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February (issue #391) Circuit Cellar

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4: Improved Color Control for Analog LED Strips: Using a PSoC 6 MCU and Picovoice AI, By Alexandru Dumitrache

SOURCES
Infineon PSoC 6, https://www.infineon.com/cms/en/product/microcontroller/32-bit-psoc-arm-cortex-microcontroller/psoc-6-32-bit-arm-cortex-m4-mcu/
Picovoice, https://picovoice.ai/
Picovoice Console, https://console.picovoice.ai

REFERENCES
[1] Getting Started with PSoC 6 MCU on Modus Toolbox Software, https://www.infineon.com/dgdl/Infineon-AN228571_Getting_started_with_PSoC_6_MCU_on_ModusToolbox_software-ApplicationNotes-v06_00-EN.pdf?fileId=8ac78c8c7cdc391c017d0d36de1f66d1
[2] RGB Color Codes Chart, https://www.rapidtables.com/web/color/RGB_Color.html
[3] Picovoice Tutorials for Porcupine and Rhino, https://picovoice.ai/docs/

Code and Supporting Files


12: Build a Custom IoT App with AWS IoT: Part 2: Serverless Application, By Raul Alvarez-Torrico

REFERENCES
[1] Raul Alvarez Torrico, “Build a Custom App with AWS IoT Core. Part 1: Embedded IoT Device.” Circuit Cellar 390, January 2023. (Purchase PDF | View Issue TOC)
[2] Raul Alvarez Torrico, “Build IoT Secure Apps with AWS Services.” Circuit Cellar 383, June 2022 (Purchase PDF | View Issue TOC)
[3] AWS IoT EduKit Workshop, https://edukit.workshop.aws/en/
[4] Smart Thermostat, https://catalog.us-east-1.prod.workshops.aws/workshops/0fc6bf2c-f59c-4490-9254-ef604942f5d3/en-US/smart-thermostat
[5] Finite State Machine (FSM) Concept and Implementation, https://web.stanford.edu/class/cs123/lectures/CS123_lec07_Finite_State_Machine.pdf
[6] Indoor Air Quality: CO2 and Air Quality, https://www.iqhome.org/index.php?route=extension/d_blog_module/post&post_id=17
[7] Air Quality Guide for Particle Pollution, https://crondallweather.co.uk/air-quality-index-aqi-and-particulate-matter/
[8] AWS IoT Device SDK for Embedded C,  https://github.com/aws/aws-iot-device-sdk-embedded-C
[9] Tools to Build on AWS, https://aws.amazon.com/developer/tools/

SOURCES
What is AWS IoT?, https://docs.aws.amazon.com/iot/latest/developerguide/what-is-aws-iot.html
MQTT: The Standard for IoT Testing, https://mqtt.org/
Introduction to MQTT, https://learn.sparkfun.com/tutorials/introduction-to-mqtt/all
Finite-State Machines: Theory and Implementation, https://gamedevelopment.tutsplus.com/tutorials/finite-state-machines-theory-and-implementation–gamedev-11867

Code and Supporting Files


20: The NuttX Engineer: An Introduction to Apache Nuttx, By Pedro Bertoleti

REFERENCES
[1] NuttX official website: https://nuttx.apache.org/
[2] NuttX RTOS repository: https://github.com/apache/nuttx/tree/master/boards
[3] NuttX RTOS features:  https://nuttx.apache.org/docs/latest/introduction/about.html
[4] NuttX RTOS applications and OS repositories: https://github.com/apache/nuttx-apps
and https://github.com/apache/nuttx
[5] Instructions for downloading and installing full ESP-IDF on your computer: https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/index.html
[6] The official repository’s drivers/sensors folder for peripherals: https://github.com/apache/nuttx/tree/master/drivers/sensors
[7] Initialization codes for the ESP32 MCU:
https://github.com/apache/nuttx/tree/master/boards/xtensa/esp32/common/src
[8] Initialization code for ESP32-DevKitC:
https://github.com/apache/nuttx/blob/master/boards/xtensa/esp32/esp32-devkitc/src/esp32_bringup.c
[9] BMP180 initialization code for ESP32:
https://github.com/apache/nuttx/blob/master/boards/xtensa/esp32/common/src/esp32_bmp180.c
[10] BMP180 NuttX app example: https://github.com/apache/nuttx-apps/tree/master/examples/bmp180
[11] Picocom official website: https://guix.gnu.org/packages/picocom-3.1/#:~:text=Picocom%20is%20a%20minimal%20dumb,devices%20that%20provide%20serial%20consoles

RESOURCES
ESP-IDF: www.espressif.com
Ubuntu: www.ubuntu.com


28: TECHNOLOGY FEATURE: Data Acquisition Tech: An Overview, By Michael Lynes

REFERENCES
[1] Wikipedia article on data acquisition: https://en.wikipedia.org/wiki/Data_acquisition#:~:text=A
[2] Markets and Markets report on DAQ market: https://www.marketsandmarkets.com/Market-Reports/data-acquisition-system-market-160241507.html?gclid=CjwKCAiAheacBhB8EiwAItVO28AZwXIolYvyvYX-xKuW8DeSr6-9nBIGmoTzBxEGRPRx-PAOIZClUhoC_PwQAvD_BwE
[3] Polaris Market Research report on DAQ market: https://www.polarismarketresearch.com/industry-analysis/data-acquisition-system-market
[4] Keyence Whitepaper Library: https://www.keyence.com/ss/products/daq/lab/

RESOURCES
Dewesoft: www.dewesoft.com
KeySight: www.keysight.com
National Instruments: www.ni.com


34: DATASHEET: Embedded PCs: Complete Compute Solutions, By Sam Wallace

AAEON BOXER-6646-ADP Datasheet: https://newdata.aaeon.com.tw/DOWNLOAD/2014%20datasheet/Systems/BOXER-6646-ADP.pdf
ASRock Industrial iBOX-1265UE Datasheet: https://download.asrock.com/IPC/Download/e-catalog/iBOX-1265UE.pdf
AVerMedia D315AOB Standard Box PC Datasheet: https://s3.us-west-2.amazonaws.com/storage.avermedia.com/web_release_www/D315AOB/Datasheet/D315AOB_Datasheet_v3r1_1101.pdf
Cincoze DV-1000 Datasheet: https://www.cincoze.com/data/files/202205/Datasheet_DV-1000.pdf
Distec BoxPC Pro NPA-2009 Datasheet: https://www.distec.de/fileadmin/pdf/produkte/Embedded/Systeme/Embedded_Box_PCs/BoxPC-Pro_NPA-2009_Datasheet.pdf
iBASE AMS310 Datasheet: https://www.ibase.com.tw/english/download/Intelligent_Systems/AMS310_Datasheet.pdf
ICP Deutschland GmbH TANK-XM811 Datasheet: https://files.icp-deutschland.de/produkte/KC003213/web/icp/Tank-XM811-datasheet-20220706.pdf
Saelig Amplicon Impact-P 101A Datasheet: https://www.saelig.com/supplier/amplicon/impact-p_101a-datasheet.pdf
Sintrones ABOX-5211(P) Series Datasheet: https://www.sintrones.com/datasheets/ABOX-5211.pdf


38: THE MAGIC SMOKE FACTORY: Assemble Professional-Looking PCBs, By Joseph Corleto

RESOURCES
Espressif Systems: www.espressif.com


44: EMBEDDED IN THIN SLICES: Debugging Embedded Real-Time Systems: Strategies to Determine if a Problem is in HW or SW, By Bob Japenga

Article Correction: Issue #391, page 46 contained an error. The sentence, “With a keyscan matrix, 12 wires can be used to read 144 discrete keys,” should instead have read: “With a keyscan matrix, 12 wires can be used to read 36 discrete keys.

RESOURCES
O2 Concepts: https://o2-concepts.com/products
Microchip: https://www.microchip.com/

SOURCES
Explanation of how an oxygen concentrator filters out the nitrogen: https://www.oxygentimes.com/guides/how-oxygen-concentrators-work
Explanation of how a keyboard scan matric works: https://pcbheaven.com/wikipages/How_Key_Matrices_Works/


48: START TO FINISH: Getting Started—PCBs: A Primer on Creating Printed Circuit Boards, By Stuart Ball

REFERENCES
[1] Digikey trace width calculator: https://www.digikey.com/en/resources/conversion-calculators/conversion-calculator-pcb-trace-width
[2] Sierra via current calculator: https://www.protoexpress.com/tools/via-current-capacity-temperature-rise-calculator/
[3] Sierra Circuits article on striplines and microstrips: https://www.protoexpress.com/blog/difference-between-microstrip-stripline-pcb/
[4] Microstrip impedance calculator: https://www.eeweb.com/tools/microstrip/
[5] Differential trace impedance calculator: https://www.eeweb.com/tools/edge-coupled-microstrip-impedance/

RESOURCES
Altium: www.altium.com
KiCad: www.kicad.org
Labcenter Electronics: www.labcenter.com
Orcad: www.orcad.com
Siemens: www.siemens.com


53: FROM THE BENCH: Under Pressure?: May the Force Be with You, By Jeff Bachiochi

REFERENCES
[1] Microchip’s Application Note AN617, Fixed Point Routines
https://www.microchip.com/en-us/application-notes/an617

Code and Supporting Files


63: TECH THE FUTURE: The Future of AI Security: Using AI for Improved Home Safety, By Sam Weitzman

REFERENCES
[1] “1 in 4 Americans Own a Smart Speaker. What Does That Mean For News?” NYT: https://open.nytimes.com/how-might-the-new-york-times-sound-on-smart-speakers-3b59a6a78ae3
[2] Edgar Snyder & Associates “Swimming Injury Statistics”: https://www.edgarsnyder.com/statistics/swimming-pool-statistics.html#:~:text=Swimming%20Pool%20Drowning%20Deaths%20and%20Kids&text=And%20according%20to%20the%20U.S
[3] CDC “Drowning Facts”: https://www.cdc.gov/drowning/facts/index.html
[4] PoolScout: https://www.poolscout.co/
[5] Hackensack Meridian Health “8 Truths About Drowning and ‘Dry Drowning’ Revealed”: https://www.hackensackmeridianhealth.org/en/HealthU/2019/07/09/8-truths-about-drowning-and-dry-drowning-revealed#.Y5zJY3bMK3B

RESOURCES
Deep Innovations: www.deepinnovations.co.uk

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February (issue #391) Circuit Cellar

by Circuit Cellar Staff time to read: 5 min