Any help in amending the code to include the limit switches would be greatly appreciated as i am a bit out of my depth.
Dc motor limit switch circuit.
The switch s1 is used to instantly reverse the motor direction whenever.
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When the control switch is held in the right position the motor runs until the right limit switch opens.
The interlocks are specially important because if both relays are on it would be a short circuit.
Since diode cr1 will not conduct with a negative potential across it the motor will stop.
Imagine you have two circuits each carrying the same current one is an ac circuit and the other is a dc circuit.
The circuit uses 2 relays 2 limit switches and a dc motor.
As illustrated the relays have to be dc same coil voltage as the motor but the bottom can be separated and fed from a different voltage.
When you switch off power to an ac circuit a voltage spark or arc is created.
A very cool and easy dc motor speed controller circuit could be build using a just a single mosfet a resistor and a pot as shown below.