Difference between revisions of "NexDeck"

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m (Parts List: Added audio switch/fm receiver link)
(Double DIN Unit: add estimated work required)
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* Can use the OBD2 integration with a WiFi/BT camera for backup cam
 
* Can use the OBD2 integration with a WiFi/BT camera for backup cam
 
* Google maps on your dash!
 
* Google maps on your dash!
 +
 +
===Parts List===
 +
* Double DIN mounting hardware
 +
* Nexus 7 or other tablet supporting USB OTG/Host
 +
* Wired MIC for HFP
 +
* Microcontroller (connected via USB, ADK-compatible)
 +
* SPI/I2C/UART controlled stereo audio switch
 +
* SPI/I2C/UART controlled FM receiver
 +
* USB hub
 +
* USB extension cable (for front panel access)
 +
* 4-6 channel output stereo audio amplifier
 +
* Tablet mounting hardware
 +
* Tablet wireless or USB charging hardware
 +
* Power conversion hardware for embedded devices
 +
 +
===Work Required===
 +
* Retrofitting the tablet into the mount
 +
* Getting the tablet OS into shape for talking to USB devices
 +
** Might need a custom OS with a special kernel
 +
* Writing Android app for control/orchestration of the USB devices
 +
* Getting BT audio sink mode working
 +
** This is a BIIIIG IF, otherwise use the same BT device as with the single DIN setup
 +
* Get power hooked up to everything
 +
* Get the microcontroller software talking to the tablet via ADK
 +
* Get the microcontroller wired into the BT device if applicable
 +
** needs to be able to put it in pairing mode if it doesn't go there automatically
 +
** only matters if BT sink mode isn't going to happen
 +
* Get the front controls wired into the microcontroller (BT device if applicable)
 +
* Get the microcontroller talking to and controlling the audio switch
 +
* Get the microcontroller talking to the AMP
 +
* Get the microcontroller talking to the FM receiver (optional)
  
 
===Pros===
 
===Pros===

Revision as of 21:01, 10 March 2014

Creator:
opticron
Status:
Research
Born On:
19:55, 10 March 2014 (CDT)
Last Updated:
21:01, 10 March 2014 (CDT)

Overview

This project encompasses single and double DIN stereo decks meant to interface with a smart phone and provide a customizable experience tailored to the wants or needs of the user.

Single DIN Unit

This unit utilizes tight integration with the smart phone to deliver audio and other services.

Features

  • Uses wireless charging to keep your phone topped up while being used as your headunit (no cables!)
  • FM reception using the vehicle's antenna (via BT or via microcontroller via BT)
  • Hands free calling operation via BT
  • Audio playback/control via BT
  • Auxiliary headphone jack or RCA input
  • Jog knob for volume
  • Dual momentary toggle switch for next/previous
  • Can integrate with a BT OBD2 reader for displaying car info
  • Can use the OBD2 integration with a WiFi/BT camera for backup cam
  • Google maps on your dash!

Parts List

  • Single DIN mounting hardware
  • BT A2DP/AVRCP/HFP receiver with custom wiring for the jog knob and toggle interface
  • Wired MIC for HFP
  • Microcontroller
  • BT module for microcontroller (RFCOMM connection only)
  • SPI/I2C/UART controlled stereo audio switch(Possible Solution)
  • SPI/I2C/UART controlled FM receiver(Possible Solution)
  • 4-6 channel output stereo audio amplifier
  • Phone mount/charging hardware
    • Air Dock recommended for qi-compatible devices

Pros

  • Lower cost
  • Wider options for devices
  • Smaller footprint
  • More space for controls

Cons

  • No dedicated device/requires that the phone come out of your pocket
  • Storage restricted to on-phone
  • Requires phone/tablet at all times to work
    • May be possible to do dumb aux passthrough by default
  • Requires tight integration with the device (custom apps at the least)
  • Smaller screen for less mapping awesomeness
  • Lower quality audio for HQ sources

Double DIN Unit

This unit utilizes a much more loose integration with the smart phone and uses only standard interfaces to communicate with it.

Key Features

  • Uses wireless charging to keep the tablet topped up, tablet is necessarily integrated into the dash
  • FM reception using the vehicle's antenna (via USB or via microcontroller via USB)
  • Capable of reading USB storage peripherals
  • Hands free calling operation via BT
  • Audio playback/track information/control via BT
    • AVRCP1.5 features like browsing would be nice, but probably limited to 1.4/tag info for now
  • Auxiliary headphone jack or RCA input
  • Jog knob for volume (is there space for this?)
  • Dual momentary toggle for next/previous and FF/RWND (is there space for this?)
  • Can integrate with a BT OBD2 reader for displaying car info
  • Can use the OBD2 integration with a WiFi/BT camera for backup cam
  • Google maps on your dash!

Parts List

  • Double DIN mounting hardware
  • Nexus 7 or other tablet supporting USB OTG/Host
  • Wired MIC for HFP
  • Microcontroller (connected via USB, ADK-compatible)
  • SPI/I2C/UART controlled stereo audio switch
  • SPI/I2C/UART controlled FM receiver
  • USB hub
  • USB extension cable (for front panel access)
  • 4-6 channel output stereo audio amplifier
  • Tablet mounting hardware
  • Tablet wireless or USB charging hardware
  • Power conversion hardware for embedded devices

Work Required

  • Retrofitting the tablet into the mount
  • Getting the tablet OS into shape for talking to USB devices
    • Might need a custom OS with a special kernel
  • Writing Android app for control/orchestration of the USB devices
  • Getting BT audio sink mode working
    • This is a BIIIIG IF, otherwise use the same BT device as with the single DIN setup
  • Get power hooked up to everything
  • Get the microcontroller software talking to the tablet via ADK
  • Get the microcontroller wired into the BT device if applicable
    • needs to be able to put it in pairing mode if it doesn't go there automatically
    • only matters if BT sink mode isn't going to happen
  • Get the front controls wired into the microcontroller (BT device if applicable)
  • Get the microcontroller talking to and controlling the audio switch
  • Get the microcontroller talking to the AMP
  • Get the microcontroller talking to the FM receiver (optional)

Pros

  • More storage options
  • Dedicated unit for operation
  • Better integration into car
  • Able to interface and work properly with any smart phone that has BT
  • Larger screen for more mapping awesomeness
  • Higher quality audio for HQ sources (USB DAC)

Cons

  • Higher expense
  • Tied to specific tablet
  • More space