Pinpointer with discrimination "Cat-FM" on ATMega328P

[void118]

Cat_FM v.1.4 fast Init +high sense:
https://drive.google.com/file/d/1hrM...ew?usp=sharing

[void118]

"Cat-FM" New Revision 1.5

Friends, here Is new revision of "Cat-FM" firmware v.1.5

1. After uploading firmware, default sensetivity 2.
2. We have 3 levels of sensitivity.
3. New value of sensitivity stores In MCU.
4. Short button press -> recalibrating device.
5. Long press (more than 0.5 sec) -> turn device to sensitivity setting mode.
6. Short press In sensitivity setting mode Increase sensitivity by one and you will hear number of current setting.
7. Long press In sensitivity setting mode return device to normal mode.
8. 0 - lowest sensitivity, 3 - highest sensitivity.
9. recalibrating speed Increased two times.

v1.5_pre_release:
https://drive.google.com/file/d/1lNbU3C4arMsDMjcgZmZQ9NGJ7Hv5GRHY/view?usp=sharing

v.1.5.1_stable:
https://drive.google.com/file/d/1yiB...ew?usp=sharing

[MartyJ1963]

Thanks Void118 for V.1.5.1 , Regards, Marty

[void118]

Thanks Void118 for V.1.5.1 , Regards, Marty

You are welcome), try It please and leave some feedback..., It's very Interesting...

[void118]

My pcb design for Arduino pro mini board, If you are Interested I will public It.

[useus]

Finished and working! Thanks void118
Today I try firmware 1.51 and build definitive coil



note the crystal sideways, like the hole I made

[void118]

Finished and working! Thanks void118
Today I try firmware 1.51 and build definitive coil

note the crystal sideways, like the hole I made

Congratulations my friend!

[void118]

New video on my channel related to PCB design and some things about second revision.
https://youtu.be/67yV1IAClt0

[useus]

the circuit works but there is a problem, the buzzer heats up a lot and, approaching it to the ear, it hums slightly, so I checked the amperage of the circuit, result 700ma.


disconnecting the buzzer the circuit consumes 28ma.


obviously I'm using the passive buzzer that I have available, but something is not right. a help?

[void118]

the circuit works but there is a problem, the buzzer heats up a lot and, approaching it to the ear, it hums slightly, so I checked the amperage of the circuit, result 700ma.

disconnecting the buzzer the circuit consumes 28ma.

obviously I'm using the passive buzzer that I have available, but something is not right. a help?

Hi, check your PCB, my circut consumes 15mA In silent, and 29 mA when detecting target.

It looks like short circuit In the board.

[useus]

Hi, check your PCB, my circut consumes 15mA In silent, and 29 mA when detecting target.

hi, the circuit is checked and is fine, probably the 28ma I measured were during the measurement, I had the multimeter near

[void118]

hi, the circuit is checked and is fine, probably the 28ma I measured were during the measurement, I had the multimeter near

Thus, the problem Is In your sound circuit, try to connect simple 16 Ohm speaker without 1k In parallel.

[void118]

Look, In silent mode , when device don't see target, sound transistor Is strongly closed, and It opens with PWM pulses when target comes up, If your buzzer Is not working correctrly, we can see short circuit effect. Show your buxxer please.

[void118]

Check your pizeo buzzer with multimeter please, It must behave like capacitor but not like resistor.

[useus]

with detached buzzer 28ma without detection
30.5ma with detection
with connected buzzer 700ma without detection
800ma with detection

the buzzer on the capacitor marks me 47uf and 45 ohm on resistance

however the buzzer is passive, powering it directly does not emit any sound