HC-05 to Nodemcu in following ...
1
vote
1answer
293 views

Does baud rate for HC-05 Bluetooth module need to match the Serial Monitor?

I have this sketch that I got as a sample. I have the two HC-05s connected. What I type in one serial monitor shows up on the other, but as question marks. The most common reason for this I find is ...
0
votes
1answer
77 views

Replace mechanical switch with electrical switch or relay

I have a remote controller for a portable heater, and working on a small project to be able to control the fan on/off from an arduino with Bluetooh HM-10 module. I thought a solenoid might work by ...
0
votes
0answers
58 views

How to remove or only show part of the data received?

I'm using the ble_client.ino example and I can't figure out how to only show some of the notifyCallback data. I'm getting three different types of data from one service UUID. static void ...
0
votes
0answers
238 views

HC-05 sending data to Android a value but it cracked out of its form

I am totally beginner but I am trying to finish my project as school work :-( but from the beginning, I am really stuck. Could anyone help me out? #include <SoftwareSerial.h> SoftwareSerial ...
0
votes
1answer
964 views

Badly formatted characters using JDY-30 bluetooth module

I have a JDY-30 bluetooth module and have it wired like this (except using an Arduino Uno): It is working, but I need to use it with a 115200 baud rate instead of the default one of 9600. I also got ...
0
votes
0answers
59 views

Having trouble using HM-10 with my arduino

I am using the HM-10 bluetooth module with an Arduino Uno. I am able to connect HM-10 to my phone just fine using the app lightblue. My issue is that I cannot use AT commands and by that I mean ...
0
votes
1answer
169 views

Serial.write printing blank values

I've got an Adafruit Bluefruit NRF52 hooked up to the Adafruit BNO055 9-axis orientation sensor, but when I use Serial.write to send the data, serial monitor displays blank values only. The scroll bar ...
0
votes
1answer
171 views

RN4678 Bluetooth doesn't respond

I am facing very basic level issue with RN4678. I purchased a module from https://www.mikroe.com/rn4678-click I want to simply communicate with it through serial port. To do that I connected it to ...
0
votes
0answers
23 views

Checking/accessing Serial prevents clean upload of sketch via bluetooth?

I'm deploying some DIY home automation devices, built around a 3.3v pro mini, a HC-10 module, and a relay board. The arduino is able to be programmed over the bluetooth module, so once it's in the ...
0
votes
0answers
114 views

Problem in the library blynk

there was a problem loading the sketch, writing that the BlynkSimpleSerial.h library is missing. I tried to find on the Internet I did not tell me how to fix this error. #include <SoftwareSerial....
0
votes
1answer
359 views

How to send big data (long string) from PC to Arduino using Bluetooth

One of the requirements of my projects is to send data from my application to the Arduino robot. I have windows 10, and my robot is Arduino Uno. The Bluetooth I'm using on my robot is HC-06. The app ...
2
votes
1answer
83 views

Digital Input using a button doesn't work properly when using it to control a relay

I'm trying to control a relay both via Bluetooth and using a switch. The problem is that, when the LED is off, I can turn it on with the switch but then if I turn off the switch the relay will stay on....
-1
votes
2answers
176 views

Distance measuring utilizing (1 or 2) Arduino Nano's

I would like to develop a small-distance measuring device that will be primarily used in indoor scenarios to measure a distance with cm accuracy (mm if possible). The device would be in a small form ...
0
votes
1answer
43 views

Is it possible to combine a HC-05 Bluetooth module and a shrinked arduino ATtiny45/85 to control a motor, LEDs, or other components? [closed]

I'm thinking of making a tiny RC toy project that is controlled through Bluetooth with most components at its tiniest size. I'm a complete beginner in this area so i'm not completely familiar with ...
0
votes
0answers
214 views

Convert normal keyboard into Bluetooth Keyboard

I am very new to the Arduino world, I am trying to convert my wired keyboard into a bluetooth keyboard. I have a few layman questions: Is it possible to add an audio jack adapter(like PS4 joystick ...
0
votes
1answer
155 views

mySerial.available() is returning 0

I am using bluetooth hc-05, arduino uno and ap app created by mit app inventor.The problem is myserial.available is returning 0 and hence its loop is not getting executed. I had connected four pins of ...
0
votes
1answer
124 views

Connect a button to bluetooth board and comunicate with Android

I want to create a small device, just a button that sends its status to an Android application through Bluetooth. I bought a Bluno Beetle, but the information it exposes to Bluetooth cannot be ...
0
votes
1answer
110 views

NRF51822 ± Arduino Uno / ATmegaXXX?

