On 07.12.2012 13:20, Edzard Egberts wrote: >>> The main problem would be the pcb and the keys, for controller today I >>> would use one of them http://arduino.cc/en/Main/Products (for little >>> amount of pieces) - they are very easy to program (C++!), so there is no >>> "controller development" to do. >> >> Thanks for this info. If we can't find a complete solution, I would >> also consider building an own device, but that is probably not what >> my customer (a software development company) want to do. However, if >> it was possible to find someone who builds a case with the keys and >> puts the controller inside, then ... maybe. > > Every engineering office using microcontrollers should be able to do > this for you - it is a "just to do thing", nothing special. It's a > standard problem to design special keyboards for devices, e.g. plastic > foil keyboards. But for your application you should use single keys, > because they are more tactile and durable.
Thanks, I'll check this if it comes to building an own device. > Anyway - did you think of keyboard beeps for distinguish blind > keypressing? This is also a thing, a microcontroller could do for you > (okay, much sophisticated). Nothing I's like to do in the keyboard itself. Maybe the software could do it (IIRC, the sudoku demo has cross-platform sound). > And regarding to the software development company - selling own hardware > saves a dongle. ;o) Hmm, that's not a point here. The software is server-based, and this part is just a micro-addon for special cases ;-) >> Do you know whether there are better ways to >> do it, maybe with a direct USB driver and an API that makes it more >> "direct" to use the key presses? > > Most of the USB solutions create a virtual RS232 port for communication > to software. Also the Arduino does - there is a usb connection, but you > can access it as a serial device. Okay, as long as no serial input in the PC is needed, that would probably work, although it would be easier with a direct keyboard emulation (like U-HID, see other post), since this would probably work cross-platform easily. Anyway, thanks for all the useful and creative help so far from all posters! Albrecht _______________________________________________ fltk mailing list fltk@easysw.com http://lists.easysw.com/mailman/listinfo/fltk
