ELECTRONIC FISHING ROD

Hard for the uninitiated to understand anglers who sit all day, as if hypnotized, with a fishing rod, not taking his eyes off the float. Of course, patience in the end lost even the most avid, especially if the fish are not often pleasing bites. Therefore, many experimenting, testing in practice, various devices, signaling a bite. Considerable help in providing electronics. An example of this is a simple electronic device which allows you to monitor from up to four fishing rods — the bite on any of them will notify you of the light and sound signals. Indicator can be use by fishing from the shore, from boats and off the ice, determining the time of the bite to any of the four fishing rods in the evening and at night, and stay at some distance from the place of fishing.

The principle of the indicator is simple. On the rod in the vicinity of the coil is attached to the sensor (Fig. 1), that the bite angle of the line closes the contact pair comprising the power electronic devices, lights the corresponding lamp, and at the same time a tone sounds.

 

Fig. 1. Snap-in rods.

The design of the sensor can be varied. For example, suitable switches are the type of MP5, МП3А or closing of any contact pair from the relay. In an extreme case, the sensor is easy to make yourself. To do this, take two elastic metal (e.g., bronze) plate with a length of 50-80 mm and a width of 5 mm. From one end they drilled holes Ø 2 mm for the copper rivet, acting as a contactor. In the same place to the top plate of the sensor is soldered a small ring for a transmission line. From the other end in plates drilled holes Ø 0,8—1 mm for connection of connecting wires, and then, departing from the end of the 10 and 18 mm, drill two holes Ø 3 mm for fixing screws. The site is going with the use of insulating pads of the PCB or Micarta, the thickness of which depends on the gap between the plates. During Assembly in the mounting holes injected insulation tube (cuts the rod of a ballpoint pen), and insert the screws, with which the sensor is attached to a mounted on the rod bushing. Instead, you can use metal brackets, clamps, etc.

 

The electrical circuit of the indicator (Fig. 2) economical, it does not contain scarce parts, and because it can be repeated by any new ham. The generator of a sound signal collected by well-known scheme for two transistors of different structure: VT1 — any series МП39—МП42, VT2 — series MP35—MP38, KT315; diodes VD1-VD4 type D2, D9 with any alphabetic index; resistor — MLT or any power of 0.125 W, a capacitor — MBM, the dynamic head of BA1 — any brand with capacity 0,1—0,25 W incandescent lamp HL1 — HL4 2.5 V (0.15 A) – flashlight; power source – three elements РЦ53 or the battery voltage of 4.5 V; connecting wire mgshv-section of 0.2 mm².

 

Fig. 2. Schematic diagram of the alarm device (elements XP1-XP4, SA1-SA4 are mounted on the rod).