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Can anyone tell me why this doesn't work?
At switchon I get a short notification from the LEDs on the DR5033. The track is not getting any power. The DR5033 is visible from the YD7001.

Are you 100% sure you do not have any of your track feeders swapped?

Or that you don’t have any tools laying across the tracks or anything between the two rails that might be causing a short (don’t ask me why I am suggesting you check this)

If you are sure the track feeders are not swapped, I would remove every “A” wire and see if it still trips. If it does, then start removing the black wires one at a time until it doesn’t trip. You should find your short.?
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When you hit the green button on the YD7001, and the booster LEDs show a short, does the YD7001 also show a short?

Are you double gapped between the YD7001 and DR5033?

FYI, I have this same setup.?
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Heath,
Useful because one of my concerns was that it simply wasn't a valid design. Here's why:

• In some discussions the track output wires do matter in boosters. Others mention it is an H bridge and swapping the wires doesn't matter except they should ALL be the same way around.
• I have auto-reversing turned off in the DR5033's and I have double gaps between DR5033.
• The diagram picture is actually a physical layout / wiring aid. So the wires are as seen on the little power board I have wired up. The modules are actually upside down but how it looks is exactly as shown.

I have 3 of these boards made up. I showed the one with the fewest blocks for simplicity. They all behave the same way.
No, there are no actual shorts across the rails as measured by my ohmmeter. That was a very easy test to do.
Yes, the YD7001 is aware of the short and green button does bring up the fault LEDs of the DR5033s.

I have been too busy to try more advanced trouble-shooting, As mentioned I was interested to know if it was a valid design. If so, then no doubt I will have one of those eureka / facepalm moments when I realize my blunder.

Which Power Supply do you use un the DR5033's and The YD7001 ? And do they all have their own PSU ??

?

Greets,

Karst

Each DR5033 and the YD7001 have their own 15v power supply that came with the module.

Ok,

?

Then your pre-req's are Ok,

?

Swapped 5033's already ??

Well I have some progress. I doubt anybody will find it useful, but here it is anyway:

• I use Tortoise switch machines.
• Some time ago Tortoise changed the edge connector so if you were using a screw terminal adapter like I am, then they no longer fit. It was a few mm longer. An adapter became available in the new size so I bought lots of them.
• I use one pair of Tortoise changeover contacts to switch the frog from one rail to another. I use the other pair of changeover contacts to show a YD6016LN-GND that the turnout is actually thrown.
• I was using exclusively new adapters on all my Tortoises. It now appears some of my Tortoises were of the old variety. Ah!
• The new adapter fits on the old Tortoise but the old Tortoise has a shorter edge connector which means the new connector can move from side to side. If you have followed along you will realize that adjacent terminals can short out to each other if the connector is not exactly centred.
• In meant that both rails of the turnout could be shorted together.
• Earlier when I did my short circuit test with my ohmmeter I had only tested straight track. All my shorts were in fact in the turnouts which are isolated. Yes turnouts are their own block on my layout.

I happened to have some old adapters on hand and when I swapped the adapter to the old one, a turnout suddenly behaved properly. I will slowly work my way to all turnouts and see if there are any other blunders to cause embarrassment.

To finalize the story: it now all works.
I got JMRI to populate the sensor table as I switched each turnout and as I drove a loco along each track.?
Not too surprisingly I got a few wires crossed over but now the layout design in 3rdPlanit matches the actual layout.

Only one surprise here - JMRI will not use the USB / COM port that the YD7001 uses unless I start JMRI first.
I haven't fired up iTrain yet so I don't know if it will get upset if something else is using the COM port.

Nothing ever goes to plan. I guess that's how we learn.

I find it interesting that you have to start JMRI first as I have always found the opposite.?

Glad you got it working.?
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