Pinpointer with discrimination "Cat-FM" on ATMega328P

[useus]

PCB 1.2 grb+pdf
size 30x92 mm

CAT-FM PCB 1.2.rar

[void118]

thank you! i would say we are ready to build pcb!

You are welcome)

[zakari]

hi
how this circuit discriminate?with voice of buzzer?because in the schematic there are the leds but there isnt any led in the pcb
void 118 can you explain ?in the schematic atmega has 32 pin but in the pcb has 28 pin?
best regard
zakari

[void118]

hi
how this circuit discriminate?with voice of buzzer?because in the schematic there are the leds but there isnt any led in the pcb
void 118 can you explain ?in the schematic atmega has 32 pin but in the pcb has 28 pin?
best regard
zakari

Hi, about discrim. look at the video please, In short - voice and LED's, for best understanding I recomend you to read schematic cearfully, you will find there two LED's but someone dosn't need them and sounds Is enough for them. ATmega328P In TQF32 enclosure has 32 pins, but In DIP only 28.

[void118]

Friends,

I've made new video but I have no Idea when youtube will add subtitles to It.
https://youtu.be/phZfdfi7Wio

[MartyJ1963]

Thank you Void118 and Useus. Does anyone know where I can find a diagram to make a new Atmega328P target pcb please? I programmed my first Atmega328P with the V1. Hex and it programmed OK. But when I came to use my target pcb to re-program it for the new External button Hex it couldn't recognise the Target IC. I may have to build another target pcb for my USBasp or is there another method I can use to program the chip? Thanks again guys, regards, Marty.

[MartyJ1963]

@Void118. Great work on the latest video! and many thanks for all the necessary information you included. It was very kind of you to offer this interesting project. The subtitles have not been added to your youtube video yet so I will download it again later. Thanks again, Marty.

[void118]

Thank you Void118 and Useus. Does anyone know where I can find a diagram to make a new Atmega328P target pcb please? I programmed my first Atmega328P with the V1. Hex and it programmed OK. But when I came to use my target pcb to re-program it for the new External button Hex it couldn't recognise the Target IC. I may have to build another target pcb for my USBasp or is there another method I can use to program the chip? Thanks again guys, regards, Marty.

Hi Marty, tell me please did you program "lock bits" or not?, I dont't recomend to touch In, second Idea, may be you set "Reset Disable" bit?, It can lock MCU from programming via SPI too. Anyway, first - check connections, second - try to erase chip, and use "eXtreme Burner" utility to make the process easier.
Or may be you confused low and high bytes?

See In attachment fuse bits for AVRDude, and download nice utility I sad before.

"eXtreme Burner"
https://drive.google.com/file/d/1ZYfU81vVVEhajylHBZ_r0KQclQl-xTvK/view?usp=sharing

fuse bits for AVRDude:
https://drive.google.com/file/d/17WFF9bvedS9Mx81n2RCXChocCOlb6bSm/view?usp=sharing

[void118]

@Void118. Great work on the latest video! and many thanks for all the necessary information you included. It was very kind of you to offer this interesting project. The subtitles have not been added to your youtube video yet so I will download it again later. Thanks again, Marty.

The problem Is that English not my native language, but I'll ask my brother (hi lives In England) to translate my video or make subtitles for It, but I'm not sure because he's a lawyer

[useus]

a solution to slightly increase the volume of the buzzer?

[void118]

a solution to slightly increase the volume of the buzzer?

What are you talking about friend?, It's very loud, try to use another one, I'm using 12x9 mm passive buzzer

[zakari]

Hi marty
For reprograming use external xtal between 8_16mhz
Best regard
Zakari

[MartyJ1963]

Thank you @Void118 and Zakari, Regards, Marty.

[void118]

However, 655 views of my topic and there Is no stars on It, may be nobody needs It?

[MartyJ1963]

@Void118, I am building another pcb to program the V1.2 Hex with because my other programmer board seems to no longer work. I will post results when I have completed this. Thanks again for the help. Regards, Marty.