CODEWITHSUNDEEP
androidbluetootharduinoroboticsarduino-ide
Rishi Swethan
Rishi Swethan

Reputation: 67

How to increase the speed of transfer of data from android to arduino in bluetooth?

I'm trying to use an android app to do the processing of a path finding algorithm for a robot using Bluetooth. But currently, it takes 1 or 2 seconds for the transfer to complete, so that there is an output in the Arduino. Is there a way to minimise this to make the transfer-output instant?

This kind of delay is causing problems such as stopping instantly when an obstacle is detected. Is there any better way of doing this? Thanks in advance!

Upvotes: 0

Views: 1832

Answers (3)

Rishi Swethan
Rishi Swethan

Reputation: 67

Two simple solutions worked for me:-

  1. Increase the delay to 50 - 100 milliseconds.

  2. Add this after the Serial.begin(9600) in setup();

    Serial.setTimeout(50);

Step two is the most important. It worked for me only after I added the above code. This is not mentioned very often in many other forums that I have looked when I had the exact same problem.

Upvotes: 0

Nithin P
Nithin P

Reputation: 531

You didn't mention which device you are using. I assume that you connected the Bluetooth chip set to UART port(As in arduino Uno), In that case the slowest part in whole communication is the serial interface between Arduino and Bluetooth chip set. Check what baud rate you are using and can it increase further. I think default will be 9600 which is only around 960 bytes per second. Set the maximum baud rate supported by your device and the Bluetooth chip.

Upvotes: 1

Paul Isaac
Paul Isaac

Reputation: 84

Simple answer: You can't, bluetooth is laggy like that. If you instead had your path finding algorithm on the arduino board itself, you could avoid the issue. You can also try adding a delay to your arduino code, because it is possible that the arduino is sending messages repeatedly without taking into account the lag that bluetooth has.

Upvotes: 0

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