Wednesday, October 17, 2018

Add Bluetooth connector between Nextion and Duplex hotspot

Purpose:
Use HC05 instead of USBtoTTL Serial port

Preview:



7 comments:

  1. So I have 2 pcs, HC05?
    and do I need some settings?

    ReplyDelete
    Replies
    1. Hi, 1x HC05 or HC06, act as Master model,
      1x HC02/05/06 act as slave mode,

      New update see http://mmdvm.bi7jta.org/search/label/Bluetooth_SettingGuide

      Delete
  2. You will need 2 pcs. One that connects to the MMDVM board that will send data. The other HC-05 (or HC-12) will connect to the display and will receive the data. Only 3 wire connection is needed for one way data transfer. The 4th wire is not used since there is no current two way application to do anything on the screen and have it change any function on the MMDVM. Please look at my blog where I first expimented with wireless display months ago. http://notebook.hvdn.org/2018/08/wireless-nextion-display-you-say.html

    ReplyDelete
  3. Will this work on a simplex board? I tried this with HC12s but no luck, the HC12s would burn out even after putting diodes in the port positive line. Is that some sort so Bluetooth adapter att ached to the mmdvm? Where are the output wires for the display placed on the mmdvm - on the GPIO headers, or elsewhere? Thanks!

    ReplyDelete
    Replies
    1. Yes, just replace serial port (wire),9600bps

      Delete
  4. Your information is vague. Does the HC-05 (Master) connect to the Nextion screen? Does the HC-05 (Slave) connect to the MMDVM? Specify your configuration.(or opposite) Did you have to use any diodes, resistors or special settings? Do both Bluetooth modules require the same baud rate? Can you use 115200?. I configured two HC-05 modules, ones as slave and one as master and made them connect to each other, but no information was shared between them. Although I was able to send text back and forth between two terminals on separate computers. I don't understand why it won't work. Please share your information in detail. Thank You!

    ReplyDelete

FTM-100D FTM350 #MMDVM DIAGRAM

  FTM-100D FTM350 #MMDVM https://www.bi7jta.org/wiki/index.php?title=Main_Page#FTM-100D.2FFTM-350