Hello everyone
Has anyone by chance a working model of a Märklin semaphore wingsignal such as the 7040, which is activated by an INFRARED gate?

How must it work?
The infrared gates (5 Volt DC) triggers a ONE-shot monostable multivibrator and the OUTput trigger is passed through an TRIAC optocoupler and Thyristor.

The OUTput of the Thyristor switches the solenoid coils 16V AC. The OUTPUT must be max < 1 seconds in order to prevent burning the soleniod coil/relay.

At the same time the infrared gate is triggered, a parallel circuit must be triggered. After 30 seconds this circuit must switch back the wingsignal (TRIAC opto and Thyristor)

I already made a couple of circuits "TRIAL & ERROR" but all these examples gave me not the correct solution, however those newly TRIAL built circuits were of additional benefit.

I am looking forward to your news
Regards
Henry

thank you very much!! The "solidstate relay" you posted is what I described as OUTPUT for momentary switching and resetting of the semaphore wingsignal.
I know that a lot of Viessmann semaphores have so called built-in "end or limit switches" which the Märklin signs do not have. The same is with the Märklin M turnouts. (1 pulse <1 sec = switch etc.)

You made a sketch for the Arduino UNO /MEGA.
With this software you have covered the hardware which I described to make it possible to obtain a single switching pulse from an IR gate regardless how long the IR gate is covered by a passing train. It only gives 1 triggering pulse less then 1 second.

Do you have such a circuit available with IC's logic gates? I looked also at Talking Electronics website and other model railroad sites. Solutions with NE555 timers I studied but I am not able to make a working circuit because the technical knowledge, I do not have.

Is it possible that this ARDUINO software, you have written, that this software can be put into an ATTINY85"?
The sequence for the ATTINY could be:
1. IR gate --> 1 pulse= <1 sec
1.1 OUTPUT start rising wing signal
1.2 start timer (NE555)
1.3 END timer (after a delay of 25-30 sec)
1.4 timerpulse < 1 sec
1.5 OUTPUT start lowering wing signal
1.6 WAIT for NEXT pulse

Hello Andry
Thanks for taking the time and help me with the search for a solution.
First of all the Marklin semaphores are used for a visual enhancement of a model railway layout.

The only thing the semaphores have to do is rising and lowering the arms. No switching and blocking tracks or otherwise.

What does an INFRARED gate do:

The IR gate sends a digital signal when the train passes the IR gate. This signal is a continuous HIGH signal.
In LOGIC terms: HIGH= 111111111111111, as long as the train is passing the IR gate.

When the train has passed (the back-end of the train is not blocking the IR gate anymore) the IR signal is LOGIC LOW= 0.

I am looking for a circuit that changes the continuous HIGH=1111111111 into a single pulse HIGH= 1 for rising the arm of the semaphore, and a timing component (NE555) which activates a trigger-pulse after 20-30 seconds in order to lower the arms.

Of course I found a lot of material but as already explained I made a lot of circuits on “trial and error” basis but to have a circuit working, this “is a couple of different and other sleeves” .

So the circuit is I think a NON retriggerable ONE-SHOT MMV which detects the IR signal on the rising edge and sends a pulse (less then 1 second) to the SSR and the semaphore coils.

The timing component is a NE555 which must be activated.

This could be done in 2 ways:
1. Start counting when IR gate “rising edge” is HIGH ( logic 1)
After 20-30 seconds: STOP counting: OUTPUT signal: lower arms

2. Start counting on “falling edge” LOGIC 0
After 20 seconds : STOP counting: OUTPUT signal: lower arms

Re: Attiny85> One could programme the ATTINY85 with INPUT the IR signal and a timing component.
The OUTPUT of the ATTINY85 is passing the signal to a SSR (as you have drawn) to switch the coils.

After the timing has elapsed, a new signal is given and the arms are lowered.

I have programmed an ATTINY85 with a levelcrossing bell sound (see CKT-Tinybell Rail Road crossing bell circuit by Nathan D Holmes) This gives a very fine and realistic bellresult.

I have made also a Marklin M levelcrossing with moving booms working. In post https://www.marklin-user...n-level-crossing-project (made by mr. Howard Ryan) he describes in his post how to use micro-motors controlled with leaf-switches.
So first I am looking for hardware solutions and after that I can always use Arduino.

Thanks again for yr cooperation
regards
Henry

Yes Andry, this is a smooth operating levelcrossing. Great to see this!!!
I will enclose also a link to my Youtuup of my levelcrossing. (and other modules) @Marklinlevelcrossing

Let me explain other details which will give you an inside:
My hobby is micro electronics but it is not my profession nor that I have any education in this field. So all I have is reading, reading, trying and soldering. Sometimes something burnes and it smell like "H....." ! So TRIAL and ERROR with a lot of ERROR .

The only railway track I have, are 4 seperate modules of approx. 2.2 mtr each with a double track. Because of lack of space in house, I hung these tracks along my wooden fence in the garden (in summertime). Every evening the modules had to be disassembled and the next morning (only by good weather circumstances) assembled again. (5 years ago was the last time the modules were placed)

In winter, the modules were placed in the attic. A couple of weeks ago I mounted some shelves in a spare room in our house where I can place the modules.
The "trainfever" took hold of me, because I made several visits to my friend and saw his layout, and I liked to start with my tracks again.
But everytime I want to start, my friend has a request for making modules. Now he has the Marklin M semaphores. He had also a Viessmann 4900 semaphore (with end switches) so I made a monostable relay time-delayed on 5 Volts DC and OUTPUT 16V AC: It functions.

I have 2 friends how have large railway layouts: 1 friend has a layout measuring 4x10 meters with additional mountain tracks and 3 level-track: When 1 train starts its trip, it takes approx 5 min to finish.

The other friend has a much larger layout in his attick: L-shape 15x5 and 12x4 meters. They run both Fleischmann. On both tracks I made several appliances and modules such as the Marklin M Levelcrossing 7192 with moving booms.

Both friends equipped theire layout with DIGITAL controlled equipment however the Analog possibilities are still present. So when they ask me, can you make a module for me, I will look into my arsenal of components, make a diagram and solder the modules and they function (or not ).

So further to the twin coil driver, I have found something on GITHUB: it is the circuit with a 74LS123 Dual re-triggerable Monostable Multivibrator with "rising and falling edge-detection" .

I will make new diagram and place the component on a breadboard for "trial and error" . I will come back to you.
Thanks again