The working of the micro-controller was explained above in the coding section. Now, the output from the micro-controller is sent to IC ULN2003A. It is basically a transistor array and is used for giving proper signals to the relays. It inverts the output. The signal is then transmitted to the relay which drives the respective motor.
The following flowchart explains the complete working-
The following flowchart explains the complete working-
Animation-
Model-
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