Interfacing display
NickMikhay
Posts: 41
Hello,
Read in another post that there tft/lcd 3.5” in size, available for low cost, with touch capability, from eBay.
Well, I am just wondering if you can interface them with video port on the prop1.
These displays are marked “SPI” but I found that the chips used in this case “ILI??88” can handle many types interface, including RGB. However not sure whether the boards are packed to support all of the modes since there were some pins that didn’t appear to be included, like the data pins D [0..15]
Then there was something I saw for RPi which had a double row connector, but they were a little smaller 3.5”. A half inch can seem so looong. I thought these might do the job, it didn’t see the pins. Has anyone seen or have one of these to tell?
Comments
The SPI LCDs work nicely with P1 and P2. Most of these LCDs use similar chips so the same code works.
https://forums.parallax.com/discussion/159911/color-lcd-driver-for-cheap-1-44-spi-128-128-v1-1-red-and-black-pcbs/p1
https://forums.parallax.com/discussion/173062/p2-quick-byte-320-240-lcd-driver-for-ili9341-controller-and-xpt2046-touch-screen#latest
https://forums.parallax.com/discussion/172881/p2-serial-and-lcd-60x40-text-drivers-using-a-common-formatting-object-and-buffers#latest
Hopefully the boards you're considering include all the required hardware. You want to make sure you're not just purchasing the "glass" without needed hardware.
@Rayman has sold a variety of LCDs.
I have list of links to various display threads here.
As the price of smart devices come down, I often think the best display for a project may well be a smart phone or a tablet. The data you want to display can be sent over Bluetooth and you can then take advantage of the nice screen you already have. Unfortunately, programming a phone or tablet is not nearly as much fun as programming a Propeller.
I use a 2,8" display with resistive touch. It uses the ili9325 chip.
As I remember it, I skipped trying to use the RGB function mainly as I think that it is intended as a "picture in picture" (PIP) function.
In 8bit mode the P1 is too slow for showing full screen video. I think the refresh rate is about 2-3Hz, loading bitmaps from a small SD card.