Hello!

The programmer works fine, but before the software read or write the microcontroller, it does a basic check of the hardware. It try to push some data through the 74HC595 and the 74HC157 and read it back. When the programmer seems to work not correctly, the message "...please check power supply and connections..." appears.

When you are certain, that you have built the programmer layout correctly, please try the following:
- Goto the software options and deselect the option "Check programmer before access".

Regards,

André Bauer
http://Batronix.com