HO scale train tachometer with Arduino Nano

Printable parts for building the HO scale tachometer shown in the YouTube video: https://youtu.be/ItbT91l_tuc

This video is essential viewing to understand what it's all about and how to build it practically.

• Two types of enclosures for mounting the Arduino Nano under the track (vertical or horizontal mounting) and a display panel containing the 0.91-inch SSD1306 OLED screen.
• And another "all-in-one" enclosure that integrates the OLED screen.

A clip allows for mounting the OLED screen.

The tachometer uses two TTP223 sensors to calculate the speed of a train on a track.

The TTP 223 track can be easily installed on existing track, even ballasted track, thanks to a video clip that can be downloaded here: https://www.thingiverse.com/thing:7365155

The Arduino code is provided as a link in the YouTube video and is extensively commented so that anyone can use it, even without any programming knowledge.

Note that I also created a 6-video course on the basics of Arduino C++ programming, covering the essential knowledge needed to understand and adapt existing code to your needs. The playlist is here: https://www.youtube.com/playlist?list=PL-yyXzO5kE6Hekfkp8nazrHEPZ_yBvUm6

Printing in PLA without any difficulty using a 0.4mm nozzle and a 0.2mm layer height