DIY Short Circuit (Overcurrent) Protection

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More project information (schematic, pictures, ....) on Instructables: https://www.instructables.com/id/DIY-...

Parts list (incomplete, see Instructables for more information, affiliate links):
Aliexpress:
1x Relay (12V one with 2 changeover contacts): https://s.click.aliexpress.com/e/_dXy...
2x PCB Terminal: https://s.click.aliexpress.com/e/_dYb...
1x LM358 OpAmp: https://s.click.aliexpress.com/e/_d6V...
2x BC547 NPN Transistor: https://s.click.aliexpress.com/e/_dU8...
1x 5mm green LED: https://s.click.aliexpress.com/e/_dV6...
1x 1N4007 Diode: https://s.click.aliexpress.com/e/_dYR...
1x Tactile Switch (NC): https://s.click.aliexpress.com/e/_dXI...
6x 1kΩ, 2x 20kΩ Resistor: https://s.click.aliexpress.com/e/_dTP...
1x 10kΩ Trimmer: https://s.click.aliexpress.com/e/_dTF...
1x 0.1Ω Resistor: https://s.click.aliexpress.com/e/_dZK...
Ebay:
1x Relay (12V one with 2 changeover contacts): http://rover.ebay.com/rover/1/711-532...
2x PCB Terminal: http://rover.ebay.com/rover/1/711-532...
1x LM358 OpAmp: http://rover.ebay.com/rover/1/711-532...
2x BC547 NPN Transistor: http://rover.ebay.com/rover/1/711-532...
1x 5mm green LED: http://rover.ebay.com/rover/1/711-532...
1x 1N4007 Diode: http://rover.ebay.com/rover/1/711-532...
1x Tactile Switch (NC): http://rover.ebay.com/rover/1/711-532...
6x 1kΩ, 2x 20kΩ Resistor: http://rover.ebay.com/rover/1/711-532...
1x 10kΩ Trimmer: http://rover.ebay.com/rover/1/711-532...
1x 0.1Ω Resistor: http://rover.ebay.com/rover/1/711-532...

Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod (incompetech.com)

In this project I will show you how to create a simple circuit that can interrupt the current flow to a load when the adjusted current limit is reached. That means the circuit can act as an overcurrent or short circuit protection.