H0 Speed Camera Trailer with Real LED Flash

H0 Traffic Speed Camera

Also known as a speed camera trailer or as the manufacturer calls it: Enforcement trailer

The model is empty inside and can therefore be equipped with an LED

With an Arduino Nano or a corresponding clone, you can easily create a realistic speed camera function

I have uploaded everything you need for this

You can find a wiring diagram and two function variants in the downloads

You will also find a decal sheet in the downloads

As soon as voltage is applied to the Arduino, the LED lights up for 1.5 seconds, confirming that everything is connected correctly

After that, the flash is generated depending on variant 1 or variant 2:

Variant 1: Continuous operation with random flash (File: Dauer_Zufall.ino)

Variant 2: The flash is triggered by a button or reed switch For example, in the Faller Car System (File: Reed_Kontakt.ino)

Variant 2 can be perfectly integrated into the Faller Car System by interrupting the overhead line and installing a reed switch there Variant 2 is also suitable for a simple button

The Arduino sketches are described in such a way that you can adjust all values as desired Explanations are provided next to each

Bill of materials for LED operation:

• red, bright 2V LED
• Resistor 100 to 150 Ohm
• Arduino Nano or clone (e.g. from Elegoo) or other Arduinos

Please understand that I cannot give a basic course on using an Arduino here

However, you actually only need to get an Arduino Nano or a corresponding clone and upload the desired program via USB cable using the free Arduino IDE - Done

Have fun! And let me know if there are any problems :-)

I would be very happy about pictures of a finished model from you in the comments