Project Description: Utilizing the 8x8 dot matrix display the smile face and then rotate the face 90...

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Question

Electrical Engineering

Project Description:
Utilizing the 8x8 dot matrix display the smile face and thenrotate the face 90 degrees at a time until the face is back to theoriginal position. The face can be rotated clockwise or counterclockwise. Place a 1 second delay for each 90 degree rotation.
Provide pictures of the smile in each position
Provide the following:
Code listing.
Electronic Parts used:
8x8 dot matrix
Resistors (recommended butoptional)
Â Â Â Â Â Â Â Â Â Â Â Â Â
Electronic pictures of your setup.
Schematic of circuit.
d. Hand in project both electronicallyand hard copy.

Answer & Explanation Solved by verified expert

4.1 Ratings (840 Votes)

Step 1 Things Requiredfor this project you will require 1 1 LED matrix2 8 resistors 1k ohm3 8 557 transistors4 1 ULN2803 IC5 Arduino6 2 74HC595 shift register7 2 Bread board8 Connecting WiresStep 2 WorkingDot matrix units typically come in either a 5x7 or 8x8 matrix ofLEDs The LEDs are wired in thematrix such that either the anode or cathode of each LED iscommon in each row In other words in acommon anode LED dot matrix unit each row of LEDs would haveall of their anodes in that row wiredtogether The cathodes of the LEDs would all be wired togetherin each column The reason for this willbecome apparent soonA typical single color 8x8 dot matrix unit will have 16 pins 8for each row and 8 for each columnThe reason the rows and columns are all wired together is tominimize the number of pins requiredIf this were not the case a single color 8x8 dot matrix unitwould need 65 pins one for each LED and acommon anode or cathode connector By wiring the rows andcolumns together only 16 pins arerequiredHowever this now poses a problem if you want a particular LEDto light in a certain position If forexample you had a common anode unit and wanted to light the LEDat X Y position 5 3 5th column3rd row then you would apply a current to the 3rd Row andground the 5th column pinThe LED in the 5th column and 3rd row would now lightNow lets imagine that you want to also light the LED at column3 row 6 So you See Answer

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