LCD parallel driver using Pico PIO

RE: LCD parallel driver using Pico PIO

jdkeys — Fri, 03 May 2024 00:17:26 GMT

Thanks BigG. Your work here guided me through the process of successfully connecting a Winstar 1602A to a pico using TinyGo.

RE: LCD parallel driver using Pico PIO

BigG — Mon, 26 Sep 2022 16:32:30 GMT

Came up with a quick fix for the Newhaven Display row order issue... involves a little test at setup and some manual intervention using a micro switch and 1 GPIO.

[View:/cfs-file/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-ca5d86ab-478a-468e-bfd7-c1183d09a223/FixingRows_5F00_NHD20x4.mp4:640:360]

RE: LCD parallel driver using Pico PIO

shabaz — Mon, 19 Sep 2022 12:52:00 GMT

Nice looking display! I think the voltage issue is being caused by the logic levels, since you're driving from Pico (i.e. 3.3V logic levels), whereas the display has 0.8 * VDD as the high level. So, by reducing the supply voltage, the logic levels are moving into a range that is working for you. It's a bit annoying that this display's logic levels are not 3.3V-compatible at 5V supply, especially as the yellow OLED quality looks awesome.