SX Microcontroler based Keyboards

• The PIC Source Book - Button (the second version of the program is in Parallax code; easy to use on the SX)
• SX Microcontroler based Matix Keyboards
• Michael Hetherington's USB Keyboard demo
• George F. Hotz's PC Keyboard tester
• PC keyboard and mouse interface (via SX28) to the Play Station 1

Vertual Peripherals:

• Push Buttons & Path Switcher: This application note presents programming techniques for implementing and debouncing from 1-4 push buttons. This implementation also demonstrates the use of a path switcher (combined with a simple real-time clock ) to reduce the execution time of each interrupt.
  • Source: buttons_vp.src
  • Application Note: buttons_vp.PDF CSS HTML
• 4x4 Keyboard Scan: This application note presents programming techniques for scanning a 4x4 keyboard usually found in both consumer and industrial applications for simple numeric data entry.
  • Source: keyscan.src
  • Application Note: PDF CSS HTML

Integrations:

• 8vp.src: Push button detection and debounce, two 8-bit A/D converters, 19.2kbaud UART, two PWM outputs, one I2C serial link for EEPROMs, two 16-bit independent timers, Time clock (keeps count in msec), and a software execution path switcher. SX Demo Enhanced 2.0 by Craig Webb of Parallax Inc.

Keyboards@ PIC Keyboards@

Under construction:

• Tony Kubek's pickbd2 PC-Keyboard emulator{Ed: the code has been translated to SX and optimized but not tested}

Interested: