1. ELCT 201
week 13
Analog ON/OFF control system conversion to Digital ON/OFF control system

2. (Using op amps and a H Bridge)
Analog ON/OFF Control System
(Using op amps and a H Bridge)
Subsystem 1
Subsystem 2
Subsystem 3
Vin 1
Dead Band
(Window height)
Window
Maker
Window
Comparator
H Bridge
(L298n)
and
DC Motor
U.L.
Forward
L.L.
Reverse
SP = Vin 2
(Window position)
Feedback
Mechanical Linkage

3. (Using op amps and a H Bridge)
Analog ON/OFF Control System
(Using op amps and a H Bridge)
Subsystem 1
Subsystem 2
Subsystem 3
Vin 1
Dead Band
(Window height)
Window
Maker
Window
Comparator
H Bridge
(L298n)
and
DC Motor
U.L.
Forward
L.L.
Reverse
SP = Vin 2
(Window position)
Feedback
Mechanical Linkage

4. (Using op amps and a H Bridge)
Analog ON/OFF Control System
(Using op amps and a H Bridge)
Subsystem 1
Subsystem 2
Subsystem 3
Vin 1
Dead Band
(Window height)
Window
Maker
Window
Comparator
H Bridge
(L298n)
and
DC Motor
U.L.
Forward
L.L.
Reverse
SP = Vin 2
(Window position)
Feedback
Mechanical Linkage

5. DIGITAL ON/OFF Control System
Subsystem 1
Subsystem 2
Subsystem 3
Vin 1
Dead Band
(Window height)
Window
Maker
Window
Comparator
H Bridge
(L298n)
and
DC Motor
U.L.
Forward
L.L.
Reverse
SP = Vin 2
(Window position)
Feedback
Mechanical Linkage

7. Intro to Arduino “Hardy Friend”
Specifically, the UNO
Getting Started
Blink

8. A good first program to download and run/*
Blink
Turns on an LED on for one second, then off for one second, repeatedly.
The circuit:
* LED connected from digital pin 13 to ground.
* Note: On most Arduino boards, there is already an LED on the board
connected to pin 13, so you don't need any extra components for this example.
Created 1 June 2005
By David Cuartielles
based on an orginal by H. Barragan for the Wiring i/o board
This example code is in the public domain. */
int ledPin = 13; // LED connected to digital pin 13
// The setup() method runs once, when the sketch starts
void setup() {
// initialize the digital pin as an output:
pinMode(ledPin, OUTPUT); }
// the loop() method runs over and over again,
// as long as the Arduino has power
void loop() {
digitalWrite(ledPin, HIGH); // set the LED on
delay(1000); // wait for a second
digitalWrite(ledPin, LOW); // set the LED off

9. DIGITAL ON/OFF Control System
Subsystem 1
Subsystem 2
Subsystem 3
Vin 1
Dead Band
(Window height)
Window
Maker
Window
Comparator
H Bridge
(L298n)
and
DC Motor
U.L.
Forward
L.L.
Reverse
SP = Vin 2
(Window position)
Feedback
Mechanical Linkage

10. DIGITAL ON/OFF Control System
Subsystem 1
Subsystem 2
Subsystem 3
Vin 1
Dead Band
(Window height)
Window
Maker
Window
Comparator
H Bridge
(L298n)
and
DC Motor
U.L.
Forward
L.L.
Reverse
SP = Vin 2
(Window position)
Feedback
Mechanical Linkage

11. DIGITAL ON/OFF Control System
Arduino Controller
Subsystem 1
Subsystem 2
Subsystem 3
Vin 1
Dead Band
(Window height)
Window
Maker
Window
Comparator
H Bridge
(L298n)
and
DC Motor
U.L.
Forward
L.L.
Reverse
SP = Vin 2
(Window position)
Feed
back
Mechanical Linkage

12. Conversion topics
Hardware
Software

13. I/O Management Inputs Outputs 2 analog inputs 6 Digital outputs
Setpoint
Feedback
Outputs
6 Digital outputs
1 Forward signal to H Bridge
1 Reverse signal to H Bridge
2 Set Point Display
2 Feedback Display

14. DIGITAL ON/OFF Control System
Arduino Controller
Subsystem 1
Subsystem 2
Subsystem 3
Window
Maker
Window
Comparator
H Bridge
(L298n)
and
DC Motor
SP = Vin 2
(Window position)
U.L.
Forward
Digital Out
Analog Input
A/D (10Bits)
L.L.
Reverse
Digital Out
Analog Input
A/D (10Bits)
Feed
back
Mechanical Linkage

15. DIGITAL ON/OFF Control System
H Bridge
(L298n)
and
DC Motor
Subsystem 3
Forward
Reverse
Mechanical Linkage
SP = Vin 2
(Window position)
Arduino Controller
Feed
back
Analog Input
A/D (10Bits)
Digital Out

16. DIGITAL ON/OFF Control System
H Bridge
(L298n)
and
DC Motor
Subsystem 3
Forward
Reverse
Mechanical Linkage
SP = Vin 2
(Window position)
Arduino Controller
Feed
back
Analog Input
A/D (10Bits)
Digital Out

17. DIGITAL ON/OFF Control System
H Bridge
(L298n)
and
DC Motor
Subsystem 3
Forward
Reverse
Mechanical Linkage
SP = Vin 2
(Window position)
Arduino Controller
Feed
back
Analog Input
A/D (10Bits)
Digital Out