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November (issue #376) Circuit Cellar

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p.6: Build an IoT-Based Solar Panel Monitor: Using the Sigfox LPWAN, By Pedro Bertoleti

[1] GitHub repository
[2] Luiz Henrique Corrêa Bernardes, “IoT Sigfox Com Edukit RedFox”, Instituto NCB, 2021.
[3] iHub repository:
[HT32SX SiP datasheet:
HT32SX SiP AT Commands sheet
[4] Adafruit library for INA219
[5] For the RedFox development kit, this procedure is described (in Portuguese, with screenshots in English idiom) at this link:

Arduino |
HT Micron |
Microchip Technology |
Sigfox |
TagoIO |
Texas Instruments |

p.16: IoT Device Measures Key Health Stats: The MyPulse Project, By Andrei Florian


Fritzing |
Microsoft Azure |
MikroElektronika |
Seeed |
STMicroelectronics |

p.28: Building an LC Meter: Retro Design Reimagined, By Charles Kosina

[1] Alan Hampel, Vintage Workbench: The Tektronix Type 130 LC Meter, Parts 1 and 2. Silicon Chip, June, 2020 and July, 2020.
[2] ATtiny4313
[3] Vishay capacitors

Analog Devices |
Farnell, an Avent Company |
Microchip Technology |
Tektronix |
Texas Instruments |
Vishay |

p.36: Designing Accelerators: Hardware vs. Software: Speed and Synthesis, By Nishant Mittal


[1] Vivado HLS User’s Manual

Xilinx |

p.39: Smart Lighting Technologies Leverage LEDs and IoT: Efficiency and Connectivity, By Jeff Child

Analog Devices |
Berg Insight |
The DALI Alliance |
Infineon Technologies |
Melexis |
Maxim Integrated |
ON Semiconductor |
Qorvo |
Renesas Electronics |
Silicon Labs |
STMicroelectronics |
Zhaga |

p.47: Box-Level Systems Marry AI and IoT: Intelligence at the Edge, By Jeff Child

Aaeon |
Adlink Technology |
Advantech |
American Portwell Technology |
Axiomtek |
Cincoze |
Kontron |
OnLogic |

p.53: DATASHEET: DC-DC Converters: On Track for Performance, By Jeff Child

MINMAX Technology |
Murata |
TDK-Lambda Americas |
XP Power |



MINMAX Technology



TDK-Lambda Americas

XP Power

p.56: EMBEDDED SYSTEM ESSENTIALS: Building the ChipWhisperer-Husky: Upgraded Design, By Colin O’Flynn

[1] “USB-to-FPGA Communications”, Circuit Cellar 299, June 2015

Microchip Technology |
NewAE Technology |
Sigrok |
Xilinx |

p.59: PICKING UP MIXED SIGNALS: Cabinet Simulator: “Stomp Box” for Guitarists: Using Teensy 4.1, By Brian Millier

[1} “Fancy Filtering with the Teensy 3.6” (Circuit Cellar 346, May 2019)
[2] TFilter- online FIR filter design:
[3] Teensy Audio Library and Audio System Design Tool:
[4] Teensy 4.1, Audio Adapter and TFT Display can all be found on the PJRC (Teensy) website:

MathWorks |
Microchip Technology |
NXP Semiconductors |
Princeton Technology |
Texas Instruments |

p.68: FROM THE BENCH: Timekeeping Using an MCU: Stepper Substitute, By Jeff Bachiochi

[1] Patent for solid-state quartz watch
[2] Simon Inns’ post on Vetinari’s Clock (driving a quartz clock movement).
[3] Akafugu Corporation product on reproducing a Lord Vetinari
[4] Geppetto Electronics
[5] Nick Sayer’s PCB design files (Crazy Clock: A replacement controller for Lavet stepper clock movements).
[6] Nick Sayer’s Firmware files for Crazy Clock— An ATTiny85-based, variable-rate (with long-term accuracy) clock
[7] Nick’s original project
[8]  YouTube video with explanation of how a Lavet-type stepper motor works:

Adafruit |
Microchip Technology |
Torex Semiconductor |

p.79: The Future of Scalable IoT: Connecting and Managing IoT Devices at Scale, By Ken Lynch

[1] GSMA IoT Revenue: State of the Market 2020
[2] James Brehm & Associates, “IoT Results & News Roundup thru Q3 2019”
[3] James Brehm & Associates, “State of the Market”, 2019
[4] ABI Research, “Shared Spectrum and Private Networks Tracker”, 3Q 2021

Senet |

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November (issue #376) Circuit Cellar

by Circuit Cellar Staff time to read: 4 min