KNLI firmware, for KnurdLight 3
                              31 March 2007

This document describes the KNLI firmware.  It runs on a Microchip PIC
10F204 and controls the KnurdLight LED headlight.  The processor receives
input from a user-controlled pushbutton indicating to turn on and off.  It
directly controls the switching element of a boost switching power supply.
The output of the supply is regulated by monitoring a analog feedback
signal that is compared to 600mV.


Firmware versions

  KNLI 1, 31 March 2007

    First released version.  Seems to work as intended.  The turn on
    sequence is a button press-release-press with each phase being about
    1/2 second.  Any press of the button turns the unit off when on.  The
    boost switcher is run in continuous mode.