November (issue #424) Circuit Cellar

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4: An ESP32 Dashboard – Monitoring How a Popular Microcontroller Uses Resources, By Pedro Bertoleti

REFERENCES
[1] https://www.freertos.org/Documentation/01-FreeRTOS-quick-start/01-Beginners-guide/01-RTOS-fundamentals
[2] https://www.digikey.es/en/maker/projects/introduction-to-rtos-solution-to-part-4-memory-management/6d4dfcaa1ff84f57a2098da8e6401d9c?srsltid=AfmBOoodz6Vl_zR6uwtr30bTLK4KIa7Aa3xF9h3jXoBucJmNwCpFqkXo
[3] https://percepio.com/tracealyzer/freertostrace/
[4] https://freertos.org/Documentation/03-Libraries/02-FreeRTOS-plus/05-FreeRTOS_plus_Trace/CPU_Load
[5] https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/misc_system_api.html#_CPPv422esp_get_free_heap_sizev
[6] https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/system/misc_system_api.html#_CPPv430esp_get_minimum_free_heap_sizev
[7] https://docs.espressif.com/projects/esp-idf/en/v4.4/esp32/api-reference/system/freertos.html
[8] https://www.freertos.org/Documentation/02-Kernel/04-API-references/03-Task-utilities/00-Task-utilities#vtaskgetruntimestats

10: Designing Analog Electronics – Part 1: Error and Uncertainty, By Andrew Levido

REFERENCES
[1] ST Microelectronics STM32L03 Datasheet
https://www.st.com/resource/en/datasheet/stm32l031g4.pdf
[2] Texas Instruments TL074H jellybean FET amplifier
https://www.ti.com/product/TL074H
[3]Texas Instruments low-cost jellybean op amp, the LM324
https://www.ti.com/product/LM324
[4] TP553x family of op amps from 3Peak
https://static.3peak.com/res/doc/ds/Datasheet_TP5531-TP5532-TP5534.pdf

20: Keeping Time with Rolling Balls – An Arduino-Controlled Gravitram Clock, By Aubrey Kagan

RESOURCES
QCAD | www.qcad.org/en
FreeCAD | www.freecad.org

REFERENCES
[1] Aubrey Kagan, “Antique Clock Accuracy Project: Reloaded.” Circuit Cellar 381. April, 2022.
[2] Tubing Components:
Thermaltake Pacific DIY LCS V-Tubler PETG Hard Tubing, 1000mm, OD 16mm x ID 12mm, 4-Pack, CL-W116-PL16TR-A, Transparent
Silicone bending insert 12mm
3Pcs PETG Bending Kit 16mm OD 45/90 / 180 Degree Acrylic Hard Rigid Tube Bender Mold Tool Kit for 16MM Tube https://www.amazon.ca/dp/B0873BLCWC?ref=ppx_yo2ov_dt_b_fed_asin_title
[3] Electronic Hardware:
Arduino Zero https://store-usa.arduino.cc/products/arduino-zero
Adafruit 16-Channel 12-bit PWM/Servo Shield https://www.adafruit.com/product/1411
Adafruit Assembled Data Logging shield for Arduino https://www.adafruit.com/product/1141
[4] Aubrey Kagan, “Evaluation of Debugger on Arduino IDE V2.0.4” Circuit Cellar 397. August, 2023.
[5] ROT3U 6DOF Aluminum Robot Arm https://www.diymore.cc/products/diymore-rot3u-6dof-aluminium-robot-arm-mechanical-robotic-clamp-claw-kit-for-arduino-mega2560
[6] MG996 Servo https://www.digikey.com/htmldatasheets/production/5014637/0/0/1/mg996r.pdf
[7] DF125F https://cdn-shop.adafruit.com/product-files/1404/D125F_Servo_Data.pdf
[8] Dynamixel AX12A https://www.adafruit.com/product/4768#technical-details
[9] JF-0530B solenoid https://www.ebay.ca/itm/315510692446
[10] DC Coreless Vibration Motors 7x25mm 1-6V 8000-20000RPM https://www.amazon.ca/dp/B0CY2KLH2P?ref=ppx_yo2ov_dt_b_fed_asin_title
[11] Matrix Orbital LK162B-7T https://www.matrixorbital.com/lk162b-7t
[12] YouTube video of my gravitram in operation https://youtu.be/5QMR4Z1pbuQ?si=qOd1Y5y_gf71JCX6

26: Empowering Disabled Persons with Hand Motions for Environmental Controls, By Matthew Oppenheim

REFERENCES
[1] Matthwe Oppenheim. “Full-stack Python.” Circuit Cellar #319, February, 2017.
[2] The author’s software in action, alongside the smart watch that produces the sensor data: https://youtu.be/m3XazLUtzLc
[3] Lilygo programmable smart watch: https://lilygo.cc/products/t-watch-s3
[4] Handshake system for people with severe disabilities: https://mattoppenheim.com/projects/2018/02/handshake
[5] Matthew Oppenheim. “Create Your Own PCBs with a CNC Milling Machine,” Circuit Cellar #414, January, 2025.
[6] Grid communication software by Smartbox: https://thinksmartbox.com/grid/
[7] The PyQtGraph library: https://www.pyqtgraph.org
[8] The Pandas library: https://pandas.pydata.org
[9] The DebugLog library: https://github.com/hideakitai/DebugLog
[10] Python code for the project: https://github.com/mattoppenheim/realtime_graphing
[11] The PyDispatcher library: https://github.com/mcfletch/pydispatcher

