Homework 6

For this assignment, you will need to find data sheets for the parts below and answer questions from the data sheet.

1. Your kit contains an ultrasonic rangefinder with the markings HC-SR04.
   1. Find the data sheet for this part and submit it with your answers. (5 points)
   2. How long is the triggering pulse on this sensor? (2 points)
   3. Write pseudocode (or otherwise describe the algorithm) for triggering the sensor, waiting for the response, and calculating the distance. (5 points)
2. Your kit contains a relay with markings JQC3F-05VDC-C.
   1. Find the data sheet for this part and submit it with your answers. (5 points)
   2. What is the maximum switching current for this relay? (2 points)
   3. What is the maximum turn off time? (2 points)
3. Your kit contains a relay with markings ULN2003AN.
   1. Find the data sheet for this part and submit it with your answers. (5 points)
   2. How many channels are available on the chip (note: not all of them are accessible on the board, give the number in the chip itself)? (2 points)
   3. What is the maximum input voltage? (2 points)