This video covers the Control board for HD44780 based LCD modules for RC2014 Z80 retro computers, allowing either a 2x8, 2x16 or 4x20 LCD display to be controlled either from Basic or Z80 Assembly.
I'm not employed by, or sponsored by, any of the companies mentioned in this video.
Other videos in this series, on YouTube, can be linked to from here
https://gsfsoftware.co.uk/PBTutorials/Hardware.htm
Useful links
https://z80kits.com/shop/lcd-driver-module/
https://rc2014.co.uk/modules/lcd-driver-module/
https://8b8bf43264c2f150841a.b-cdn.net/wp-content/uploads/2024/05/HD44780.pdf
Music by https://www.ghosthack.de/