Motorcycle Bluetooth hub: 5 pin DIN to Arduino to Cardo bluetooth headset

Projects General Guidance
1

Hi, I am new to Arduino and wondering if the following is possible...

  1. I have a motorcycle with a wired headset connection. It is a standard 5pin DIN connection and I have identified the pin layout to be 2 wires for Speaker L/R +, one for speaker -, one for MIC +, and one for MIC -

  2. I have a Cardo Packtalk Bold bluetooth headset in my helmet.

Can an arduino unit be configured to receive wired audio input from the motorcycle and transmit to the Cardo headset via bluetooth and simultaneously receive input from the Cardo headset's microphone via bluetooth and relay via wire into the bike?

2

Arduinos are digital controllers generally not suitable for audio.
Draw a logic block diagram. What bluetooth is comming from the motorcycle?

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4

I hope this chart makes sense. Will arduino be able to handle this type of data transmission?

6

I have been searching for duplex/two way bluetooth transceivers, but have only be able to find ones that work only one-way at a time. They have a physical switch to change between transmitting and receiving. Finding one that works both ways simultaneously have been difficult, hence the thought of creating my own with arduino.

8

I don't get what is the function in the box "Motorcycle 5 Pin DIN Cable"?
Connect Headset Mic to Mic + and -, SPK to Motorcycle Audio?

9

The idea for the Arduino would be a unifying single bluetooth connection vs having to pair the headset to a separate receiver and transmitter twice.

The Motorcycle 5 pin box is just an audio output source and input.

12

@Delta_G Thanks for finding that. That is exactly what I wanted. I have been looking in the wrong place I guess. And you are right, it is expensive.

14

I have an Arduino Nano it outputs a tone on D9 (this works i can hear it), pin 9 connects directly to a usb audio tx on one of the boards 3.5mm jack pins (pin D10 Connects to the other 3.5mm input pin), the usb is powerd 5v and GND , the TX board auto conects to bluetooyh headset but is very quiet i can bearly hear it.
I beleive the imput impedance of the usb TX board should be high so as to be just a voltage reader.

any ideas how to increase the volume?

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