Beachmaster Files

[lxs17757414132]

I want to search for treasures in deeper places. Can beach owners discover deeper coins? Salute

[Olly]

The motherboard was not debugged, and I detected an ancient coin at 12 centimeters

Very nice find, was that detected with the Beachmaster?

[lxs17757414132]

The motherboard was not debugged, and I detected an ancient coin at 12 centimeters

[lxs17757414132]

Thank you, Master Oliy for your support

[lxs17757414132]

I have completed the beach dock, but due to my oscilloscope being broken and the new one still on my way home, I stopped working and waited for the debugging to be completed

[Olly]

Is SW1 also equipped with a switch? What is its purpose?

SW1 is the Power On/Off switch. SW2 is for pinpointing. (See section 2.5 and especially read section 3.8.2 of the 'build' document.)

[lxs17757414132]

Is SW1 also equipped with a switch? What is its purpose?

[Olly]

I want to increase the power of the board. Will the depth increase? What should I do

I wouldn't recommend going much higher in voltage than 3 x 18650 Lithium Cells. (12.6V fully charged).
Detection depth increases very, very little with more power I'm afraid. This is a fact with all metal detectors, not just this one.

[lxs17757414132]

I want to increase the power of the board. Will the depth increase? What should I do

[lxs17757414132]

My R6, R7, and R8 haven't arrived yet. Cheers up

[Olly]

My project is about to be completed, and my oscilloscope is broken. It will take a few more days to arrive, R2, I saw that you discussed using a 1m5 resistor, as it was not indicated in the schematic diagram. What is the maximum supported coil size of 1 * 1m at the beach dock

R2 is not normally fitted, but you can use it to fine-tune the frequency when POT1 is in its center position if you wish.
The system doesn't care what physical size your coil is, just keep it to somewhere around 300uH to 500uH and it should be fine.

Good luck with the build.

[lxs17757414132]

My project is about to be completed, and my oscilloscope is broken. It will take a few more days to arrive, R2, I saw that you discussed using a 1m5 resistor, as it was not indicated in the schematic diagram. What is the maximum supported coil size of 1 * 1m at the beach dock

[Olly]

R43 schematic DNF, can anyone tell me which part to use for installation

For normal use with headphones R43 is not fitted. (DNF = Do Not Fit).
If you wish to drive a small speaker and the audible volume range is all in the final 1/4 turn of the Volume pot, then you can experiment with fitting R43.
I would start with a 1K resistor and see how that goes.

[pito]

just add LM386

[lxs17757414132]

R43 schematic DNF, can anyone tell me which part to use for installation