Article Materials and Resources

February (issue #391) Circuit Cellar

Click here for the Circuit Cellar article code archive

This issue is available in PDF format from our webshop.
As individual articles are made available on the website they will be linked on the TOC page-here

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

Infineon PSoC 6,
Picovoice Console,

[1] Getting Started with PSoC 6 MCU on Modus Toolbox Software,
[2] RGB Color Codes Chart,
[3] Picovoice Tutorials for Porcupine and Rhino,

Code and Supporting Files

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

[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,
[4] Smart Thermostat,
[5] Finite State Machine (FSM) Concept and Implementation,
[6] Indoor Air Quality: CO2 and Air Quality,
[7] Air Quality Guide for Particle Pollution,
[8] AWS IoT Device SDK for Embedded C,
[9] Tools to Build on AWS,

What is AWS IoT?,
MQTT: The Standard for IoT Testing,
Introduction to MQTT,
Finite-State Machines: Theory and Implementation,–gamedev-11867

Code and Supporting Files

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

[1] NuttX official website:
[2] NuttX RTOS repository:
[3] NuttX RTOS features:
[4] NuttX RTOS applications and OS repositories:
[5] Instructions for downloading and installing full ESP-IDF on your computer:
[6] The official repository’s drivers/sensors folder for peripherals:
[7] Initialization codes for the ESP32 MCU:
[8] Initialization code for ESP32-DevKitC:
[9] BMP180 initialization code for ESP32:
[10] BMP180 NuttX app example:
[11] Picocom official website:,devices%20that%20provide%20serial%20consoles


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

[1] Wikipedia article on data acquisition:
[2] Markets and Markets report on DAQ market:
[3] Polaris Market Research report on DAQ market:
[4] Keyence Whitepaper Library:

National Instruments:

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

AAEON BOXER-6646-ADP Datasheet:
ASRock Industrial iBOX-1265UE Datasheet:
AVerMedia D315AOB Standard Box PC Datasheet:
Cincoze DV-1000 Datasheet:
Distec BoxPC Pro NPA-2009 Datasheet:
iBASE AMS310 Datasheet:
ICP Deutschland GmbH TANK-XM811 Datasheet:
Saelig Amplicon Impact-P 101A Datasheet:
Sintrones ABOX-5211(P) Series Datasheet:

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

Espressif Systems:

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.

O2 Concepts:

Explanation of how an oxygen concentrator filters out the nitrogen:
Explanation of how a keyboard scan matric works:

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

[1] Digikey trace width calculator:
[2] Sierra via current calculator:
[3] Sierra Circuits article on striplines and microstrips:
[4] Microstrip impedance calculator:
[5] Differential trace impedance calculator:

Labcenter Electronics:

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

[1] Microchip’s Application Note AN617, Fixed Point Routines

Code and Supporting Files

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

[1] “1 in 4 Americans Own a Smart Speaker. What Does That Mean For News?” NYT:
[2] Edgar Snyder & Associates “Swimming Injury Statistics”:
[3] CDC “Drowning Facts”:
[4] PoolScout:
[5] Hackensack Meridian Health “8 Truths About Drowning and ‘Dry Drowning’ Revealed”:

Deep Innovations:

Keep up-to-date with our FREE Weekly Newsletter!

Don't miss out on upcoming issues of Circuit Cellar.

Note: We’ve made the Dec 2022 issue of Circuit Cellar available as a free sample issue. In it, you’ll find a rich variety of the kinds of articles and information that exemplify a typical issue of the current magazine.

Would you like to write for Circuit Cellar? We are always accepting articles/posts from the technical community. Get in touch with us and let's discuss your ideas.
Sponsor this Article
Website | + posts

Circuit Cellar's editorial team comprises professional engineers, technical editors, and digital media specialists. You can reach the Editorial Department at, @circuitcellar, and

Supporting Companies

Upcoming Events

Copyright © KCK Media Corp.
All Rights Reserved

Copyright © 2024 KCK Media Corp.

February (issue #391) Circuit Cellar

by Circuit Cellar Staff time to read: 5 min