Experiments 5.3: 8x8 LED Dot Matrix Display Tutorial (Red/Green Common Anode) using the Arduino
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13 سال پیش
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In this video a 2
In this video a 2 Colour (red/green) 8x8 LED Dot Matrix Display circuit is developed that uses three 74HC595 ICs to drive the rows/columns and a darlington transistor array (UDN2981A) to source the current. An Arduino is used to provide the serial data and the source code is presented to show how this was achieved. The display is a common anode display and the experiment spends time examining the current constraints, explaining why we require transistor arrays to source or sink current. This experiment is a part of a module on an introduction to Digital Electronics at Dublin City University, which can be viewed at: www.eeng.dcu.ie/~molloyd/ee223/
13 سال پیش
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