I followed this ArduinoToBreadboard and I just added a 5V regulator just to be on the safe side.
So my questions are:
- When I connect a Nokia LCD 5110 to the DIY arduino, nothing really happens but when I take out the AtMega328P-PU chip and place it to the official arduino board the screen works normally, why does this happen? (The pins are connected on the same way, it is not this kind of problem)
- How can I make this DIY arduino to work with a 3.7V Li-op battery? Because the DIY board works only when I power it up with 5 or more Voltage it works perfect, so any ideas?