RETIRED GUY PROJECTS

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TOMIX MO510 DCC SOUND

Can't help myself... Started the DCC sound install, although I was originally going to just keep this DCC as there isn't much space.
MO 510 AND TROLLEYS.jpg


So, took it all apart again and started mapping out where I can run the wires. There isn't room anywhere except for a tiny gap between the floorboard and the PCB that I can run thin, shellac wire for the motor. In fact, the two white strips on the PCB are spacers. I may double that up just to make more room.
MO 510 DISASSEMBLED AGAIN.JPG

WIRE THICKNESS.jpeg


Soldered the wires to the motor and will have to cut the leads off the motor contacts on the power pick up strips and solder wires directly to that.
MOTOR CONNECTORS.jpeg


The plan is to isolate the power pick ups and motor from the PCB. The motor and power pickups will be wired directly to the decoder board, which will be installed above the peoples and serve as the cab lighting holder.
10021 ExpBoardN18_Kato.jpg


Cutting the board at the dotted lines on the right will shorten it to 130mm, which should fit perfectly.

I am waiting for the mail man to bring my stuff: 1 N18 sound decoder, 1 decoder board above, 1 set of speakers, and 1 bi polarized board to run the head and tail lamps. Went with that as the PCB requires too much surgery. F0 will turn on the head lights and tail lights on the opposite ends and changing direction will reverse that.

That's the plan at least...

MTF. Hope it doesn't become WTF. haha
 
The stuff came in yesterday, so full speed ahead.

I got the pickups wired and the PCB insulated from the pickups and the motor.
PICKUPS WIRED.jpeg


Then I cut the DCC board and it fits perfectly. Used a hacksaw.
CUT BOARD FIT.JPG


Then installed the COB strip and two 603 warm white LEDs for the driver. 4.7K resistor added.
COB INSTALLED.JPG


Printed up some spacers to get the board as high as possible so that the COB is not visible.
COB CLEARANCE.JPG


Wires needed to be connected to the DCC board: motor, head/tail lights, pickups, speaker.
WIRES FROM PCB.JPG

SPEAKER WIRES.JPG
 
Also cut an access hole in the ceiling for the decoder, stay alive and the original location for the speaker. I printed a speaker enclosure but found that it would still be too thick to fit.
CEILING OPENED.JPG


Used a scroll saw and a lot of effort since the blade is old and dull. Removed the blade to go look for replacement blades today.
TOOL OF CHOICE.JPG
 


Got everything wired in and sound tested.
CABIN LIGHTS.JPG


The head and tail lights are wired to this bi-polar board. The HL goes to the FX1, TL to FX2 and VCC to the constant current diode. The FX1 LED is the positive and FX2 LED is negative when a ground is applied to the FX1 decoder lead.
BI-POLAR LIGHT BOARD.jpg


Now, have to pray that it all fits.
 

Attachments

The stuff came in yesterday, so full speed ahead.

I got the pickups wired and the PCB insulated from the pickups and the motor.
View attachment 273072

Then I cut the DCC board and it fits perfectly. Used a hacksaw.
View attachment 273073

Then installed the COB strip and two 603 warm white LEDs for the driver. 4.7K resistor added.
View attachment 273074

Printed up some spacers to get the board as high as possible so that the COB is not visible.
View attachment 273075

Wires needed to be connected to the DCC board: motor, head/tail lights, pickups, speaker.
View attachment 273080
View attachment 273081
That cast iron skillet is one item I don't have on my work bench. Not sure if I have room.
Some guys get all the neat tools. 🍳

John
 
Next up, my KOTODEN 3000. I already had installed DCC in it, but am going to change it to a sound decoder.
LIGHTS ON_60.JPG


The old setup was a 6 pin.
OLD SETUP_60.JPG


Had to rewire for an N18 socket and had the change the head and tails lights to use the bi-polar board as the sound decoder only has up to AUX2. So, I turn F0 on, and the headlamp and opposite side tail lamp comes on.
BI-POL WIRED.jpeg

N18 SOCKET WIRED.jpeg


Also added the stay alive directly to the socket. VCC and GND. Everything wired and mounted.
ASSEMBLED_60.JPG


Then put it all together and tested.
HEADLAMP_60.JPG

TAIL LAMP_60.JPG


Ready for the sound decoder.
 
Had to rewire the LED board to make it work with the bi-polar board.

Before
BOARD WIRED.JPG


After
LED BOARD REWIRE_60.JPG


I had added jumpers on the pads in 4 places, but when I woke up this morning, I figured out what I needed to do and that was put resistors instead of the jumpers since the red LED comes on and the white ones did not last night. It's because of the internal resistance is much lower than the white one.
 


My Hornby J52s use the old 0-6-0 chassis with the horrible pick ups. I thought the ToM nano SPP would be enough to handle it, but it wasn't. It has two .3F capacitors in series, which comes out to .15F. I had two ToM SPPs sitting around, which are 1F, but they come with 3 wires, one being a control wire for the ToM decoder to turn the SPP on or off (for programming). Since my Hornby decoders don't have this capability and only use two wires, I emailed ToM and asked if I could just tie the control line to the + line. He came back and said yes, so that's what I did.
TOM SPP 60.JPG


SPP and nano-SPP
MINI AND SPP 60.JPG


I had to also add the Hornby connector and got it all installed. Now, the sound and lights stay on for a couple of seconds vice just dying. I think because the decoder is BT, it draws a lot.
SPP INSTALLED 60.JPG


Converted both. Will be running them tonight.
 




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