Hello.I couldn't find an appropriate section where to post this so sorry if i'm in a wrong place.I bought this bluetooth module:http://www.wide.hk/pdf/bluetooth_audio_2x.pdfhttp://www.wide.hk/pdf/BT_Stereo.pdfTo begin with anything, I just wanted to turn it on and see if my phone could find it. I connected pin 22 to ground and pin 27 to 3.3v.As I understood, i then have to connect pin 25 and ground for 2-3 seconds for the module to turn on. correct?I wasn't able to identify any device with my phone. If anyone has any experience with something like this I would really appreciate it.
yes. I didn't look carefully enough. I connected both LED's, GND and Vin pin.. also the button via 20k resistor. LED 0 (blue) blinks constantly, when I click the button (hold 2sec) then it turns off and LED 1(red) lights up for a few seconds and then they both turn off... probably this means the device is switched off. when I press the button again, blue LED starts blinking.still my phone does not find the device...edit: yes, all grounds are connected together
tried all of it, several times, in different order.. nothing changes.You would expect the support circuitry to be already premade for this chip. The actual bluetooth receiver/transmitter and audio encoder etc (chip 57F68, black rectangle in the middle of the module) does all the work, right?so it looks like they built this circuitry around it and some additional logic to control it.. But these are all the datasheets I could find for this module and they do not explain anything more.I don't believe that it's unable to make a connection because I haven't connected the output signal pins to the speakers/amp or the volume pins...what are the UART tx ja rx pins for?PS. instead of 20k resistor on the ON/OFF button, I used 2x 10k-s(5%). As far as I understand, it doesn't matter which way I use it.Tarvo
i did asked, couple of days ago. maybe they haven't replied due to weekend, we'll see tomorrow but I have a feeling i'm gonna have to buy a proper module not some weird chinese stuff.As far as I've had any contact with cheap chinese modules, devices, clones - I've never got them to work