AZL PA1 DCC & Sound

 

Index:

Overall Configuration

Frame Modifications

DCC Installation

DCC Chip Installation

Adding Caps to DCC

Sound Installation:

DSX Chip Modification

Adding Caps to the DSX

Speaker Modification

Sound Installation

Putting It All Together

 

Overall Configuration

TBD

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Frame Modifications

Drilled out sides to that the motor contacts had room, which originally pressed on the inside of the frame halves.  Also had to drill vertically to run the wire up to the top.

Cut out for DCC decoder:

Frame cut for decoder.

Motor Contact Holes:

Holes drilled to allow clearance for the motor contacts.

Wire Holes:

Vertical holes to run the motor wires through.

Top File:

Files down the tops to gain some extra space for other wires..

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DCC Chip Installation




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DCC Caps to DCC




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DSX Chip Modification

The key to getting sound in the F7s is to modify the DSX chip.

Step 1: Board Prep:

- File the circuit board down as close as possible to the components.

- The newer version of the chip has a cap right along my cut path, so it needs to be moved.  Since de-soldering wouldn't work for me, I took a very sharp exacto knife and carefully sliced it right off the circuit board.  NOTE: Rejumper the cap and test the chip!

- Cut off the 5 pin connector. NOTE: Take caution as the copper traces may peel of the circuit board easily.

Step 2: Board Cut and Clean:

- Cut the board with the sharpest and thinnest blade possible.

- Clean up all the edges and make sure nothing is shorted!  Even the sharpest saw may tear through the thin copper traces and leave dingle berries (burrs).  I lost a chip like this!

- File corners where the chip will be in the fuel tank.

Step 3: Rejumper Connections:

- Solder away! I used as low as heat possible while still making sure the solder joints were solid and shinny.

Step 4: Test With Caution:

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Adding Caps to the DSX




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Speaker Modifications

Size comparison of speakers.  Altered speaker is trimmed down on both sides.

The cut sections of the speaker are then filled in with a light wall of silicon to further enclose the speaker cone and stop rattles.

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Sound Installation

TBD.

F7 example:

The mangled DSX chip will fit right in here.

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Project Conclusions




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