This fishing warning circuit electronic project is very simple and can be used as an indicator useful in fishing. The fishing warning circuit signals when a fish took the bait. When you hooked a fish, sensor close current terminals situation where both LEDs light. In addition to this diode, a buzzer can be used to generate an acoustic signal. D2 continues to shine even after reopening sensor until SCR no longer receives holding current. In this way, any hook thread tension is indicated by D1.
Circuit absorbs a current of 20-60 mA, depending on LED type and the presence or absence buzzer.
The sensor consists of a mercury switch and a fastener.
Fasteners is placed on the wire immediately below the reel. When the wire stretches, the circuit is actuated.