August (issue #349) Circuit Cellar

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p.6: Automating the Art of Toast: With a Side of Raspberry Pi, By Katie Bradford and Michael Xiao

References:
[1] A small, portable computer. Specifically the Raspberry Pi Zero W, a wireless enabled computer with the smallest form factor for Pis yet, was used in this project https://www.raspberrypi.org/

[2] Using the small PIC32 breakout board provided by ECE4760 course, found here http://people.ece.cornell.edu/land/courses/ece4760/PIC32/target_board.html

[3] Supported by CECOMINOD012186 motor driver boards, complete with voltage regulation and headers. Qunqi part number MK-050-2.

Additional Information

Website: http://people.ece.cornell.edu/land/courses/ece4760/FinalProjects/f2018/mfx2_keb278/mfx2_keb278/mfx2_keb278/index.html

Video 1: https://www.youtube.com/watch?v=zUwJVrSkh3M

Video 2: https://www.youtube.com/watch?v=gYBhZNorL6M

p.12: Build an RGB LED Controller: Using Parallel FET Dimming, By Dirceu R. Rodrigues, Jr.

Component List

Resistors

R1, R10, R12, R14 = 10 kΩ

R2, R3, R4, R5, R6, R7, R8 = 390 Ω

R9, R11, R13 = 51 Ω

R15, R19, R20, R21 = 39 kΩ

R16 = 47 Ω

R17 = 4.7 kΩ

R18 = 2.2 kΩ

R22 = 0.33 Ω (Rs)

Capacitors

C1, C3 = 0.1 µF

C2 = 0.33 µF

C4 = 47 µF

C5 = 1 µF

Inductor

L1 = 180 µH (Pulse P0465)

Semiconductors

REG1 = LT7805CV linear regulator

U1 = ATmega8 microcontroller (my MYK2 module)

U2 = ZXLD1350 350 mA LED driver

IR1 = AX-1838HS IR receiver

D1 = ZLSS1000 diode

DI1 = Seven segment display

LED1, LED2, LED3 = Power RGB LED 350 mA/3 W

Q1 = BC848 NPN Transistor

M1, M2, M3 = IRF7317 double power MOSFET

Miscellaneous

Y1 = Crystal 16 MHz

J1 = Power jack

S1 = SPST slide switch

S2 = Push button

Diodes | www.diodes.com
Microchip Technology | www.microchip.com
MCS Electronics | www.mcselec.com

p. 20: Building a Twitter Emote Robot: Reactions in Real Time, By Ian Kranz, Nikhil Dhawan and Sofya Calvin

References
[1] Primack, Brian A et al. “Social Media Use and Perceived Social Isolation Among Young Adults in the U.S” American journal of preventive medicine vol. 53,1 (2017): 1-8.
[2] 18-bit color TFT
Adafruit Inc. | www.adafruit.com
[3] Twitter Python Library
Tweepy | www.tweepy.org
[4] Emotion Analyzer
ParallelDots | www.paralleldots.com
[5] Bluetooth HC-05
DSD Tech | www.dsdtech-global.com
[6] Pic32 PCB
Sean Carroll | people.ece.cornell.edu/land
[7] Peripheral Device Library
Bruce Land | people.ece.cornell.edu/land
[8] Modified Protothreads Library
Syed Tahmid Mahbub | tahmidmc.blogspot.com

Watch the video of the TweetBot project here:

p. 26: Understanding the Role of Inference Engines in AI: Benchmarks and Batching, By Geoff Tate

Reference
[1] Artificial Intelligence
https://semiengineering.com/knowledge_centers/artificial-intelligence/

Flex Logix Technologies | www.flex-logix.com

p.30: Portable Digital Synthesizer: Music Using an MCU, By T.J. Hurd and Ben Roberge

