Mmastodon LifeHome & Garden first seen 3 d ago, last 3 d ago, peak #10

Engineer builds traffic light control system with Siemens PLC

Original: Building a traffic light control system! 🚦 ​I'm programming the logic in Ladder via TIA Portal on a Siemens S7-1200 PLC.

A hobbyist has built a working traffic light control system, programming the logic in Ladder via TIA Portal on a Siemens S7-1200 PLC. Because the PLC outputs run at 24V, an optocoupler driven by an Arduino Uno is used to safely trigger 5V LEDs on a breadboard, alongside industrial pushbuttons for input. The project blends industrial automation tools with low-cost maker hardware, and is drawing attention from electronics and automation enthusiasts.

Why now: It combines professional PLC programming with accessible Arduino hardware, appealing to makers and automation engineers.

Siemens S7-1200TIA PortalArduino UnoElegoo

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• Building a traffic light control system! 🚦 ​I'm programming the logic in Ladder via TIA Portal on a Siemens S7-1200 PLC. ​Since the PLC outputs are 24V, I used an optocoupler powered by an Elego Uno (Arduino) to safely trigger the 5V LEDs on the breadboard. An industrial push… · nickbearded · 5

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