Difference between revisions of "NexDeck"
From Makers Local 256
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: |
Contents
[hide]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