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PicOClock an expensive way to tell time using a PIC16F84A

I know most of you guys have already seen/used/dismantled/damaged an oscilloscope, well for me the oscilloscope is the rectangular box with a small TV screen with green curves that we use in the laboratory, to have a clear description of the oscilloscope I checked wiki – and it says: “An oscilloscope is a type of electronic test instrument that allows observation of constantly varying signal voltages, usually as a two-dimensional graph of one or more electrical potential differences using the vertical or ‘Y’ axis, plotted as a function of time.” Bruno Gavand got this neat idea of using his high tech scope to display time by using a PIC16F84A microcontroller. Using four resistors configured to operate like a 2bit R-2R DAC Bruno could control the Y-axis of the scope’s plot while using pulse width modulation on the trigger line to control the timing. By using both timing and Y axis controls together Bruno was able to display numeric values in a scope. It also comes with two push buttons, one for hours and one for minutes. Talk about expensive way… Continue reading