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 toggle between two master device (Using UART)

we are currently using a BLE Tiny Circuit broad with UART codes. Is it possible to allow two master to connect to the circuit board and the circuit board will be able to transmit data to both ...
-1
votes
1answer
51 views

Arduino Nano 33 IOT - Bluetooth Classic (Serial)

I've an arduino nano 33 iot and I'm working with the first time with bluetooth. So far BLE is working fine, I can use an app on my smartphone to check the services and characteristics. Is it possible ...
0
votes
1answer
67 views

HC-05 connecting to Arduino

I have been looking through StackExchange, and searching on the web and cannot find an answer to my issue. Setup: Arduino Nano 168 HC-05 VERSION:3.0-20170601 I am trying to connect my Android phone ...
0
votes
0answers
30 views

HC-05 can not use lower pins only 8 and higher

#include <Arduino.h> #include <SoftwareSerial.h> char Incoming_value = 0; // SoftwareSerial BTSerial( 10, 11 ); // RX | TX + // SoftwareSerial BTSerial( 9, 10 ); // RX | TX + // ...
5
votes
2answers
2k views

Can an Arduino act as a GATT Server (Bluetooth LE)

I know it's pretty standard to set up an Arduino system as a BLE client, and use something like an app running on a smartphone as the GATT server, which receives the data and does something with it. ...
0
votes
0answers
14 views

Can the PN532 pull MAC address from Felica tags?

I'm trying to do an automatic pairing with Felica NFC tags but I need the MAC address because there is a certain order I would like sync up my device in order when I scan it to the NFC. To get it to ...
0
votes
4answers
8k views

How to solve problem AT+INQ ERROR (1F), AT+INIT ERROR(17) on Bluetooth Module HC-05?

i have problem with accessing at-command in module Bluetooh HC-05. i just follow all tutorial to activate at-command like this, http://www.martyncurrey.com/arduino-with-hc-05-bluetooth-module-in-...
0
votes
0answers
26 views

Please help! My Bluetooth Controlled Car Isn't working

I followed this tutorial: enter link description here I built it according to the schematic except I didn't connect an LED (I assume this isn't the problem). This is the schematic: I'm a beginner so ...
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....
0
votes
1answer
966 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
21 views

Help with turning LED on using smartphone with HC-05

I followed this tutorial: Remote Controlled LED using HC-05 I've assembled everything, uploaded the code and connected it with my phone. The code: /* Arduino Turn LED On/Off using Serial Commands ...
0
votes
0answers
9 views

communication between two HC 05 Bluetooth module

i am trying to transfer data between two HC-05 modules one is master and another is slave, slave is receiving data successfully but after sometime about 12-13 seconds it starts garbage values and ...
0
votes
0answers
10 views

Bluetooth module with HID and state

I'm looking for a bluetooth module that support HID and can send strings and "hex buttons" to a Win 10 computer. It also needs a state pin or have a library that knows if the module is connected to ...
-1
votes
1answer
52 views

Help with Bluetooth shield

Hey guys I have this Bluetooth shield Does anybody know how I can get it to connect to Arduino? I can't find any guides on it. I have this serial program that I want to use to turn on a led. but ...
1
vote
0answers
159 views

HC-05 Bluetooth fails AT+LINK

I'm trying to get a HC-05 connected as master to a Bluetooth ELM327 OBD scanner. The HC-05 is accepting AT commands, no problem. This is the sequence I use: AT+RMAAD (Clear any paired devices) AT+...
0
votes
1answer
159 views

Is it possible to use WiFi and Bluetooth / BLE in the same ESP32 project?

@Majenko's answer works like a charm. I did have to make some changes as follows: Per Majenko, you need to change the Tools > Partition scheme. I used "No OTA (Large APP) as he suggested and it is ...
0
votes
0answers
22 views

Lg g6 can't find Esp32 bluetooth

My lg g6 cant find esp32's bluetooth. Lg g6 bluetooth is fine as i can connect other devices Esp32's bluetooth is fine as i can connec from my samsung s9 to the esp32. Tried reseting and clearing ...
0
votes
2answers
872 views

Problem with hc-05 bluettoth module

I wrote a simple program for controlling an LED using mobile. So, I bought the HC-05 bluetooth module configured it and then connected it to the arduino. This is the code that I wrote for it. int ...
-1
votes
1answer
278 views

Install Bluetooth inside a home theater, How?

