LUCKY Portable Wireless Fish Finder for Shore Fishing

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Sensor features: with led indicator that helps identify when it's charging or working, it has fish attractive lamp, line hole with built-in rechargeable battery 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. Of the 16 pins, only 7 are connected and strange enough, pin 9 (IC final output pin is not connected - or I failed to find the link yet). I was expecting a lot from this pin.... (: What this IC do with only 7 pins? Can someone figure this out with my finding below?

Lucky Smart Fish Finder – Portable Wi-Fi Fish Finder for

Adjustibility: 2.4-inch color tft lcd, and can adjust the sensitivity, brightness, and chart speed setting. depth upper and lower limit setting can also be adjusted. The display is another distinguishing part of this little guy. 2.8” LCD is better than other portable fish finders not only because of the size but also because of the quality of the view.Pin 12 (RSSI output pin) is connected to ground through a parallel arrangment of a 18 pf capacitor and a 1M resistor and it is the only pin that is connected to the microcontroller (pin 1). I will poke around with a DMM tonigth and try to figure out what is connected. From what I can now, pin 5, 6 and 14 are visibly connected.

LUCKY Portable Wireless Fish Finder for Shore Fishing LUCKY Portable Wireless Fish Finder for Shore Fishing

Alluding to my earlier comment about wires and space, the unit has wired and wireless modes to let it adapt to the kind of fishing scenario you have in mind. If you have the force to throw it 147ft far, things will run without any glitch. DC to AC converter -- AC pulse (PWM?) - high impedance transducer -- AC echo --> AC to DC conversion --> DC voltage to depth value.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. I finded time to look into the circuit in more details. It is too big to be ruled in one post... I would like to share were I am now before I go further. your input will help understanding the next step.

Fish Finder Spare Parts | Howes Models Fish Finder Spare Parts | Howes Models

I tried to connect to the microcontroller with a serial device on the soldering pad. They are connected to RX / TX of the microcontroller, V+ and gnd. But I was not able to see or trigger any data transfer event. I used realterm and a rs232 cable "spy". Rx or tx was not blinking or doing anything. Besides, the economical price and unchallenging operating mechanism fit the bill for beginners and occasional anglers, especially those running low on budget.My problem is I have no clue of where I can take the data out of the HT chip and if I will need to condition the signal for the arduino? Its price and size is the biggest deception; the tool is anything but cheap and shoddy. Uh…I think we will do fine without the fuss of cables and wires on the next fishing adventure. Those are The IF amplifier input pin and IF amplifer bypass pin. (see picture of the typical schematic from the IC datasheet). I am thinking to connect the arduino on the lcd driver and take the data I want out of it to the arduino.

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

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 One reason for its multi-functioning capacity is the portable and compact size of the gadget. It is small enough to fit even in the hand of a petite female, which means you could easily accompany it on a kayak or a small watercraft without it overcrowding your little vessel. Finally, can someone explain my the basic of coil inductor (the 2 metallic square coil on the board). I google about this. They have 5 pin. 3 on one side and 2 on the other. I think the 3 pins are like potentiometer that allow to adjust the coil inductance value. The other end is fix and will act like a transformer? In any case, both coil inductor are not clearly connected to an IC. There is some transistors in between. I try to follow the signal path but my misunderstanding of the 5 pin vs the transducer input make this job much harder. I also think that the inductor on the rigth is only for reference signal since I don't see any connection with the transducer while the other one is connected to the transducer. Powerful sonar can collect data about water depth, fish location and bottom structure up to 328ft depth.The concise version A). The little fellow blows to pieces all your misconceptions about cheap and small fish finders. After seeing the power of its sonar, I can finally understand why the company calls it one of the best castable fish finders. The puny size of the device has no impact on its sonar potential.