I have designed a board based on an ATmega2560 chip and I burned the bootloader by following this tutorial.
Now I am able to load Blinky and other programs using an FTDI cable. But the issue I am facing right now is the controller runs Blinky fine if I leave the FTDI connected there. If I disconnect the FTDI cable and power-cycle the board it is not running Blinky. If I connect the FTDI, right away it starts blinking.
It looks like something is wrong with my RESET pin connection? Here is what my RESET circuitry looks like:
- I also have tried by removing D1 diode but no luck !