I have a 5.1 home theater(old one), I would like to transform it into a audio streaming system. I have a Arduino UNO and HC-05 Bluetooth Module, and I don't know how to install it in my home theater(...
0
votes
2answers
9k views

HC-05 Bluetooth Module - INQ-Command doesn't work

For a project I need to connect a Bluetooth Remote control with an Arduino Nano. The Problem I am trying to setup a connection to said Bluetooth remote Control. This device is visible! (I have ...
0
votes
1answer
42 views

Nothing gets sent to Arduino from Processing

I have a problem where I kwow that my bluetooth module (HC-05) is connected to a processing sketch, but nothing ever gets sent from the processing sketch,why? No error messages but the info never ...
0
votes
0answers
17 views

HM-10 doesn't responde after RENEW

Today I finally got two HM-10 modules. I did flash firmware using this tutorial. It worked until I didn't send AT+RENEW command. Now, LED blinks, I see device in BT terminal(Android phone) but I can't ...
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 ...
0
votes
2answers
6k views

HC-05 Bluetooth module doesn't read data correctly from my Android phone

I have made a home automation project where am using an Arduino Uno and HC-05 Bluetooth module and an Android app. I did everything properly but when I send commands from my Android app it works ...
0
votes
1answer
151 views

Arduino MKR 1010 WiFi as BLE central/client

I'm trying to use my new Arduino MKR 1010 WiFi as a Bluetooth Low Energy central/client, however I could only find information on how to use it as a peripheral/server (for example with the ArduinoBLE ...
1
vote
1answer
4k views

Arduino Bluetooth and Ultrasonic Distance Sensor (HC-SR04): printing values over BT gives error

I'm trying to send the reading distance of an HC-SR04 sensor to an Android app, using Bluetooth. I succesfully managed to send values from many other sensor to the app, but when it comes to sending ...
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
6answers
3k views

Problems with serial communication from Arduino to Bluetooth HC-05

I just purchased some HC-05 Bluetooth devices and I have followed the directions to put the devices in AT command mode by holding EN HIGH when the HC-05 powers up. When I do this the HC-05 goes into ...
1
vote
1answer
43 views

Convert Arduino MEGA Code to Arduino DUE Code?

I've been working with MEGA before. This code works completely with MEGA. I'm still at beginner level in Arduino. Q: How do I adapt this code to DUE? Note: I'm asking this question because I think ...
1
vote
2answers
9k views

HC-05 Bluetooth Module Blinking Red Light-Arduino Uno

I have looked on google for an answer to my problems to no avail. The you tube video I am following is here: https://www.youtube.com/watch?v=f1v0IMegCvU So basically on my android, I can't see the HC-...
0
votes
1answer
130 views

Sending Integer > 1 Byte from Android to Arduino over Serial

I´m using public abstract void write(int b) throws IOException; from class OutputStream on Android Studio to sent Integer (degrees from 0 to 360) to the Serial Port of my Arduino over HC06 ...
0
votes
3answers
528 views

Unable to get response for BLE AT commands in Arduino Uno

I am trying to establish connection between two BLE (BT43) through AT commands from an Arduino Uno. I am not getting any response from the AT commands. The connections are as follows: Arduino Tx --> ...
0
votes
1answer
993 views

Using BLE Nano with LSM9DS1

I'm trying to use the BLE Nano to connect to a LSM9DS1 IMU. However when I am able to connect to the IMU, the values the Nano outputs do not update and do not seem to make sense. I am able to ...
0
votes
1answer
46 views

My HC-05 Bluetooth Module is not working

I have been trying to use the HC-05 Module with my Arduino Uno to control a LED, which can be turned on and off by my phone. Everything is fine when i input the values from the serial monitor. The ...
1
vote
0answers
852 views

