Introduction: || LM555 || Flashing Railroad Lights
This circuit flashes two red LEDs for a model railway crossing.
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Step 1: Construction Materials and Tools
Construction materials :
Resistors
- Ra = 68kOhm
- Rb = 39kOhm
- RL1, RL2 = 220 - 470Ohm
Capacitor
- C = 47uF/16V
Semiconductors
- LM555
- Led1, Led2
Τhe required tools :
- Breadboard
- DC PowerSupply+12Volt
- Some wires
Step 2: Follow the Steps
Follow the steps like in the photos...
Step 3: Follow the Steps.
Follow the steps like in the photos...
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Comments
6 years ago
I made a similar circuit when taking electronic classes and used ir emitters and detectors to trigger the crossing lights from a distance before the crossing and latching them till the train fully cleared the crossing. Made it very realistic. Can't remember the full schematic but maybe you can incorporate it into your design.