Sorry about the font, i just want to highlight the message. No other intention.
Actually, i tried to hovering around 0.5v but i just could not get the display.
I experimented from 0-1v paying extra attention when nearing 0.5v.
The reason why i am posting here is because i followed the requirement given by the tutorial, but still it could not
display " hellow world ", even with the 10k potential meter.
Thats why i am very clueless now. The best display i can get is just blocks that appear during initial power up and after
5-10s fades away.