Old Nokia 1100 LCD and Arduino, Bitmaps and Real Time Waveform Display

Hooking up an Old Nokia 1100 LCD 96x65 pixels (PCF8814 LCD driver) and Arduino Uno for tests with Bitmaps rendering and Real Time Waveform Display. As Not Jordan Peterson says, it is not an oscilloscope by any stretch of the imagination, but it can show us some low frequency control voltage waveforms (Low Frequency Oscillators, ADSRs and other CV signals). A simple front end circuit to keep Arduino's analog inputs happy when displaying 20Vpp signals is shown (I've mounted it on a protoboard)

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Thanks for watching. ... https://www.youtube.com/watch?v=8Zz2h9RuTeA