Programmable calculator on Pico DIY

Author	Message
zeitfest Guru Joined: 31/07/2019 Location: Australia Posts: 675	Posted: 02:01pm 08 Jul 2025         Quote   In case the whole LCD can work from 3V3 you can remove the 5V I did try running the (old) lcd on the 3.3v, but there was no visible output. Some modules will display OK on the 3.3v apparently but others not. The backlight led is ok on 3.3v, and the processing might run,  but the glass logic levels need more juice.