lesson 10 (prototype / test + servo or lcd) · slides available at: slide 3 design thinking...
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Slide 1
Lesson 10(Prototype / Test + Servo or LCD)
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Slide 2
Target for Today!
● Design Thinking: Prototype & Test● Learn how to use Servo or LCD
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Slide 3
Design Thinking Process
Empathize Define Ideate Prototype Test
Iterate
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Slide 4
Why Prototype?
● Before mass producing your product, you had better know you have a winning design
● Prototyping – rapidly create a cheap version of your product
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Slide 5
Testing
● Version 1 – some features testable ● Final / Demo – all features testable● A prototype’s worth is in its ability to allow for
testing/demonstration before the final investment
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Slide 6
Refinement & Iteration● No product ever gets made in one iteration
● Testing & Refinement should be expected and built-in
● Always keep a skeptical, critical mindset– Will this actually work?– How can this be improved?– Did I test every circumstance?
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Slide 7
Refinement & Iteration
● Let Users review, test and critique your design/product– Analyze all critiques– Decide if it’s appropriate and worth making a change over– Not all criticism mandates design changes...
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Slide 8
Parts & Tools
● It’s time to make some tough choices.
● You have to provide a detailed list of items you predict you will need for your project:– Sensors (Ultrasonic, Tilt, Heart Monitor, etc)– Actuators (LED, Buzzer, Pump, Motor, LCD, etc)– Fabrication (Cardboard, Design Paper, Popsicle Sticks,
Glue, Staples, etc)– Tools (Glue Gun, Scissors, Coloring, etc)– Anything else...
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Slide 9
Parts List / Design ReviewWorksheet
Review / Refine (2-5 min)● Pitch idea to teachers, listen to critique, and refine
problem statement & solution, if necessary
Shopping List (15 min)● Sensors ● Actuators● Fabrication Materials● Tools● Anything Else
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Slide 10
ALP Project
Keep what you have written!
You’ll need to include it into your ALP Project write-up.
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Slide 11
Servo Motor
motorattachments
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Slide 12
Servo Motor
● Common Model: Micro Servo sg90● Rotation Range: ~180°● Uses internal potentiometer to
maintain position ● Input: analog/PWM voltage
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Slide 13
Servo Motor
Servo Wire Arduino Pin
Red (+) 5V
Brown (-) Gnd
Orange (S) Any ~PWM I/O Pins
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Slide 14
Servo Motor
● Control using Servo Blocks
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Slide 15
LCD● Liquid Crystal Display
– Cheap, monochrome version of LCD TV– Can display 2 lines of text, 16 chars each– Only works in Upload mode– Pairs well in projects using Ultrasonic
● When you want tell user things that are hard to communicate with just LEDs
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Slide 16
LCD Pins
● Need a resistor ● And a potentiometer
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Slide 17
LCD Extension
Find CodeDojo LCD Extension
“CDG_LCD”
Add to Arduino Device
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Slide 18
Using LCD Extension
“Display” in French
The I/O Pins we used
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Slide 19
Copyright
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