Simple Electronic Fishing Lure Circuit

This article shows you how to build a cool electronic fishing lure.

It uses a small buzzer to make sounds that might attract fish.

Even though it is simple to build, it can be very effective.

Note: Fishing regulations vary by location.

Make sure it is legal to use electronic lures where you are fishing.

What is a Electronic Fishing Lure Circuit:

Typical, parts like transistors, resistors, inductors and piezo transducers are used in the electronic fishing lure circuit.

In order to transform electrical impulses into mechanical vibrations that are then transferred via water, a piezo transducer is a crucial component.

In an attempt to draw in bigger fish, the circuit produces vibrations that mimic the movements of prey like insects or small fish.

The circuits operation and the construction procedure are described below:

Circuit Working:

Parts List:

Implement resistor R1 to bias the transistor T1.

This crucial step ensures the proper functioning of the transistor in the circuit.

Introduce resistor R2 as the feedback interrupter a pivotal component responsible for generating a negative feedback pulse from the piezo transducer whenever the transistor T1 conducts.

This feedback mechanism plays a key role in the oscillation of the entire circuit.

Utilize a 27 mm standard piezo element as the core of the circuit.

Safeguard it with a layer of non conductive material to ensure insulation.

The piezo once prepared, is then immersed in water at the fishing location setting the stage for the electronic fishing lure.

The negative feedback from the piezo disrupts the biasing of transistor T1 inducing a high frequency oscillation throughout the circuit.

The specific frequency is determined by the inductor value and the material specifications of the piezo element.

Once immersed, the piezo generates electrical vibrations that transmit through the water over considerable distances.

This simulated buzzing effect mimics the presence of a fly attracting fish towards the electronic pulses and enhancing the lure action.

Formula:

Formula for Frequency Calculation:

f = 1 / 2π√LC

where,

• f: This represents the resonant frequency of the circuit, measured in hertz Hz.
• L: This denotes the inductance of the circuit, measured in henrys H.
• C: This represents the capacitance of the circuit, measured in farads F.
• π (pi): This is a mathematical constant with a value of approximately 3.14159.
• √: This symbol represents the square root.

How to Build:

Follow these instructions to build your own electronic fishing lure using a piezo buzzer circuit.

Prepare Components:

• Gather all the required components and verify their specifications.
• Ensure that the piezo transducer is the 27 mm standard type.

Place Transistor T1:

• Insert the transistor T1 into the PCB.
• Pay attention to the orientation, and use jumper wires to connect its leads to the appropriate points on the PCB.

Connect Resistor R1:

• Integrate resistor R1 into the circuit to bias the transistor.
• Connect one end of R1 to the base of the transistor and the other end to the positive supply on the PCB.

Introduce Resistor R2:

• Include resistor R2 in the circuit as the feedback interrupter.
• Connect one end to the junction of the transistors collector and the inductor, and the other end to the negative supply on the PCB.

Incorporate the Inductor L:

• Integrate the inductor into the circuit.
• Connect one end of the inductor to the junction of R2 and the transistors collector and the other end to the emitter of the transistor.

Prepare the Piezo Transducer:

• Cover the 27 mm standard piezo element with a non conductive material.
• This step ensures insulation and prevents electrical interference.

Immerse in Water:

• Place the covered piezo transducer into the water at the fishing location.
• Ensure that the piezo is fully submerged allowing for efficient transmission of electrical vibrations through the water.

Power the Circuit:

• Connect the power source e.g. battery to the appropriate points on the PCB.
• Ensure the polarity is correct and power up the circuit.

Observe Oscillation:

• Watch for the circuits oscillation as indicated by the piezo buzzing effect.
• The negative feedback generated by the piezo disrupts the biasing of the transistor resulting in a high frequency oscillation.

Fine Tune if Necessary:

• Adjust component values if needed to achieve the desired frequency response and performance.

Conclusion:

It is worth noting that the effectiveness of electronic fishing lures can vary, and their use is subject to local fishing regulations.

Additionally, the success of such lures may depend on factors like the species of fish being targeted and the specific conditions of the fishing environment.

As technology advances electronic fishing lures continue to evolve offering anglers new tools to experiment with in their pursuit of a successful catch.

References:

Fishing lure