The pages will be stored on disk, I will be in places where there is no cel= l or wifi or any other external data. I'm thinking of displaying a graphic and printing a text file, as in "pageo= ne.png gets displayed for 30 seconds, and while this is displayed, pageone.= txt will print if the button is pushed." I could implement it by always printing the same file name, but copying dif= ferent files into that file name when the new screen comes up. Exact implementation TBD. It's surprising to me how this functionality is absent in most (all?) imple= mentations. -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of= Clint Jay Sent: Friday, January 5, 2018 8:59 AM To: Microcontroller discussion list - Public. Subject: Re: [EE] Digital signage with print button Where are your pages coming from? Simple script trying ggered by a GPIO interrupt to print the page source or= a modified version of it to reflect an internet source perhaps? On 5 Jan 2018 15:28, "Van Horn, David" wrote: Feel free to retag if this isn't engineering enough. I'm looking at digital signage software for the Raspberry Pi, but I need to= integrate a USB thermal printer and a button so that while a given screen = is up, a button press will print out a reminder tag. Tons of options out there, but I haven't seen any that have this simple fea= ture. Have you seen something like this? Any ideas how I could hack it into an e= xisting digital signage package? The part being printed doesn't even need any graphics, just text is fine. Button press performs piping file X to the printer, but when the graphics c= hange, file that prints needs to also change in sync. -- David VanHorn Lead Hardware Engineer Backcountry Access, Inc. 2820 Wilderness Pl, Unit H Boulder, CO 80301 USA phone: 303-417-1345 x110 email: david.vanhorn@backcountryaccess.com -- http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/chang= e your membership options at http://mailman.mit.edu/mailman/listinfo/piclis= t -- http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/chang= e your membership options at http://mailman.mit.edu/mailman/listinfo/piclis= t --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .