apologies if this is not the relevant section, it seems the most appropriate to me.
I have written a sketch for an ATtiny85 which displays some test in a 128x64 I2C oled.
When using the Tiny AVR Programmer, everything works fine, text is displayed correctly.
Now I want to make the whole setup permanent, so I thought about moving it to a PCB, but, before doing that, I wanted to test the setup on a breadboard, powering the tiny and the oled with a 3v cr2032 coin cell battery.
The setup is shown in the picture in attachment
Using this setup, the display doesn’t show anything.
I know the tiny works fine, because I have attached an LED which is turned on at startup and it is powered properly.
Can anyone point me in the right direction on what I am doing wrong?
Thanks in advance!