Newhaven 4x40 LCD, issues!

[Christopher4187]

No worries. I'd prefer someone be too energetic to help than not help at all.

[jmgelba]

I have a Newhaven display here with the ST7066U driver. It doesnt work, nor did its replacement. I then went to an Optrex and plugged it into my connector, and it worked right away. Coincidence? Either way, could you guys confirm that a ST7066U driver works?

Thanks.

[MOUNTAIN747]

Jmgelba,
Just a suggestion, try using the above Newheaven_4x40_Text Code.txt , INIT_LCD rutine and its sub’s, EEPRON, and E1 variable. This routine is for a duel ST7066U so you should only use Command1 in INIT_LCD. After initializing the LCD, all PBP commands should work. As stated in above post’s Vo adjustment must be made to find the sweet spot to display. Good luck!

Wayne