felezjoo PI(the best pulse induction metal detector that I made until now)

[lc516]

change ic357

do you suspect it's shoddy?
Thanks for the advice!

[ripsdevala]

I have a question about discrimination of felezjoo. How good is iron reject in ground? Do you need double d coil for discrimination as you need with the minelabs.

Can be that the answer is written in one of the 59 sites before.....i dont want to read all sites for now...:-D

Rejection is good, as long not above vulcanic soil or iron sand terrain.

[ripsdevala]

error in pcb made by sprint layout typon 2 and 2 variants of this with isp are shorted [ATTACH]39641[/ATTACH][ATTACH]39642[/ATTACH]

Your R5 still use 10k it should 2.2k

[chafik]

error in pcb made by sprint layout typon 2 and 2 variants of this with isp are shorted

[Prospekteur]

I have a question about discrimination of felezjoo. How good is iron reject in ground? Do you need double d coil for discrimination as you need with the minelabs.

Can be that the answer is written in one of the 59 sites before.....i dont want to read all sites for now...:-D

[basellafe]

ivica about r5 what jop it do

[basellafe]

change ic357

[lc516]

I have created different coil（20cm，40CM ,1*1M cable), all is not working on A300 B700 C800

usually well under A200 B400 C550

I don't know what the problem is.

Who has same problem with me

[samii]

try lf356 and 2n7000.

[qurashimoin]

What is the alternate of LF357N and BS170.

[faycel]

why you dont try avrdudes its perfect with atmega ihave programed with it several time with no problem i use arduino isp

arduino isp and atmelstudio is the best

[basellafe]

Thank basellafe for your help.
Meanwhile I have understand by myself: the two chips was not bricked; there was missing the quartz on my programming breadboard!
In fact, with original fuses setting, the Atmega works with internal oscillator but when I have wrote new fuses setting I tell it to use the external oscillator --- without --- having the quartz!!! ARGHHH!!!
I add the quartz and now everythings is OK!

[Altair]

why you dont try avrdudes its perfect with atmega ihave programed with it several time with no problem i use arduino isp

Thank basellafe for your help.
Meanwhile I have understand by myself: the two chips was not bricked; there was missing the quartz on my programming breadboard!
In fact, with original fuses setting, the Atmega works with internal oscillator but when I have wrote new fuses setting I tell it to use the external oscillator --- without --- having the quartz!!! ARGHHH!!!
I add the quartz and now everythings is OK!

[basellafe]

why you dont try avrdudes its perfect with atmega ihave programed with it several time with no problem i use arduino isp

[Altair]

Hi,
I tried to program atmega 328p with AVR Studio 7 and AVRISP MKII programmer but I have some problems with fuses bit!
These are setting I used:
- Low fuse: F7
- High fuse: D1
- Ext fuse: FC

After writing fuses, the atmega is not more recognized from the programmer; it' seems to became bricked!
Already two chips are dead on my hands until now!

Are there someone who has used AVR Studio 7 with success? How?