Two problems with Bluesmirf Mate Silver and Arduino Mini Pro 3.3v

Projects Networking, Protocols, and Devices
1

Let me know if I should make two posts...

  1. I'm using the Bluetooth tutorial passthrough code on an Arduino and a
    Bluesmift Mate Silver using the SoftwareSerial libraries and TX/RX on pins
    D8&D9. On an Arduino Uno things work great. On an Arduino Mini Pro 3.3v
    system, I'm getting nuttin (running the same sketch). Any reason an
    Arduino Mini Pro 3.3V wouldn't/couldn't be driving the Bluesmirf?

  2. My target application is a count-down timer, with some piezo buzzers
    using the 'tone/noTone' and 'delay' functions. The count-down timer is using
    Timer1, and overflows (calls ISR) @ 1hz. I'm outputting seconds
    remaining till 'event end' via SoftwareSerial through the Bluesmirf. During
    those brief times that I'm using 'tone()', 'noTone()' and 'delay()' functions I
    get some garbage in the bluetooth stream. The time it takes those tone/noTone/
    delay functions to complete is .5~4.0 seconds but the ISR continues to run @
    1hz (I have a blinky-LED). Any suggestions of how better do things (or debug
    what's going on)?

Thanks!

-U4-

2

Did you ever figure out why the BT would not work on the 3.3V Arduino Pro? I'm having the same issue. I have a 5V pro and it works fine but when I compile the same sketch for the 3.3 the BT will not respond.

My setup is very simple. I'm using SoftwareSerial to create a serial connection on pins 2/3. Then I'm giving power and ground to the BT. The 5V Pro setup works fine but the 3.3V Pro setup will not talk back. I even made sure that the "line ends" were functioning correctly.

Joe

3

Sorry.... I never got to the bottom of it: I bailed and ordered/started using 5V
mini's.