I've been working on a couple of back burner roundtuit projects.
1.)
I have 2 locations where I have crossing signals. IR avoidance sensors trigger the signals when a train crosses the road.
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The sensors operate on a reflected signal. They don't have a lot of range, are affected by ambient light, and don't work well with black objects (locomotive frames). Have been marginally successful in implementation.
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Decided to experiment by remounting the emitter (not sure if it is the emitter or receiver) to the far side of the second track. Now the sensor operates when the beam is broken rather than detecting a reflected beam. Range is about 6" which suits my application since the crossing is for 2 tracks. New configuration is more reliable and not affected by changes in ambient lighting.
2.)
Next is upgrades to the control panel.
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Three wall wart supplies provide power to the NCE power cab, 12vdc buss, and 5vdc buss. A bulk supply behind the panel supplies power
to a homemade dc throttle. The white supply is a cell phone charger and is marginal in supplying the 5 volt needs of the layout. The 12volt
wall wart is operating close to capacity. Been a kludge for way too long.
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A dual 12 volt-6 amp and 5 volt-3 amp supply is mounted under the distribution terminal blocks. An upcycled 18 volt laptop power supply replaces the bulk dc throttle power supply.
Since my layout is only 5 ft x 10 ft, I decided against running 12 volt and 5 volt busses under the layout. All 12 volt and 5 volt loads have
individual runs back to the terminal blocks, eliminating the need to make connection from drops to busses.