If this is the case, maybe we can have the "clean signal voltage" out of pin 9 of this IC. They call it the demodulated signal. In the first video, they report a whole lot of fish. We can also see on the corner that the depth is stable at about 1.5m. Not way off from what I can tell by the image. Secondly, its wireless transducer eliminates the nuisance of cables, leaving more room for tossing fish there. Wireless range works to a distance of 147ft from your standing position. Impressive specs - our portable sonar fish finder boasts high-level specs that help you make the most of each trip! casting far out to 165 ft / 50 m and also deep down to 165 ft / 50 m with a 40° sonar beam for ultimate accuracy and coverage. this under water fish finder also has a night fishing mode.

Lucky FF718LiC Wireless Sonar Colour Fish Finder Lucky FF718LiC Wireless Sonar Colour Fish Finder

Furthermore, you can also switch to wired mode to make it compatible with your chosen fishing type. Depth Capability DC to AC converter -- AC pulse (PWM?) - high impedance transducer -- AC echo --> AC to DC conversion --> DC voltage to depth value.Its 2.8” display is again a stark contrast to the stereotype portable gadget. The cutsie little LCD has three colour tone settings along with adjustments for fish icons and alarms to correspond with chosen fishing type. This has a built in compass which tells you which direction and speed your boat is sailing and the distance to the marker and the home point. This is incredibly helpful for night fishing! Those are The IF amplifier input pin and IF amplifer bypass pin. (see picture of the typical schematic from the IC datasheet).

Interfacing fish finder take 2 - Project Guidance - Arduino Forum Interfacing fish finder take 2 - Project Guidance - Arduino Forum

Despite being small enough to fit in your hand, the unit has powerful sonar that can sink to an astonishing 328ft depth to collect information that will help you outwit the finned prey.

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device for GPS, Fishfinder, Echosounder, Compass and battery indication and all displayed in a color screen! You can also take help from its shrill alarm to instantly know about the presence of fish in your vicinity. This feature tilts the balance in your favour during nighttime fishing and ice fishing. LCD Display There are a number of Fish Finders on the market which run on WIFI connectivity. This limits your range to a maximum of 75 meters which is not enough for most lakes! Our Fish Finder has a 300 meter range which will cover almost all lakes! Smart technology - use innovative, cutting-edge technology to your advantage with our fish finders & depth finders. by generating its own wi-fi, our start depth fish finder won't eat up your mobile data and automatically saves every scan with time and location for easy revisits!