PiTone-v2-by-Eddy71 Has anyone on here built this ?

[David_1]

I am testing a pcb out on the bench with a 12volt power supply and a 3,3v regulator on the pcb, it works just fine, but taking outside might present some problems

[Carl-NC]

Using DIP parts will severely limit your choices. Have you tried the MC34063? Did it produce the correct output voltage?

[sbalio1]

Friend eddy i have DIP PCB WITH LARGE MC34063 AND TL072 AND PIC16F1824 . NOT SMD . I HAVE less component smd .

[Eddy71]

An MT3608 or similar can be used.

[sbalio1]

Ok friend . Is there enny cercuit i can use instead MC34063

[Eddy71]

The MC34063 is very noisy. I think this is going to be a problem. Unfortunately, I don't have the opportunity to do the hobby and draw a new board at the moment.

[sbalio1]

Hi eddy the s2nd led who blink in may dip pcb not first and the sound . Bat i ask about MC34063 if i can use it . Ihavent get all smd component. I just work with dip pcb . Can you make new pcb DIP .

[Eddy71]

bat the same problem one led blinking and sound. is there enney answer for that

My circuit does not include the MC34063 because it is very noisy in operation - this reduces the sensitivity of the device by many times raising the trash threshold.
But the first pass of the flame only checks the current through the coil.
You have to check +12v power supply, resistors R1,R5,R9,R13,R14, transistors T1 and T2

[Eddy71]

But are you saying it's a mistake because it will work better on a battery ?

Interference through the transformer from the mains causes noise at the amplifier output and therefore the sensitivity of the instrument has to be reduced very much. Normal sensitivity is achieved with battery power

[David_1]

hi david and eddy sorry i mean this image about MC34063 I MAKE THIS board https://www7.0zz0.com/2023/02/03/20/787175161.jpg
bat i try oreginal MC34063 AND im using many cercuit tl082 tl072 jrc082 jrc4558 lf412 lm358 MC602 i change irf740 to irf840. i put coil 20cm
0.35MH = 350uh bat the same problem one led blinking and sound. is there enney answer for that

"Accordingly, if there is a fault during the first scan (voltage converter, coil, battery, wires), the first LED blinks,"

you need to work which bit is wrong ?

[sbalio1]

hi david and eddy sorry i mean this image about MC34063 I MAKE THIS board https://www7.0zz0.com/2023/02/03/20/787175161.jpg
bat i try oreginal MC34063 AND im using many cercuit tl082 tl072 jrc082 jrc4558 lf412 lm358 MC602 i change irf740 to irf840. i put coil 20cm
0.35MH = 350uh bat the same problem one led blinking and sound. is there enney answer for that

[spartalian]

??

[David_1]

Bat i see your shema in the first page that you put.

yes, I never built Eddy's detector, mine was always going to be different I have yet to test the MIC2250, but if that does not work, I will have to change.
I drew my own pcb from the start, but in doing so it's all my fault if it does not work correctly
Like so many I enjoy the design part of Electonics. sometimes you have to change your desgn because you failed to understand the way others have shown a working design

I am 100% sure Eddy's desgn is good... mine not yet LOL

[sbalio1]

https://www3.0zz0.com/2023/02/03/11/735837236.jpg

[sbalio1]

Bat i see your shema in the first page that you put.