Railway Crossing Multi Track Two Way

    This article is based on the article with same name and Railway Crossing Part 4: Putting it all Together article.

   My tests included few models until at last version with sounds (warnings) and other count method for trains, but main structures are same:

- Railway_Crossing_1 (just added tip and free lights), sketch: us_barriers_rudysarduinoprojects_1b.ino

video: bariera automata pentru 2 linii (sine) cu monitorizare trenuri

video: Railway Crossing Multi Track Two Way (lights improvements)

- Railway_Crossing_2 (added sounds using Mike Osborn MKO tips),sketch: bell_and_button_servo_4

- Railway_Crossing_3 (added sounds and test different count methods: original with few updates or big changes)

with 3 sketches 

- us_barriers_2b

- us_barriers_2x

video: bariere automate cu avertizari sonore (americane) pentru 2 sine

video: Railway Crossing with Warnings for Multi Track Two Way

- us_barriers_2y

and last improved sketch:

with this schematic (LCD1602 with i2c interface is not added)

   For last sketch, I uploaded this videos:

- bariera automata cu lumini si sunete pentru cale ferata dubla

- Railway Crossing with lights and sounds for Multi Track Two Way

   If no train between IR sensors, barriers (gates) are open:

but at least a train is between sensors, barriers (gates) are closed:

29.08.2022

   I changed the sketch for remove sound after gate is open (us_barriers_2b_2)

as Jedidiah Sawyer wanted. 

    You can see video named Arduino Railway Crossing with sounds (video by Jedidiah Sawyer):

   Last change of the sketch is to have also fading light as in 2nd Avenue Railroad Crossing, Clanton, AL

so, last sketch is us_barriers_2b_3

and a short video made by Jedidiah Sawyer:

31.08.2022

   The variable for change the fade effects are:

and the fade for LED3 is

so, LED3 is off (brightness = 0), than after 200ms (variable time_to_stop) brightness increased at 1 (variable fadeAmount), than after 2 ms (variable fade_delay) brightness is 2, after more 2ms brightness is 4, etc, until brightness is 255 (maximum = 100%) .. is a pause (time_to_stop = 200ms) and after that brightness decrease with 1 at every 2ms until 0... 

Leds for blink effect (LED1 and LED2) are same period as fadding leds (LED3and LED4):

..so, you can change the values as you want,...