Electronics workshop: manufacture your own electronic bait

Electronics workshop: manufacture your own electronic bait

Electronic bait attracts fish.

Electronic bait attracts fish.

One week we shared a lesson electronics , this time more practical than theoretical. Surely many of you are fishing enthusiasts – and if you will not serve as practically, so we are going to teach to make an electronic bait with many common components that either will have already or will be able to easily find . Do you dare with this project?

Fishermen usually carry various types of bait intended to attract all possible fish. Its main mission is to fool the fish into thinking it is a small insect or worm can eat.

Building a home electronic bait fishing.

Scheme electronic bait.

All fish are endowed with great sensitivity to any sound stimulus , which spread very well in water. When an insect falls into the water, their attempts to leave generate a series of acoustic waves are captured by the fish in the area, which come quickly.

Fish are very sensitive to low frequencies , and typically investigate curiously element that generates. Electronic bait that will manufacture emit low – frequency waves that will appeal to our bait fish. We started!

The components are readily available.

Components for making home electronic bait.

First, this is the list of components needed:

  • 1 Resistance 1 K (brown, black, red).
  • variable resistor 250 K.
  • 2 Electrolytic Capacitors 22 uF / 16v.
  • 1 LM555 integrated circuit.
  • 1 Socket 8 pin.
  • 1 Battery 12v (the remote control).
  • 1 Square islets.
  • 1 boat photographic film.
  • 1 Speaker 8 to 32 ohms.


To assemble this circuit components list it is necessary. As tools it is sufficient with welder 30w , tin of 1 mm and a cutting pliers .

As mounting plate you can use plate ‘islet universal’ type. First we must weld the socket integrated, as well as resistors and capacitors.

Then we can check that everything is correctly mounted, and finally we can put the 555 into its socket and power the circuit.

The small speaker can be recycled some old or unused helmets, either way this or any other model is easy to find at an electronics store. As feed a small stack of 12 v thereof which are used in some remote controls should be used.

All components are very common.

Assembly of electronic bait.

Given the reduced consumption of the circuit, this stack can have many hours of fishing. Once assembled and powered circuit, if everything is correct, should hear a series of taps on the speaker. Through P1 we can vary the signal until it appears less cyclical and spaced.


As you can see in the diagram, the entire circuit is based on the known 555 . This integrated is set in our assembly and oscillator frequency very low .

The output frequency may be from a few Hz per second, or approximately one minute, adjusting the resistance of 250K (P1).

This frequency is determined by R and C.

The signal generated in the integrated exits the pin No. 3 and applied to a small speaker 8 to 32 ohms. As can be seen the output is applied through an electrolytic capacitor.

555 circuit detail.

Because of the very low frequency output on the speaker is audible only a small ‘tap’; This ‘toc … toc … toc’ continuous and spacing spreads in the water, as if something had fallen into it.

Fish quickly come to believe they have before a possible dam itself, which is correct because our circuit is located just above the classic bait (worm, fly, etc).


Once assembled and adjusted the plate, we can get our circuit in a small container of photography , which is water resistant and prevents water from penetrating inside. This container should be subject to a few centimeters bait you’re using.

Thus the bait will be submerged, and our claim will be floating just above the signal producing attract fish.

Now that you have the parts list and instructions, who are encouraged to make their own electronic bait?

If you have interest in learning more electronic, we recommend performing electronics course . If you control theory, best practice with mounting kits .

If you do not hesitate to share it, We will like to see your creations! 😉

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