HC-05 and HC-06 Bluetooth not communicating well

I am trying to communicate between two Arduino UNO. One has a HC-05 which is configured as master, the other Arduino has HC-06 which is the slave. What I want to achieve is to be able to print a ...
0
votes
2answers
878 views

Arduino Bluetooth Range Control

I am creating a project that uses Bluetooth, But unfortunately it requires some kind of control of the range. I was thinking a potentiometer controlling the power going to the transmitters antenna. ...
1
vote
0answers
1k views

Arduino code issue (using Bluetooth and Rfid technology)

I am building a device that communicates with my Android phone. I know that my App works but my Arduino code seems to have a problem. So I have made a smaller programm and everything works fine there. ...
0
votes
1answer
32 views

'Delay command' and bluetooth communication problem

I have a project where I send data to Arduino via Bluetooth using an Android application. For example, when I press 1 from the 'bar led' part of the application, an animation needs to happen. When I ...
6
votes
5answers
31k views

Arduino Pro Micro, get data out of Tx pin?

I have a Sparkfun Arduino Pro Micro with an ATmega32u4 on it and a Roving Networks RN32 Bluetooth Module Theoretically, I should be able to solder the Rx of the Bluetooth to the Tx on the arduino and ...
1
vote
0answers
759 views

Serial Communication with two bluetooth modules on Arduino Mega

I'm trying to communicate with two bluetooth module (RN-42) on the Arduino Mega. I studied about Serial communication in Arduino, and I used Serial1, Serial2 to get information at the same time from ...
0
votes
1answer
88 views

Control speed of a dc motor with a 9v battery [closed]

Problem: I want to have a 9v battery that powers a dc motor. I want to control it with a bluetooth remote that has 3 buttons. 1st button is turn the motor with 1.5v, 2nd button is motor off and the ...
1
vote
1answer
985 views

How to connect mini jack output to arduino mini pro and send sound to it?

I would like to connect arduino mini pro to mini jack output and send sound through it. What would I need here, how can I connect the mini jack to arduino and how to send data of sounds (any library?)...
0
votes
0answers
23 views

How do I get my servo to turn using bluetooth, is this a glitch?

I'm very new to coding with arduino so please excuse my naivety, For an electronics assignment I am making a servo turn back and forth using a HM10 BLE however each time I press a button that sends '0'...
0
votes
1answer
624 views

Bluesmirf Mate Silver (RN-42) enter command mode when in HID mode

I am having problems getting the Bluesmirf Mate Silver (RN-42) into command mode once I have switched to HID mode. I have bought a second new Bluesmirf Mate Silver to confirm my issue. I soldered the ...
0
votes
1answer
566 views

Writing data from multiple sensors in burst mode to an Arduino Due

I need help developing a simple sketch that can read data simultaneously from 3 analog accelerometers and send it in 'burst mode' to be stored on an SD card, to reduce the effect of latency. I used ...
1
vote
1answer
454 views

Adafruit Feather 32u4 Bluefruit LE and HC-05 Bluetooth module

Is it possible to connect an Adafruit Feather 32u4 Bluefruit LE with an HC-05 Bluetooth module? I am making a heart rate monitor using an Adafruit Feather, but it is unable to send the data to ...
1
vote
0answers
106 views

Arduino not responding while trying to flash over BLE

I'm working on wireless uploader for Arduino from iOS devices. I'm using HM-10 BLE module which seems to work ok. PIO 2 is used as DTR for resetting (see A [0x41] T [0x54] + [0x2B] P [0x50] I [0x49] O ...
0
votes
0answers
19 views

Cannot make sense of values from Bluetooth HC-01

I have a simple script that listens on pin 0 for input, and if it gets anything, it Serial.prints it. But I cannot make sense of the results. I have a basic app that sends text over Bluetooth (in the ...
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
31 views

Adding bootloader to Feather M0 Bluefruit LE

I want to make a custom Feather M0 Bluefruit LE. I know this means that I will have to add a bootloader to the ATSAMD21G18. I have seen that there are many useful articles in relation to adding ...