Blue Dmod

Notice: While assembling the PCB few faults were discovered, Old PCB is scraped. New design will be posted soon. I’m still learning PCB design. Apologies for delay.

A Bluetooth audio interface for Ham radio Digital modes like FT8, SSTV, RTTY and more. A DIY Kit with lots of customization options. Choose your own 5VDC power, I/O connectors.

How it Works:

Simply pair Blue Dmod with PC/Tablet or Smart phone. Connect the radio with I/O connector.

Blue Dmod have built in VOX PTT and will trigger PTT when audio from PC/Tablet or Smart Phone is transmitted. Blue Dmod is completely Open source and can be modified according to your needs. Please keep in mind that this is not TNC so wont do Packet data.

As its open Source project I won’t be selling it, all files are available to download form Git hub page or Hack A Day. Use Gerber file to order the PCB, use Arduino files to program the Pro Micro. Make your own Custom enclosure  with total freedom.

Circuit Diagram:

Do not use, Read the notice above.

Simple explanation:

Right Audio goes to the radio.

Left audio goes to Pro Micro to trigger PTT.

Audio form Radio goes to Bluetooth Mic.

Wiring Diagram:

Do not use, Read notice above.

Pro Micro Programming:

There are 2 Arduino IDE files: You can choose any of the code if you would like to potentiometer then use “BlueDmod-1.1_rev1.2_POT”. If you do not want to use potentiometer then use “BlueDmod-1.1_rev1.2_non_POT” a default delay of 1000ms is implemented.

PCB:

PCB size is 55mmX60mm.

To be update

Files:

73’s

2E0UMR