References:
[1] https://www.microchip.com/wwwproducts/en/PIC32MX250F128B
[2] http://people.ece.cornell.edu/land/courses/ece4760/PIC32/target_board.html
[3] https://www.adafruit.com/product/1010
[4] https://cdn-shop.adafruit.com/datasheets/pec11.pdf
[5] http://people.ece.cornell.edu/land/courses/ece4760/PIC32/Microchip_stuff/port_expander.pdf
[6] http://ww1.microchip.com/downloads/en/DeviceDoc/20002249B.pdf
[7] https://www.adafruit.com/product/1480
[8] http://dunkels.com/adam/pt/index.html
[9] https://www.analog.com/en/analog-dialogue/articles/all-about-direct-digital-synthesis.html
[10] https://en.wikipedia.org/wiki/Frequency_modulation_synthesis
[11] https://www.wikiaudio.org/adsr-envelope/
[12] http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1169.pdf
[13] https://www.best-microcontroller-projects.com/rotary-encoder.html
[14] https://www.soundonsound.com/techniques/optimising-latency-pc-audio-interface#7

Adafruit | www.adafruit.com
Autodesk | www.autodesk.com
Microchip Technology | www.microchip.com
Monoprice | www.monoprice.com

Watch the video of the Portable Digital Synthesizer project here:

p.38: IC Solutions Rev Up for Next Gen Auto Designs: MCUs, Analog ICs and More, By Jeff Child

p.45: Display Solutions Enhance Embedded Designs: System-Level Functionality, By Jeff Child

p.48: PRODUCT FOCUS: Tiny Embedded Boards: Petite Processing, by Jeff Child

p.52: EMBEDDED IN THIN SLICES: Bluetooth Mesh (Part 4): Models and Re-Use, By Bob Japenga

References:
[1] For Licensing rights https://upload.wikimedia.org/wikipedia/commons/2/2b/Osi-model.png
[2] Created by Bob Japenga
[3] Created by Bob Japenga

p.58: THE DARKER SIDE: The Fundamentals of Fuseology: Purposeful Protection, By Robert Lacoste

References
[1] Fuses https://en.wikipedia.org/wiki/Fuse_(electrical)
[2] IEC60269
Low-voltage power fuses
https://en.wikipedia.org/wiki/IEC_60269
[3] Fuseology
Littelfuse
https://m.littelfuse.com/~/media/automotive/catalogs/littelfuse_fuseology.pdf

IEC 60127-2:2014
Miniature fuses – Part 2: Cartridge fuse-links
https://webstore.iec.ch/publication/814

Fuse Technology
Bussmann
http://www1.cooperbussmann.com/pdf/201de5b7-c22d-4b7b-814b-f803ab96cd83.pdf

Fuse glass 2 A 250 VAC 5 x 20 mm
Littelfuse ref 0218002.HXP

AIM-TTi | www.aimtti.com
Keysight | www.keysight.com
Littelfuse | www.littelfuse.com
TDK-Lambda | www.tdk-lambda.com

p.64: FROM THE BENCH: Watt’s Up with LEDs?: Efficiency Put to the Test, By Jeff Bachiochi

References:
[1] Luxeon heatsink calculator.
https://support.luxeonstar.com/hc/en-us/articles/360022625174-How-do-I-determine-what-size-of-heat-sink-I-need-Includes-heat-sink-calculator-

www.westinghouselighting.com/color-temperature.aspx
www.ledwatcher.com/light-measurements-explained/#light-meter-apps

www.ohmite.com/assets/docs/sink_s.pdf

‘Light Meter’ by Doggo Apps or ‘Lux Meter’ by My Mobile Tools Dev

3 W High-Power LEDs

Addicore

Addicore | www.addicore.com
On Semiconductor | www.onsemi.com
Texas Instruments | www.ti.com

p.72: THE CONSUMMATE ENGINEER: Energy Monitoring (Part 3): Natural Gas and More, By George Novacek

References:

George Novacek, Humidity Sensors, Circuit Cellar Issue 339
Silicon Labs Si7006-A20 http://www.silabs.com/documents/public/data-sheets/Si7006-A20.pdf
Adafruit Industries https://www.adafruit.com/
Universal Solder https://universal-solder.ca/
SparkFun Electronics https://www.sparkfun.com/
Circuit Cellar #288 WWVB Clock Revisited by George Novacek

p.79: The Future of IoT Standards: Unlock IoT: What’s West of Westeros?, By Cees Links

References
[1] Golden Mousetrap Lifetime Achievement Award
[2] Wi-Fi NOW Hall of Fame.

Qorvo | www.qorvo.com

Article Materials for Circuit Cellar Magazine Issue 349 • August 2019 — Get a PDF of the Issue.

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August (issue #349) Circuit Cellar