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ATMega88 programming problem

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nagaya

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i tried to build a SIPROG with this circuit from (AVR Programmer)
avr_programmer_schematic.jpg

avr_socket_pcb.jpg


i used atmega88 with 4Mhz crystal
i'm using ponyprog on win7 and when i probe device it says test ok,but when i try to read device it says "device missng or unkown device"
i checked all connections with multimeter but there is no problem in connectivity too
 

nagaya said:
i tried to build a SIPROG with this circuit from (AVR Programmer)
avr_programmer_schematic.jpg

avr_socket_pcb.jpg


i used atmega88 with 4Mhz crystal
i'm using ponyprog on win7 and when i probe device it says test ok,but when i try to read device it says "device missng or unkown device"
i checked all connections with multimeter but there is no problem in connectivity too
Click to expand...
Thanks a lot bro!finally i found the problem,i just shorted 1N4148 and selected invert reset on ponyprog,it's working well now even in win7 :grin:
 

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