can't get Amarino "TEST" LED to blink!!??

Projects Programming
1

I'm relatively new to Arduino and very new to Android. I've been
trying to use the Amarino toolkit to establish bluetooth communication between them, but can't
get an LED to blink using the MeetArduino "Test sketch here" - http://www.amarino-toolkit.net/index.php/getting-started.html

I'm using the BT module here - http://www.ebay.com/itm/160701028772?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2648. I'm able to connect easily with
my HTC Droid Incredible 2 phone, but there seems to be no
communication between the bluetooth module and Arduino UNO!!??!!

What I've tried...

  1. changing baud rate (tried ALL rates). Made sure to alter sketch to
    match module.
  2. different versions of Arduino IDE (1.0 and 0022)
  3. changing COM port designation of BT module (bit confused here...one
    tutorial I came across indicated BT modem must be on same port as
    Arduino, but as I understand it, only one device can have access to a
    port at any given time??)
  4. after loading Arduino sketch, disconnected board from computer and
    powered from external DC source.
  5. double and triple checking that wiring is correct, i.e. tx--rx; rx--
    tx, vcc, grd (also tried with and without jumper between outermost
    pins ('KEY' and 'STATE') of BT module...this has me a bit confused also -
    some tutorials show this connection as necessary, others don't give it
    a mention??
  6. altering the delay rate in the sketch

I'm sure it's something simple that I'm missing...frustrating!!!

Thanks you in advance for your help!!!!

2

I already posted this query on an Amarino-specific forum but with so few members, the going is understandably slow.

Any ideas from the Arduino community??

3

Hi
Sounds a bit wierd...

When you sending commands from your phone, do the rx-tx leds blink? On the Arduino or the bt module?

4

RX and TX do not blink on either the Arduino or the BT module.

According to the tutorial on the site (which I added a link to in my original post) everything is operating as it should except for the blinking LED controlled by the Arduino sketch.

5

Does your BT modules's pairing LED indicate that they are paired?

I.e. when the LED is first on, its blinking then it goes solid on after pairing?

Have you run the Amarino app and clicked connect?

6

What does the 'monitoring' button show you?

7

dxw00d:
What does the 'monitoring' button show you?

it shows this (scrolling list as random numbers generated and sent)......

AmarinoService: message to send: 56
AmarinoService: send to Arduino: A56?
AmarinoService: message to send: 102
AmarinoService: send to Arduino: A102?

8

If you aren't getting any return from the Arduino, and the RX/TX indicators on your BT module and Arduino aren't flashing, then you haven't got a connection between the phone and the BT module.

9

I was assuming I did because upon hitting the 'connect' button on the Amarino app, the BT module will go from blinking red to steady red while the app indicates a successful connection at the same time.

Is the another way to check this?

10

Si:
Does your BT modules's pairing LED indicate that they are paired?

I.e. when the LED is first on, its blinking then it goes solid on after pairing?

Have you run the Amarino app and clicked connect?

Yes to all.

11

same problem here, frustrating like hell. I get the same response upon seeing the monitoring screen

AmarinoService: message to send: 56
AmarinoService: send to Arduino: A56?
AmarinoService: message to send: 102
AmarinoService: send to Arduino: A102?
(with question mark in that squares).

it happens like that when the android and bt module are connected and it is like this when I turned the bt module off:

AmarinoService: message to send: 56
AmarinoService: message to send: 102

meaning it does do something when the bt module was on.

anyone has an idea of whats goin on, would be much apreciated.

12

I changed the baudrate into 9600 and worked now. I tjink one has to try the multiply of 9600 until it reaches 150k. different version or date of atmega come with different baudrate. I thought mine was at 57600, I insisted, and failed. then I started from 9600 and up, but ended up getting a success at 9600, first try and success. hope this help, man