DC to AC converter -- AC pulse (PWM?) - high impedance transducer -- AC echo --> AC to DC conversion --> DC voltage to depth value.

Lucky Fish Finders of 2023 - Best Reviews Guide Top 10 Lucky Fish Finders of 2023 - Best Reviews Guide

Ready to go - easily find where your next catch is hiding with the deeper start fish finder! the lightweight and sleek design makes for a seamless reel without any messy wires or fiddly external batteries required. ideal for shore anglers and family trips who want to get on with catching! Multi-language setting: 21 language selection english / german / french / italian / spanish / russian / bulgarian / chinese / japanese / korean / dutch / swedish / polish / finnish / greek / danish / czech / portuguese / romanian / hungarian / slovak Multi-Purpose design is compatible with various fishing applications, including freshwater & saltwater fishing and ice fishing. Somewhere in the process, a timer is needed to control time between pulse and echo. Or the transducer frequency already integrate the time? I measure 18 pF for all capacitors. Probably it is wrong because all the part are interconnected? I probably read parallel capacitance of the circuit and this is why it is constant?I don't know much about LCD. I only know that the depth appears a the top rigth corner. The fish, weeds and stuff may be build out of numerous pixel? Besides, the economical price and unchallenging operating mechanism fit the bill for beginners and occasional anglers, especially those running low on budget.

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

The AA32416 IC (on the right corner) is were I choose to invest time for now: I figure out all the IC pin connection and this is were I need your help to go further.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. 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. device for GPS, Fishfinder, Echosounder, Compass and battery indication and all displayed in a color screen! Display features: the sonar fish finder displays water depth, fish approximate location, fish size (small,middle,big), water temperature, bottom contour and so on. the measurement unit can be freely switched in (m/°c, m/°f, ft/°c, ft/°f)

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

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 batteryWave rider motion responsive design: one of the most essential deeper accessories. adjusts by up to 20cm while mounted, allowing deeper sonar to remain on the surface to ensure constant connectivity with your smartphone. 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 found this manual, which implies the picture on the display can be quite rich. It is not clear, though, if those are predefined on the display or are generated dynamically by the MCU out of pixels. trabuccofishing.com portable_ff_e7.pdf Furthermore, you can also switch to wired mode to make it compatible with your chosen fishing type. Depth Capability The HT is only a seg/com driver. They're sending it pixel data from "the brains of the operation" -- another MCU.