ALP Hifi Keypad pinout for switches

Flonase

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I made these breakout boards for another user on rdf. I still have 9 pcbs left so I can probably solder up a few more and send em out.
Basically they plug in between the cpu and control set and break out the two buttons on screw terminals.

View attachment 121768
That’s fantastic! Can you share the basic circuit diagram? Just the interesting part - no need to include the pin-to-pin connections straight from one RJ45 to the other.
 

SquirrelMaster

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That’s fantastic! Can you share the basic circuit diagram? Just the interesting part - no need to include the pin-to-pin connections straight from one RJ45 to the other.
It will be nothing interesting. Literally just a breakout boards with 0 active parts. The pcb has 2 rj45 connectors and 2 screw terminals.
 

Flonase

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IIRC, Here is what the pinout on the rj45 connector is:
  1. Data
  2. Data from control set to alp
  3. GND
  4. 5v power for control set
  5. Data/signaling (not sure what this line is used for)
  6. Menu button (3v3 pull up, active low)
  7. 12v power
  8. Power button (12v pullup, active low)
As long as that’s correct, that was really all I was after. Thanks!
 

CA90

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Regarding the comments about bluetooth shutting down HiFi and worrying about the phone dying in that state.

Has anyone looked to see if the bluetooth module communicates to the control box the same way the control set does? Theoretically they would communicate the same way and the bluetooth module is basically simulating a button press.

control box -> breakout -> bluetooth -> HiFi

If that is true, the having the breakout between the control box and breakout instead of connected directly to the control set there is nothing to block buttons presses originating from the breakout. Then you can have both buttons and bluetooth.
 

SquirrelMaster

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No Bluetooth is different. That being said, you should be able to use the hifi buttons and the breakout buttons to kill during an alert when on bt
 

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