E
eden
- Jan 1, 1970
- 0
I posted about this circuit
[http://www.captain.at/electronics/atmel-programmer/atmega16-programmer.png]
some months ago. Back then I thought I cleared all mysteries, but it
seems I still have some problems.
I have put together all parts, but using uisp program I can't see the
ATmega16 chip, so I guess I must have wired something wrong.
First, I realize that I used wrong capacitors for C3 and C4, instead
100n I took 10n. Could this be the problem? If I measure the voltage
after IC2 it seems correct.
Second, I wonder now, do I have to put some GNDs together, like the one
near C1 and C2 with the one near C3? And maybe also the one coming out
from pin 11 from IC1?
When I asked first time about the circuit, I was confused by the 3 VCC
symbols, and then most agreed that they all should be joint, and I did
that?
Do somebody see some catch here, what could I be doing wrong?
Thanks for any help.
Goran
[http://www.captain.at/electronics/atmel-programmer/atmega16-programmer.png]
some months ago. Back then I thought I cleared all mysteries, but it
seems I still have some problems.
I have put together all parts, but using uisp program I can't see the
ATmega16 chip, so I guess I must have wired something wrong.
First, I realize that I used wrong capacitors for C3 and C4, instead
100n I took 10n. Could this be the problem? If I measure the voltage
after IC2 it seems correct.
Second, I wonder now, do I have to put some GNDs together, like the one
near C1 and C2 with the one near C3? And maybe also the one coming out
from pin 11 from IC1?
When I asked first time about the circuit, I was confused by the 3 VCC
symbols, and then most agreed that they all should be joint, and I did
that?
Do somebody see some catch here, what could I be doing wrong?
Thanks for any help.
Goran