Psyko's 2007 Mustang

[Psyko]

This is going to be less of an update and more of a road map for future updates as my free time permits.

Center console media controls to get max ergonomics points and make my system easier to use day-to-day. I've had this idea for a sometime, but after seeing a couple cars a the USACI finals with something similar it sparked my interest. Unfortunately after doing some research a wired remote for an Alpine head unit is not as simple as a resistor ladder.

Each command starts with a 8ms high(5v) and then 4.5ms low(0v). Then a series of high and low signals represented by 1's and 0's. I think I'm going to use a small arduino controller to interpret button presses and for now will just have volume up / down, and track up / down on momentary buttons.

Not totally sure what components I want to use for this anyone have any ideas.
Turns out counterfeit arduinos are a thing so going to get it from the source.
Arduino Uno: hhttp://store-usa.arduino.cc/products/a000066

Momentary Rocker: http://www.digikey.com/product-detai...SW311-ND/81509

One switch on the bottom left and one on the bottom right of the gear selector bezel. Could easily add double click or long press functions if I decide I want to do more later.


3.5mm jack
Sleeve -GND
Ring - No Connection
Tip - SIGNAL

Known Alpine codes:

(Start) 110101111101101110101011
Vol Up 11011011110101101
Vol Dn 01101101111101101
Mute 10101101111011101
Pst up 10101011111011110
Pst dn 01010101111111110
Source 10110111110110110
Trk up 10111011110110101
Trk dn 01011101111110101
Power 01110111111010110
Ent/Play 01010111111111010
Band/prog 01101011111101110
Pause 01010111111111010
Band/ta 01101011111101110
Defeat 01101111111011010
Folder/memory up 10101011111011110
Folder/Memory down 01010101111111110
(End) 1010101

I spent a little time and made a working program with a virtual arduino. I used a small resistor ladder so I could distinguish the different buttons. I made boolean arrays of each command I want then depending on the button pressed pass them to a function that outputs it to the HU with the delays.

Example:

boolean volUp[48] = {1,1,0,1,0,1,1,1, 1,1,0,1,1,0,1,1, 1,0,1,0,1,0,1,1, 1,1,0,1,1,0,1,1, 1,1,0,1,0,1,1,0, 1,1,0,1,0,1,0,1};

output(volUp);

//---------OUTPUT-----------------------------------------------
void output(boolean signal[]) {
//first send 8ms high
digitalWrite(alpPin, HIGH);
delay(8);
// send 4.5ms low
digitalWrite(alpPin, LOW);
delayMicroseconds(4500);

for (int i = 0; i <= 47; i++) {
//send bit for 0.5ms
if (signal[i] == 1 ) {
digitalWrite(alpPin, HIGH);
} else {
digitalWrite(alpPin, LOW);
}
delayMicroseconds(500);
// wait 0.5ms
digitalWrite(alpPin, LOW);
delayMicroseconds(500);
}
// send 41ms low
digitalWrite(alpPin, LOW);
delay(41);
}

Fiberglass mid bass enclosure this will most likely have to wait until the semester is over, but I would like to remove the back of my door cards enclosure and build a fiberglass box that will mount to the door frame to hopefully isolate the mid bass driver from the plastic door card. Not only will this kill some unwanted noise it should allow me to raise the high pass filter without it sounding like the door is going to come apart.

[SouthSyde]

Missed a chance to demo this, but I heard it was a greatttt sounding vehicle..

[cadaver]

This is going to be less of an update and more of a road map for future updates as my free time permits.

Center console media controls to get max ergonomics points and make my system easier to use day-to-day. I've had this idea for a sometime, but after seeing a couple cars a the USACI finals with something similar it sparked my interest. Unfortunately after doing some research a wired remote for an Alpine head unit is not as simple as a resistor ladder.

Each command starts with a 8ms high(5v) and then 4.5ms low(0v). Then a series of high and low signals represented by 1's and 0's. I think I'm going to use a small arduino controller to interpret button presses and for now will just have volume up / down, and track up / down on momentary buttons.

Not totally sure what components I want to use for this anyone have any ideas.
Turns out counterfeit arduinos are a thing so going to get it from the source.
Arduino Uno: hhttp://store-usa.arduino.cc/products/a000066

Momentary Rocker: http://www.digikey.com/product-detai...SW311-ND/81509

One switch on the bottom left and one on the bottom right of the gear selector bezel. Could easily add double click or long press functions if I decide I want to do more later.


3.5mm jack
Sleeve -GND
Ring - No Connection
Tip - SIGNAL

Known Alpine codes:


I spent a little time and made a working program with a virtual arduino. I used a small resistor ladder so I could distinguish the different buttons. I made boolean arrays of each command I want then depending on the button pressed pass them to a function that outputs it to the HU with the delays.

Example:


Fiberglass mid bass enclosure this will most likely have to wait until the semester is over, but I would like to remove the back of my door cards enclosure and build a fiberglass box that will mount to the door frame to hopefully isolate the mid bass driver from the plastic door card. Not only will this kill some unwanted noise it should allow me to raise the high pass filter without it sounding like the door is going to come apart.

Dude!, that sounds awesome...now, again,but in english

[dejo]

in english- he has a science project going on. hehe

[cadaver]

in english- he has a science project going on. hehe

now THAT makes sense.

[Psyko]

FedEx smartpost finally got around to delivering the other box with all the cool stuff in it. Here's what I've got so far.

The plan is to get the Arduino, buck converter, and solder-able breadboard into the project box. The buck converter will be used to step down 12v power to the Arduino to reduce heat generated by the Arduinos onboard voltage regulator. Turns out this thing can get stupid hot if you just feed it 12v+ lol

With a little modification everything should fit nicely.

Testing the resistor ladder with the two rocker switches on the breadboard just outputting with println at the switch statement that determines what button is pressed.

Now I'm deciding if I want to add any extra functions say if a button is held for X amount of time. Thoughts?

[dejo]

I still think the track up/down would work well as a folder up/down as well
but should be cool. wish I wasnt out of town this weekend

[Psyko]

I still think the track up/down would work well as a folder up/down as well
but should be cool. wish I wasnt out of town this weekend

May have gotten a little carried away but I can have up to 12 functions now single press, double press, and long press for each button.

Single:	Volume Down	Volume Up	Track Down	Track Up
Double:	?	?	Folder Down	Folder Up
Hold:	Mute	?	?	?

[Psyko]

Found the time today to finalize the circuit and code and get it in the car.

Single:	Volume Down	Volume Up	Track Down	Track Up
Double:	Mute	Band(May Change this)	Folder Down	Folder Up
Hold:	Volume Down Fast	Volume Up W/Delay	Track Down W/Delay	Play/Pause

Overall I'm super happy with it! It's crazy what it takes to send commands to Alpine head units but not a big deal and I think I ended up with a bit more functionality than a off the shelf steering wheel controller would have given me. Ended up not putting a kill switch in the car after playing around with it I decided it wasn't necessary.

https://drive.google.com/file/d/0B48...ew?usp=sharing

[BigAl205]

That's slick!