2021-11-12

Hardware you should have by now:

  • SG90 servo (handed out on day19)

  • EN12-HS22AF20 rotary encoder + switch

  • HC-SR04 ultrasonic range finder module

  • 5.5x2.1mm barrel connector pigtail for AD2 aux power input

  • Infrared remote

Pick up today (section A, B got these day27):

  • IR receiver

  • AAA batteries for IR receiver

More stuff:

  • extra thingies for your project 4

Future:

  • ATtiny85 MCU. Next week!

1. UART decoding

day28_uart-capture.csv

Download and open the above file. It is a CSV file with two columns:

  1. Sample time

  2. Logic value

The file is a capture of a UART transmission of several packets. Each packet uses 8 data bits, No parity, and 1 stop bit (8N1).

  • What is the baud rate? (symbols/second)

  • Decode the transmission to determine the bytes (hex values).

  • Decode the data assuming the bytes were encoded in ASCII (https://www.asciitable.com/)

2. Project 4

Moved to: https://agnd.net/valpo/322/proj4.html

ece322-proj4