Hello I want to make a simple home automation project and I'd like to use an arduino uno for prototyping and later a atmega for deployment. I need some sort of a mesh communication method. I was ...
0
votes
1answer
51 views

Can I make the BT module disconnect with a BT module and connect with another in the code?

I am working on a project that requires a connection between two BT modules (HC-05) and a mobile phone. Later on, I encountered a problem: I can't connect two BT modules to one at the same time, So I ...
0
votes
1answer
45 views

Sketch talks to Android via BLE on Serial2 but times out after 5 seconds when Serial cable disconnected or not present

From an Android phone I am using the "Serial Bluetooth Terminal" app to communicate to an Arduino Mega 2560 with a Bluetooth Low Energy HM10 (Jaycar XC-4382) module connected via Serial2. If the ...
0
votes
3answers
631 views

I can send on software serial, but not read?

I've been cracking my head over this for a long while. Like many before me, I'm trying to send and receive data from a HM-10 bluetooth module, arduino mega adk and the app called BLE Scanner. I've ...
1
vote
0answers
217 views

SerialBT.begin(“name”) now causes brownout in ESP32

I'm attempting to run the example sketch SerialToSerialBT.ino. It's a pretty commonly used sketch. I successfully loaded it on one of my ESP32 chips last week, and was able to use a tablet serial ...
1
vote
0answers
445 views

Is there a module that will allow me to pair a bluetooth keyboard to an arduino?

I want to pair a bluetooth keyboard to an arduino project, so that pressing a key on the keyboard causes an action to happen on the Arduino. Let's say that pressing Q on the keyboard makes an LED turn ...
-1
votes
2answers
145 views

Arduino - expression cannot be use as function :( [closed]

Sketch: //XPERT MIND. //This program is used to control a robot using a app that communicates with Arduino through a bluetooth module. //Error Code Chart: Code 01; Turnradius is higher than Speed; ...
0
votes
1answer
713 views

Bluetooth OBD2 ELM327 connectivity issues

I made a little project using an Arduino UNO, a 3.5" display, a HC-05 bluetooth module and an ELM327 (cheap ebay clone). I managed to establish communication, read the data, interpret and display it, ...
0
votes
1answer
384 views

Problem Uploading to the Arduino Nano board [duplicate]

]2I am using an Arduino Nano board. It has an ATmega 328P processor. For running the codes I use Arduino 1.8.6 Software. The issue is that when I am uploading my sketch to the board it shows me the ...
0
votes
1answer
71 views

Is two modules using Serial Interface on one Arduino Uno possible?

I was wondering if I have both a Bluetooth HC-05 module and a GPS module (uBlox 7N) is it possible both for both to be using the serial interface? I'm aware they cant be operating simultaneously ...
1
vote
0answers
81 views

HC-05 and cheap Nano clone not powering on

I have a HC-05 module which works absolutely fine with an Arduino Uno. Because I need to reduce the size of it, I tried using an Arduino Nano. After correctly wiring it up to the Nano, sometimes the ...
-1
votes
2answers
138 views

Two HC05 Bluetooth Bind problem

I succeeded in giving an AT command. My two BL MAC addresses are 21, 13, A03B and 21, 13, A3E2. When I want to connect one to the other I use AT+BIND=21,13,A3E2. But then I see Error(7). If I use ...
3
votes
4answers
190 views

Can you help me trim my code?

First of all I want to be clear, I'm not very skilled in programming methods, all the C I learned was for various Arduino projects. That being said, I just finished a project that reads some data ...
1
vote
1answer
63 views

Problems improving the inquiry speed of Bluetooth HC-05

I'm buiding a project with the Arduino and Bluetooth HC-05 module that receives the MACs of Bluetooth devices around (does not connect, just inquiry). It works, but I want a better performance in ...
0
votes
0answers
212 views

Sending accelerometer data using BLE to a Cordova phone app

I'm working on a simple project, that involves an Arduino sending accelerometer data to a Cordova-based phone app using BLE. I've got my Arduino wired up correctly, I think - I can see the data in ...
-1
votes
1answer
110 views

HC-05 modules with joystick driven platform [closed]

I am working to create a joystick controlled platform using bluetooth to communicate, but am having several problems. The platform https://www.dfrobot.com/wiki/index.php/Cherokey_4WD_Mobile_Platform_(...