Friday, April 24, 2009
4-wire touchscreen on AVR
YouTube via MusicMiK. Touchscreen interface for his MonoMiK DIY synthesizer.
You can find previous posts featuring MusicMiK here.
"I found this display at one of my usual electronics dealers - the one who specialized in selling industry surplus stuff. This display is available for 6,95 EUR, while neither the touch panel nor the EL backlight are mentioned in the offer, i just suspected the touch panel because the characteristic 4 lines going away in the photo of the offer.
The display uses an LC7981 controller, which is obsolete, but quite okay, the touch panel is a resistive 4-wire touch panel. I connected this via 4 protection resistors to an ATmega88, Port C0-C3, while the software uses those port pins as either digital outputs to provide the voltages or as analog inputs to sample the output of the panel. Quite an elegant and simple design.
Before you ask - Pollin Electronic, order number 120346. Currently, 778 are in stock, i think, the 10 units i just ordered are already substracted :)"
PREVIOUS PAGE
NEXT PAGE
HOME
© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH
© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment
To reduce spam, comments for posts older than one week are not displayed until approved, usually same day. Do not insult people. For items for sale, do not ask if it is still available. Check the auction link and search for the item. Auctions are from various sellers and expire over time. Posts remain for the pics and historical purposes. This site is meant to be a daily snapshot of some of what was out there in the world of synths.