Questions tagged [hc-05]
Refer to the HC-05 Bluetooth module.
170 questions
2 votes
1 answer
107 views
Stepper control using Pot over bluetooth (HC-05)
I have intermediate-level Arduino experience but it's been a few years... and, I would like to be more confident in a plan before ordering all the parts. So, basically, this is theoretical. The design ...
- 29
1 vote
0 answers
69 views
The character received by the HC05 is not what was expected
I'm trying to connect the HC05 device to my Arduino. I can connect to my Android device without a problem, and every time I send a character, the information is sent, but I can't process it in the ...
- 11
0 votes
1 answer
993 views
Control esp32 via keyboard keys
I'm making a project in which I have to control a mini car and get sensor information via bluetooth. I'd like to be able to control the mini car with the computers keyboard (w,a,s,d), but I was not ...
- 31
4 votes
1 answer
697 views
Problem with reading data from ELM327
The idea was to create a bluetooth device on the arduino to read data from the machine (ELM327 v2.1) using the HC-05 bluetooth module. In this code the bluetooth module is switched to MASTER mode and ...
- 141
2 votes
1 answer
306 views
How do I make the Arduino print on my Mac's Arduino IDE through Bluetooth?
This is a basic question, but I really have tried my best to find a solution on the internet to no avail. I have a fairly normal setup. HC05 module connected to an Arduino. The HC05 is also connected ...
- 131
0 votes
0 answers
143 views
HC-05 Disconnects Underwater(predictably). How to make it reconnect by itself?
So I have an application where I send a Bluetooth module underwater(in a waterproof case). I have the Arduino+module sending my computer on-land a constant stream of numbers. Predictably, when the ...
- 131
3 votes
0 answers
437 views
HC05 and ELM327 NODATA sending PID codes
I am working on a project where I am using an HC05 connected to an Arduino to connect to an ELM327 Bluetooth scanner. I am using the SoftwareSerial Arduino library to send and read information from ...
1 vote
0 answers
208 views
Communication between two hc 05 Bluetooth modules not working
I Have a problem with the connection between two hc 05 modules. The bluetooth modules are paired using AT commands. But when I run the code I cant get any data from the reciever. The bluetooth modules ...
1 vote
1 answer
4k views
Arduino + HC-05 Problem: AT Commands are not working
Device: Laptop, HC-05, Resistor 2.2k and 4.7k, Arduino Uno R3 So im trying to rename and change password of my HC-05. for full detail schematic diagram. Here(the difference is, i also used the STATE ...
- 81
-1 votes
1 answer
151 views
Constantly Stream data vía Bluetooth to monitoring
I am using a Bluetooth module HC-05 to Stream data from Arduino to My computer. In they computer I am using a python script to receive They specifications: Baud rate: 9600 But I am getting an error. ...
-1 votes
1 answer
58 views
Servo retaining its position every time I send some value
I wanted to control my servo with a Bluetooth module. I gave certain values for rotating it. When I press those values the servo rotates, but then retains its original position and the PC also makes ...
- 31
0 votes
0 answers
77 views
Can't pair two HC-05 (Master - Slave)
I want to connect two HC-05 modules, one master and one slave. So to that I need to access 'AT Commands'. Theoretically, I just needed to upload an empty code, and then connect the module to the ...
- 1
2 votes
1 answer
714 views
HC-05 Bluetooth module; two serial ports, COM4 and COM5
I'm learning how to use the Arduino HC-05 Bluetooth module. After pairing to it with my laptop I saw that I was getting two serial links, COM4 and COM5, as can be seen from the picture below. On COM4 ...
- 21
1 vote
0 answers
150 views
Bluetooth Upload is Hanging
I am trying to program my Arduino via bluetooth and have been following this tutorial very closely in order to do so: https://www.instructables.com/Program-an-Arduino-Wireless-Over-Bluetooth/ I have ...
- 21
1 vote
1 answer
245 views
ESP8266 with HC05 : expecting to receive more bytes then the 63 received
I'm trying to read a Ant BMS 32H with a ESP8266 and a HC05 module. BMS is sending 146 bytes when asking for these by sending DB DB 0 0 0 0 (HEX) I did test with my android phone and the app 'Serial ...
- 11