How do I exchange LCD display with 7 segment LED's
To convert this for driving your 7 segment LED display, you could use a diode (may need a schottky if drive voltage is low) feeding an RC low pass filter (cut off < 30Hz. Something like 1kΩ and 10uF would do) to derive a DC voltage, then use this to drive the base of a transistor that controls the segment of your display (assuming common anode display with NPN on cathodes)
7 Segment Common Cathode LED Digit Display Circuit for
For the first time I am going to make a digital clock with 7 segment displays with Arduino Multiplexing. I am about to use the following circuit to run 4 large Common Cathode 7 Segment LED Digit Displays. The circuit diagram shows only 2 digits with 4 of their anode pins connected. Hope you understand the full schematic from this diagram.
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