Comments on: Multiplexing ‘Photodetectors’ to detect train occupancy. https://modelrail.otenko.com/arduino/multiplexing-photodetectors-to-detect-train-occupancy Trains, computers, vintage, retro, model railways... the lot... Wed, 01 Feb 2023 03:10:24 +0000 hourly 1 https://wordpress.org/?v=6.4.3 By: First CAN Node: LEDs and Sensors « modelrail.otenko https://modelrail.otenko.com/arduino/multiplexing-photodetectors-to-detect-train-occupancy/comment-page-1#comment-53986 Mon, 07 Nov 2022 04:23:01 +0000 http://modelrail.otenko.com/?p=769#comment-53986 […] Train sensing has been implemented via light sensors. I needed 24 sensors around the track and decided that multiplexing was the only way to read them all. 3x 4051 ICs came in handy and were configured as per the schematic below. You can find a better explanation on light sensor implementation in the article here. […]

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By: Controlling points/turnouts with Servos via the Arduino « modelrail.otenko https://modelrail.otenko.com/arduino/multiplexing-photodetectors-to-detect-train-occupancy/comment-page-1#comment-40185 Tue, 13 Mar 2018 04:48:08 +0000 http://modelrail.otenko.com/?p=769#comment-40185 […] your points based on timing? Or even based on track occupancy detection. Computerised turnout control will allow you to automate any movement over your layout. Of course, […]

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By: stevenh https://modelrail.otenko.com/arduino/multiplexing-photodetectors-to-detect-train-occupancy/comment-page-1#comment-15554 Mon, 24 Nov 2014 22:31:56 +0000 http://modelrail.otenko.com/?p=769#comment-15554 In reply to Steve.

Howdy,

The seller has long since disappeared from eBay. I wouldn’t know where to find these flat ones anymore… your best bet would be to file down other IR sensors.

Steven.

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By: Steve https://modelrail.otenko.com/arduino/multiplexing-photodetectors-to-detect-train-occupancy/comment-page-1#comment-15551 Mon, 24 Nov 2014 20:25:31 +0000 http://modelrail.otenko.com/?p=769#comment-15551 In reply to Steve.

Still cant find photodetectors oike ehat you got.
Do you remember who you bought them off?

Cheers Steve

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By: Steve https://modelrail.otenko.com/arduino/multiplexing-photodetectors-to-detect-train-occupancy/comment-page-1#comment-1083 Tue, 30 Apr 2013 11:37:27 +0000 http://modelrail.otenko.com/?p=769#comment-1083 The photodetectors that you used, could you detail what type and the circuitry design, it is fascinating
What you have done here. Cheers.

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By: stevenh https://modelrail.otenko.com/arduino/multiplexing-photodetectors-to-detect-train-occupancy/comment-page-1#comment-439 Mon, 09 Apr 2012 05:20:53 +0000 http://modelrail.otenko.com/?p=769#comment-439 In reply to Barry.

If you just want to use the Arduino as a throttle then look here:
http://modelrail.otenko.com/arduino/controlling-your-trains-with-an-arduino

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By: Barry https://modelrail.otenko.com/arduino/multiplexing-photodetectors-to-detect-train-occupancy/comment-page-1#comment-438 Mon, 09 Apr 2012 03:34:20 +0000 http://modelrail.otenko.com/?p=769#comment-438 Hi good stuff, have you thought about doing speed control of the trains , i have an old ardunio that I used to use for photography, but i can’t programme :-(

Barry

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