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DIY Stompboxes => Building your own stompbox => Topic started by: mth5044 on May 23, 2015, 10:07:38 AM

Title: New Touch Screen at Sparkfun
Post by: mth5044 on May 23, 2015, 10:07:38 AM
Datasheet makes it look like something similar to a joystick, two potentiometers on two axis, but in a touchscreen format. Like a big, two dimensional membrane pot. I'm sure some better brains could find it useful in some projects!

https://www.sparkfun.com/products/13631?utm_source=SparkFun+Customer+Newsletter&utm_campaign=f4a06cb31d-May22_newsletter&utm_medium=email&utm_term=0_fa5287abaf-f4a06cb31d-61482901
Title: Re: New Touch Screen at Sparkfun
Post by: Puguglybonehead on May 23, 2015, 11:49:30 AM
Could be useful for onboard effects if the current consumption is low enough. (haven't read the specs yet) If you could use it to control multiple parameters on something like a delay or a flanger or a Gristleizer then it could be mad fun. Mounted somewhere near the tailpiece on a guitar, so it's reachable but you won't touch it accidentally. Hmmm...
Title: Re: New Touch Screen at Sparkfun
Post by: PRR on May 23, 2015, 04:09:57 PM
"Backorder"; however the site in the datasheet seems to be abandoned ("domain may be for sale").

> if the current consumption is low enough

I suspect they are very high impedance, maybe 100K+. The intent is to read them in a 3-cent ADC such as in a $2 PIC or GameBoy brain, and that does not need real power.
Title: Re: New Touch Screen at Sparkfun
Post by: mth5044 on May 23, 2015, 04:36:53 PM
Quote from: PRR on May 23, 2015, 04:09:57 PM
"Backorder"; however the site in the datasheet seems to be abandoned ("domain may be for sale").

Weird, it was just the headliner of their newsletter.
Title: Re: New Touch Screen at Sparkfun
Post by: samhay on May 23, 2015, 04:38:50 PM
Resistive touch screens have gone out of a fashion - I suspect most/all contemporary mobile phones use capacitive screens now, so this technology is on its way to becoming mojo. That said, a search of "4 wire analog resistive touch screen" finds at least one on ebay for sensible money.
While it could certainly look cool, not sure if the enclosure real estate is best used this way if it is only used to replace the function of 2 pots.