Control Relay Modules With Arduino
Toms Trains and Things
First we slow down the turnout points, then we control frog power with a relay, all with Arduino. Then if we have multiple turnouts to control, a relay module comes into play.
Here we show how easy it is to set up and explain where your feeder wires should go and why. The relay modules are a versatile board that switches the frog power to the correct value when the switch points are thrown.
The relay modules with more than one relay use an external power supply to drive the relay coil. This protects the Uno or other microcontroller from overtaxing itself and damage.
These relay modules are activated LOW, so they need a LOW command to be thrown. This is just the opposite of how most relays operate. There are some modules that have the capability to change to value of what triggers it. None of the modules shown here have that option.
Additionall Info: https://tomstrainofthought.com/projects/relays/
#TomsTrainOfThought #Arduino #RelayModule
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