Danny Rozin

Originally written on August 4, 2017 by Tom Igoe
Last modified on November 29, 2017 by Daniel Rozin

Danny Rozin Intro to Physical Computing
Fall 2017

Class Times

Wednesday, 9:00 AM – 11:30 AM
Wednesday 3:20 PM – 5:50PM


Office hours – My office hours calendar


30%   In-class lab work and participation
20%   Midterm a/k/a Stupid Pet Trick
30%   Final project
20%   Blog & documentation


See the following link for Parts Needed


First Week

slides about interaction

my work


To do first week

Email me your blog link by clicking here


Morning section blogs:

Chian Huang
Dan Oved
Rumex Fanni Fazakas
Hau Yuan
Heng Tang
Maria Hye Ryeong Shin
Jason Yung
Katherine Wu
Lin Zhang
Luna Olavarria Gallegos
Mai Arakida Izsak
Mengzhen Xiao
Mohammad Rizqi Hafiyyandi
Shreiya Chowdhary
Xiran Yang
Yeonhee Lee
Zahra Khosravi

Afternoon section blogs:

Alexandra Lopez-Duarte
Amena Hayat
Caleb M Cloitre-Ferguson
Danxiaomeng Huang
Gabriel Goncalves
Alice Hee Gyung Sun
Natier Heimy Fernandez Barreto
Rachel Huiyi Chen
Isabella Vento
James Huang
Kimberly Lin
Lucas Chung
Michael Blum
Nicolás Peña-Escarpentier
Stephanie Hagemeister
Eva Yipeng Chen



Week 5

Tom’s delay() library


Week 7 – More Serial

Arduino -> P5

P5 and Arduino sketches for sending 1 byte binary from Arduino to P5

P5 and Arduino sketches for sending 1 value in ascii from Arduino to P5

P5 -> Arduino

P5 and Arduino sketches for sending 1 byte binary from P5 to Arduino

 1 byte binary from P5 to Arduino with video capture

P5 and Arduino sketches for sending 1 value in ascii from P5 to Arduino

Multiple values

P5 and Arduino sketches for sending multiple values in ascii from  Arduino to P5

P5 and Arduino sketches for sending multiple values in ascii from P5 to Arduino

Duplex (two way) serial communications (arduino <->P5)

For a more robust way of sending multiple values and also sending duplex look at this lab


Week 9

Tentative project schedule :

Concept – week 1 (Week 9 of semester)

To do:Narrow your ideas, make playtesting pototype, make BOM, Schedule, space and interaction diagrams

Interaction Design / play test – week 2 (Week 10 of semester)

To do: Reevaluate idea and interaction after playtesting, adjust BOM and diagrams accordingly, order stuff, learn required skills (special sensors and such)

 Implementation -weeks 3-4 ( Weeks 11-12 of semester)

To do: Build functional prototype (maybe not 100% fabricated exterior)

Usability testing week 5 (Week 13)

To do: Reevaluate usability after usability test, make changes, finish prototype including fabrication

Final presentation week 6 (Week 14)

To do: Celebrate! (and document)

BOMs, system diagrams and time tables from previous semesters:

Sam Levigne RoboCop
Chanwook Min
Some BOMS and diagrams of my (Danny) work


Week 11 – Loads

AC Loads:

Any AC load can be controlled with Arduino using a relay, including motors, fans, lights, computers,

power switch tail https://www.adafruit.com/products/268 safest and most convenient

Relay https://www.sparkfun.com/products/10924 you need to wire your high voltage through it so be super carefull

AC motors

Attributes: Cheap, strong, medium speed, hard to control speed, hard to reverse.


Geared AC motors

Attributes: cheap, slow, very strong, hard to control speed, hard to reverse.

http://www.mcmaster.com/#ac-motors/=zr6bef (scroll down)

DC Motors

Attributes: Cheap , strong, very fast , you can control speed but not angle, reversible


Geared DC motors

Attributes:  Very strong, slow , you can control speed but not angle, reversible https://www.servocity.com/html/micro_gearmotorblocks.html

DC motors with encoder

Attributes: Like DC motors but give you to feedback via optical encoder


Stepper motor

Attributes: medium speed, control speed, position, reversible


Geared stepper motor

Attributes: slow, strong, control speed, position, reversible



Attributes: slow, strong, control speed, position, reversible, 180 degrees , super easy to control


More servos – https://www.servocity.com/html/servos___accessories.html

Continuous rotation 360 degree servo

Attributes: slow, strong, control speed, reversible, super easy to control


Linear actuators

Attributes: Linear, limited stroke, expensive, control like DC motor, some have potentiometer feedback


Attributes: Super fast, super short stroke, momentary


Mechanical linkages:

Hubs – https://www.servocity.com/html/hubs__couplers___adaptors.html

couplers – https://www.servocity.com/html/set_screw_shaft_couplers.html#.VkJ3Tq6rSEI

gears – https://www.servocity.com/html/pinion_gears.html

chains / sprockets – https://www.servocity.com/html/sprockets___chain.html

Belts / pulleys  – https://www.servocity.com/html/pulleys___belts.html



Week 12 – more communications

Some more Asynchronous serial:

MIDI, Control sound and synthesizers from Arduino:


DMX, Control lighting and other theatrical and home automation:


Synchronous serial:








Shifting :


Another Multiplexer (not serial, analog)