Provide a quick few words about the ending to the stop module of this car. My other classmates have completed the first two sections of my as shown below:
Start Module
The start module is located at the beginning of the timer circuit. The IR LED is connected at the output pin of the 555 Timer. When the circuit is connected to the power supply the IR LED is active and sends out its signal. When the robocar passes the IR LED the signal reflects off it and onto the TSOP4138 receiver. The signal sets the receiver to low which activates the TE pin on the HT12E encoder chip. The TE pin converts the 4-bit data into serial data which is available through Dout. The data from Dout is transmitted to the data input on the RF TX module. The radio frequency is transmitted from here to the RF RX module on the control module to begin the counting.
Display module
The display time counter module starts when the output pin of the 555timer is triggered by the start module . The 555 time then sends a signal to 1 of the 16IC inside the module which starts the timer to start counting which is shown on the 7 segment display.
The timer starts counting from the far right first 7-segment display and once that one reaches 9, the second or middle 7-segment display is trigger through its own 16IC and the timer starts counting on that as well until it reaches 9 again and moves to the last one which is on the far left hand side.
When the stop module is triggered, it sends a signal back to the display module to stop the time whenever its trigger to stop the 7-segment display from counting and the time shown is when the clock or display stop is the time taken to complete the race.
Sample Solution
