Circuit Ideas I Electronic DIY Projects I Robotics
Circuit Ideas I Electronic DIY Projects I Robotics
Simple 20 LED Bar-Graph Voltmeter , each LED display 0.25V, this circuit can measure 5V directly or its can measure higher voltage range using resistor divider. Example circuit for resistor divider. If choose Z1=10K and Z2-10K it can measure 0-10V. Turns on a series of LEDs based on the value of an analog voltage input. This is a simple way
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The Project is based on 20 Segment Bar Graph (2X10 LED PCB), Arduino Mega and LDR, The project converts darkness into a number of LEDs, number of LEDs will glow proportional to darkness falls on LDR. The circuit works with 12V DC and draws 4 Amps while all LEDs are ON. Digital pin D22 to D41 of Arduino used to
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Simple 20 LED Segment Bar-Graph Voltmeter , each LED display 0.25V, this circuit can measure 5V directly or it can measure higher voltage using resistor divider. Turns on a series of blue LEDs based on the value of an analog voltage input. This is a simple way to make a bar graph display. Though this graph uses 20 LEDs,
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