Flexible railway model gate controllers with ATtiny24

gavrasm's picture
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For those that are addicted to railway models: these stand-alone pieces control the opening and closing of railway crossing gates with

  • a servomotor, or
  • a stepper motor.

Open and close positions can be configured by two trims, another trim regulates the speed of closing and opening. Gate status is displayed on a red/green LED that can be used as traffic light. Total costs are below $10 and small PCB layouts are provided. Software is in assembler and extensively commented.

The servomotor at work:

Gate driver with servo

 

The stepper motor at work:

Stepper motor controller

 

All software can be downloaded from the project locations.