So right now I’m putting together parts for a project I’m working on. Which requires a small touchscreen.
I’ve got 3.5 hyperpixel touchscreen and it is by far the best touchscreen for its size I’ve seen but there’s one rather substantial problem.
It eats up the entire set of GPIO pins on the Pi. It’s not even that it just sits on them it seems to actually use all of them. This means you pretty much can’t do anything else with the pi unless its USB based.
So I’m wondering if there’s a way around this problem.
I have another touchscreen slated for another project of mine and it connects to the Pi via the HDMI and USB ports.
Anyone know if theres any way to achieve something similar with the hyperpixel screen?
If Pimoroni took it upon themselves to build some manner of conversion kit for their screen I’d be quite happy to pay 10 or 20 pounds for it.
I don’t think there is anyway around it other than using another display. A PiTFT maybe that also plugs into the GPIO, but doesn’t use all the pins / resources.
You pay a price for the performance of the Hyperpixel. Its how it gets the high FPS and the color depth etc.
You posted you had the 3.5 Hyperpixel so thats why I posted the link to the PiTFT. ;) I think 3.5 is the biggest one? I didn’t see anything bigger on the actual Adafruit Site. They have this 5 inch HDMI with touch, https://www.adafruit.com/product/2260 I had one and found it Ok. the HDMI going out the side was a bit of a pain with my setup. It was also a bit small for what I wanted so I replaced it with the official Pi foundation 7 inch touch screen.
Other than being a bit easier to damage I like the resistive touch over the capacitive touch. Pretty well any stylus will work. Thats lets you use a nice fine tip stylus, a bonus on the smaller screens. My fine tip stylus with a Teflon tip won’t work on a capacitive touch screen. =(
I’m in Canada, I’ve ordered direct from Adafuit and Pimoroni. And they both sell some of each other stuff. Thats saved me from having to do two separate orders a few times.
To reveal a touch more about the project. I’ve won one of those pipboy kits thats coming out for the new fallout game. And having watching a video of one being put together I’m fairly convinced I can take one, stuff a pi in there and make it somewhat functional.
Mostly just to see how it turns out.