Hi i not and expert i just started making small robots an i have a problem. I want to make a bluetooth controlled car using an arduino UNO booard , a L298N motor driver an HC-05 bluetooth modul. All was excellent until i tried to controll my car and noticed that it has very big delay while send info…

what do you mean by What i mean is that HC-05 connect to my phone and must blink two times in order to receive information also describe how you connect to your HC-05 from your phone

First of all i haven't used forum again and i don't know how to use it so if you could help me by publishing it i would appreciate it. I mean that the Bluetooth-module's red led blink two times and then start again to print information to the serial monitor . As a result i cant control my car immed…

dionisis05: First of all i haven't used forum again and i don't know how to use it so if you could help me by publishing it i would appreciate it. there are a few stickies post at the top of the forum exactly for this - titled conveniently as New General Guidance and How to use the Forum Usefu…

dionisis05: I mean that the Bluetooth-module's red led blink two times and then start again to print information to the serial monitor . No it doesn't. Bluetooth passes the message as soon as it is received. The blinking red LED is simply telling you it is connected and has no bearing on the pri…

Nick_Pyner: The default rate is rarely, if ever, 38400 I would not say "if ever" but you are right they actually usually default to 9600. I did not check and had a quick look at my archived ( spec of an HC-05 ) I bought a while back [HC05.png] Nick_Pyner: Your Arduino code looks kosher and s…

J-M-L: my archived spec of an HC-05 I bought a while back Far more important is the actual default rate of the device when it came out of the box, which you don't mention but might check, if possible. There has been a case before where the advised default was not the real default - just somethin…

Are you sure your expectations are correct for HC-05? I would try a loopback test, with a serial console on the phone, and see how long it takes for a character to round-trip. I suspect that bluetooth serial may just be too slow for a real-time control application.

Nick_Pyner: Far more important is the actual default rate of the device when it came out of the box, which you don't mention but might check, if possible. There has been a case before where the advised default was not the real default - just something written by a salesman, I guess. Perhaps it was…

Hello all, I have been using HC05 modules for at least 5 years. I've bought literally thousands of them for my hexapod project. And I can confirm that there is now a batch of "new" HC05 modules floating around on aliexpress that have this issue. These "new" modules can be identified because the two…

Delay with hc-05 communication

Projects Programming

Nick_Pyner January 11, 2020, 2:24pm 10

J-M-L:
my module was actually at 38400 when I got it.

Thanks. I have published a note on Bluetooth. I will edit it accordingly.

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Delay with hc-05 communication

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