Description

IMPORTANT: LAB CAPACITY

● Only students enrolled in this lab section should be present here
● If you lie about being enrolled in this section, you will be REMOVED from the course
○ Please be ready to show either CalCentral enrollment or an email confirming a switch.
Semester Outline
Imaging Touchscreen Locationing
Module Module Module

Why Imaging?

● Use linear algebra techniques to capture real world images with limited sensors
● Today:
○ Finding a link between physical quantities and voltage
○ If you can digitize it, you can do anything (IOT devices, internet, code, processing)
Today’s Lab: Imaging Part 1

● You should have received lab materials (TI MSP430F5529 + lab kit)
● Circuits + Breadboarding 101
● Build circuit that reacts to light intensity
○ Use Launchpad to see how the circuit behaves ● Graded checkoff starts today!
○ Make sure you don’t miss Img 2 or Img 3

A Little Physics: Voltage, Current, and Resistors
● Voltage [Volts] – pushes charge through circuit
● Current [Amps] – flow of charge through circuit
○ 1 Amp = 1 charge per second
● Resistor [Ohms] – circuit component that resists the flow of charge through circuit Simple Circuit: The Tools™

● Components
○ Resistors
○ Capacitors ○ Voltage Source
● Wires / Jumpers [male-to-male vs male-to-female]

It’s a type of resistor whose value can change depending how much light there is around it!
Direction matters!

Equipment for Today: Wires/Jumpers

Simple Circuit: The Theory

● Components
● Nodes
○ Point in circuit where circuit elements meet
○ Wire between components are considered part of one node
● We know you don’t know much about
circuits yet; we’ve given you very detailed instructions on how to build the circuit in the lab

Simple Circuit: The Theory™

● Components (Resistors, LEDs, Capacitors)
● Nodes
○ Point in circuit where circuit elements meet
○ Wire between components are considered part of one node
What components?
How many nodes?
Where are these nodes?
Simple Circuit: The Theory™

● Components (Resistors, LEDs, Capacitors)
● Nodes
○ Point in circuit where circuit elements meet
○ Wire between components are considered part of one node
What components?
Voltage source, resistor
How many nodes? 2
Where are these nodes?
Simple Circuit: The Theory™

● Components (Resistors, LEDs, Capacitors)
● Nodes
○ Point in circuit where circuit elements meet
○ Wire between components are considered part of one node
What components?
How many nodes?
Where are these nodes?
Simple Circuit: The Theory™

● Components (Resistors, LEDs, Capacitors)
● Nodes
○ Point in circuit where circuit elements meet
○ Wire between components are considered part of one node
What components? Same How many nodes? 3
Where are these nodes?
Breadboard

Breadboard

FAQ

● Lab notebook link is on course website
● Keep voltage source leads from LaunchPad to breadboard disconnected whilst building your circuit
○ Female ends can stay connected to the LaunchPad
● Make sure you are using the correct resistors (Brown Black Yellow Gold for light sensor)
● Make sure your ambient light sensor is in the right direction
○ You must each build your own setup and answer all questions in your own notebook
● DON’T LEAVE/PACK UP YOUR CIRCUIT WITHOUT BEING CHECKED OFF FIRST