Model train swing bridge

Arduino control: StepCom.ino is a control by PC
July 18, 2020: added StepButton.ino to control with 3 buttons or one button and a 2 direction momentary switch. The movement goes to next defined track, or stops at next track when button is released.

June 3,2020: new versions in HO to facilitate alignment,

New: a deck for N scale, to be used with the other parts.

Correction: the enable() and disable() polarities must be inverteded in the Arduino code, as the enable logic is inverted.

Warning; Pont24d4 and d5 have a problem, will correct this asap . Done: new files have a suffix -ok


This is a project to build a model train swing bridge.
It should be adapted to different scales. It is linked to my roundhouse project.
Depending on the space available, different sizes can be planned.

Using a 200 steps stepper motor, and the 144 and 24 teeth gears, various track angles can be achieved.

25, 50, 75 and 100 steps will give respectively 7.5, 15, 22.5 and 30 degrees be