36: TECHNOLOGY FEATURE: CIA for SBCs (and More) Securing Embedded Systems from Evolving Threats, By Curtis Franklin

REFERENCES
[1] Lockheed-Martin | https://www.lockheedmartin.com/en-us/capabilities/cyber/cyber-kill-chain.html
[2] MITRE | https://attack.mitre.org/
[3] https://www.cisa.gov/securebydesign

SOURCES
Microchip | https://www.microchip.com/en-us/products/microcontrollers/32-bit-mcus/pic32-sam/pic32cm-lx
Infineon | https://www.infineon.com/part/OPTIGA-TRUST-M-EXPRESS
NVIDIA | https://www.nvidia.com/en-us/autonomous-machines/embedded-systems/jetson-orin/
NXP | https://www.nxp.com/products/SE050
NXP | https://www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/lpc5500-arm-cortex-m33:LPC5500_SERIES
Renesas | https://www.renesas.com/en/products/ra8t2
Qualcomm | https://www.qualcomm.com/products/internet-of-things/robotics-processors/flight-rb5-platform
Rockchip | https://www.alldatasheet.com/datasheet-pdf/pdf/1757634/ROCKCHIP/RK3566.html
STMicroelectronics | https://www.st.com/en/secure-mcus/stsafe-a100.html

42: DATASHEET: Making the Right Voltage – DC-to-DC Converters Bring the Right Voltage to Circuits, By Curtis Franklin

Datasheet URLs:
Advanced Energy: https://www.advancedenergy.com/getmedia/5d317ace-4d34-435e-8a5d-bcd918d1fef8/en-datasheet-NDQ1300-3-25.pdf
Calex: https://www.relec.co.uk/wp-content/uploads/2023/06/48S12.750BCE_A01.D10.pdf
Cosel: https://datasheet.octopart.com/DCS1400B12-Cosel-datasheet-188804378.pdf
Curtiss-Wright: https://www.curtisswrightds.com/resources/lv-hv-dcc-dcdc-converter-data-sheet
HALO: https://www.mouser.com/pdfDocs/dc11-converter-datasheet.pdf
Microchip: https://ww1.microchip.com/downloads/aemDocuments/documents/IPS/ProductDocuments/DataSheets/Radiation-Hardened-Isolated-DC-to-DC-Converter-DS00005965.pdf
Rohm: https://fscdn.rohm.com/en/products/databook/datasheet/ic/power/switching_regulator/bd9e104fj-e.pdf
Vicor: https://www.vicorpower.com/documents/datasheets/ds-DCM3735S60D13L0TN1-VICOR.pdf
VPT: https://www.vptpower.com/products/datasheet/sgrbx-series-pdf

46: PICKING UP MIXED SIGNALS: A GPS-Disciplined Frequency Counter Using the PSoC 5LP, By Brian Millier

REFERENCES
[1] Air530 GPS module: Seeed Technology PN109020022
https://www.digikey.ca/en/products/detail/seeed-technology-co-ltd/109020022/12323450?s=N4IgTCBcDaIOICcD2A3ApgAgIIEsEFYBmABgzgAUBlEAXQF8g
[2] CY8CKIT-059 Development board: Infineon
https://www.infineon.com/cms/en/product/evaluation-boards/cy8ckit-059
[3] Brian Millier, “Picking Up Mixed Signals: Variable Frequency Drive (Part 1): Washing Machine Repurposed.” Circuit Cellar 348, July, 2019.
[4] Brian Millier, “Picking Up Mixed Signals: Variable Frequency Drive (Part 2): Bandsaw Upgrade.” Circuit Cellar 350, September, 2019.
[5] Brian Millier, “Picking Up Mixed Signals: Bluetooth-Enabled ECG Monitor: Using the Cypress PSoC 6 MCU.” Circuit Cellar 352, November, 2019.
[6] Brian Millier, “Picking Up Mixed Signals: Designing MCU-Based Lab Instruments: Using the Cypress PSoC 5LP MCU.” Circuit Cellar 378, January, 2022.
[7] Brian Millier, “Picking Up Mixed Signals: A Lock-In Amplifier: Based on a PSoC5LP SoC.” Circuit Cellar 394, May, 2023.
[8] PSoC 5LP: Infineon
https://www.infineon.com/cms/en/product/microcontroller/32-bit-psoc-arm-cortex-microcontroller/32-bit-psoc-5-lp-arm-cortex-m3
[9] Connor Winfield VKB61B2-010.0M VCXO module: https://www.conwin.com/datasheets/vx/vx604.pdf

Code and Supporting File s

54: EMBEDDED SYSTEM ESSENTIALS: Using a Desktop Laser Engraver to Probe into Chip Silicon, By Colin O’Flynn

RESOURCES
STMIcroelectronics | www.st.com

REFERENCES
[1] Colin O’Flynn, “IC Packaging and Security: Do They Affect One Another?” Circuit Cellar 362, September, 2020.
[2] Bunnie, “Infra-Red, In Situ (IRIS) Inspection of Silicon.” https://www.bunniestudios.com/blog/2023/infra-red-in-situ-iris-inspection-of-silicon/
[3] Fraktal’s Laser Fault Injection rig: https://github.com/fraktalcyber/lfi-rig
[4] Companion GITHub for article resources: https://github.com/colinoflynn/circuitcellar-EmbeddedSystemEssentials

63: TECH THE FUTURE: The Future of Embedded Systems and AI – AI in Embedded Systems – Cybersecurity Challenges and Opportunities in a Smarter World, By Pete Popov

RESOURCE
Konsulko Group | www.konsulko.com

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November (issue #424) Circuit Cellar