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October (issue #363) Circuit Cellar

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p.6: Building a Power Rail Probe: An Exercise in Low-Noise Design, By Andrew Levido

Texas Instruments
LMP7731 Low Noise, Precision RRIO Amplifier
TLV2460 Single Low Power RRIO Amplifier

Rohm Semiconductor
BU4828G Voltage Detector

Hammond Manufacturing
Hammond 1457J1201EBK Shielded Aluminum Encloser 120mm x 84mm x 28mm

Hammond Manufacturing | www.hammfg.com
Rohm Semiconductor | www.rohm.com
Texas Instruments | www.ti.com

p.14: Design a Wireless Tracking Device: Smart Antenna Choices, By Geoff Schulteis

Antenova | www.antenova.com

p.18: A Review: V5 Plus Drone Flight Controller: Hands-On Evaluation, By Raul Alvarez-Torrico

References:

[1] “Writing MAVSDK/PX4 Drone Applications” (Circuit Cellar 361, August 2020)
[2] Flight Log Analysis, https://docs.px4.io/v1.9.0/en/log/flight_log_analysis.html
[3] CAN PDB Carrier Board, http://www.cuav.net/en/can-pdb/

Flight Log Analysis
https://dev.px4.io/v1.9.0/en/log/flight_log_analysis.html

Flight Reporting
https://docs.px4.io/v1.9.0/en/getting_started/flight_reporting.html

Log Analysis using Flight Review
https://docs.px4.io/v1.9.0/en/log/flight_review.html

Hardware in the Loop Simulation (HITL)
https://dev.px4.io/v1.9.0/en/simulation/hitl.html

CUAV V5Plus & NEO V2 GPS and Compass Product Page
https://store.cuav.net/index.php?id_product=95&rewrite=cuav-v5-plus-autopilot-with-neo-v2-gps&controller=product

CAN PDB Carrier Board Product Page
https://store.cuav.net/index.php?id_product=123&rewrite=cuav-new-can-pdb-carrier&controller=product

Analog Devices | www.analog.com
Ardupilot | https://ardupilot.org
Bosch Sensortec | www.bosch-sensortec.com
CUAV Tech | www.cuav.net
Dronecode | www.dronecode.org
iSentek Technology | www.isentek.com
PX4 Autopilot | https://px4.io
STMicroelectronics | www.st.com
TE Connectivity | www.te.com
Texas Instruments | www.ti.com

p.26: Code Size vs. Memory Footprint: And Why They Matter, By Steve Graves

McObject | www.mcobject.com

p.30: Balancing a Ball on a Touchscreen: Using a PID Controller, By Gregory Kaiser and Samuel Feibel

References:
[1] Adafruit. “Resistive Touchscreen Overlay – 7″ diag. 165mm x 105mm – 4 Wire.”https://www.adafruit.com/product/1676
[2] Microchip PIC32MX1XX/2XX Family datasheet.
http://ww1.microchip.com/downloads/en/devicedoc/61168b.pdf
[3] HantouchUSA. “How it works: 4-Wire Analog-Resistive Touch Screens.”
https://www.sparkfun.com/datasheets/LCD/HOW%20DOES%20IT%20WORK.pdf
[4] Land, Bruce. Cornell University ECE4760 Development Boards: PIC32MX250F128B.
https://people.ece.cornell.edu/land/courses/ece4760/PIC32/target_board.html
[5] Land, Bruce. ECE 4760: Designing with Microcontrollers. Cornell University School of Electrical and Computer Engineering.
http://people.ece.cornell.edu/land/courses/ece4760
[6] Dunkels, Adam. Protothreads. http://dunkels.com/adam/pt
[7]  Andrews, Greg, Chris Colasuonno, and Aaron Herrmann. “Ball on Plate Balancing System”ECSE-4962 Control Systems Design Final Project Report, April 28, 2004, Rensselaer Polytechnic Institute.http://cats-fs.rpi.edu/~wenj/ECSE4962S04/final/team2finalreport.pdf?q

Project page:
Kaiser, GH and SO Feibel. “ACA: AEP’s Can Do Anything. A Two-Degree-of-Freedom Ball Balancing PID Controller.”
http://people.ece.cornell.edu/land/courses/ece4760/FinalProjects/f2019/ghk48_sof23/ghk48_sof23/ghk48_sof23/index.html

Video of the project:

Adafruit | www.adafruit.com
Microchip Technology | www.microchip.com
Tower Pro | www.towerpro.com.tw

p.35: Smart Cities Leverage IoT Building Blocks: Chips, Systems and Services, By Jeff Child

Cloud of Things | www.cloudofthings.com
Eurotech | www.eurotech.com
IEI Integration | www.ieiworld.com
Infineon Technologies | www.infineon.com
Microchip | www.microchip.com
NXP Semiconductor | www.nxp.com
Renesas Electronics | www.renesas.com
Senet | www.senetco.com
Semtech | www.semtech.com
STMicroelectronics | www.st.com
Texas Instruments | www.ti.com

p.44: Raspberry Pi Roundup: A Bounty of HATs and Clones, By Jeff Child

Advantech | www.advantech.com
Avnet | www.avnet.com
Hilscher | www.hilscher.com
ICP Germany | www.icp-deutschland.de
Infineon Technologies | www.infineon.com
Measurement Computing| www.mccdaq.com
Renesas Electronics | www.renesas.com
Saelig | www.saelig.com
Sequent Microsystems | www.sequentmicrosystems.com
SparkFun | www.sparkfun.com
Trenz Electronic | www.trenz-electronic.de

p.50: DATASHEET: Embedded PCs: Integrated Solutions, By Jeff Child

AAEON       www.aaeon.com
ADLINK Technology       www.adlinktech.com
Advantech       www.advantech.com
American Portwell Technology       www.portwell.com
Axiomtek       https://us.axiomtek.com
Ibase Technology       www.ibase.com.tw
Kontron       www.kontron.com
Lanner       www.lannerinc.com
OnLogic       www.onlogic.com
Sintrones       www.sintrones.com
WIN Enterprises       www.win-ent.com
WINSYSTEMS       www.winsystems.com

DATASHEET URLS:

AAEON     http://data-us.aaeon.com/DOWNLOAD/2014%20datasheet/Systems/BOXER-6641.pdf
ADLINK Technology        www.adlinktech.com/Products/Download.ashx?type=MDownload&isDatasheet=yes&file=1815%5cMVP-5100-MXM_Series-20200304.pdf
Advantech     https://advdownload.blob.core.windows.net/productfile/PIS/EPC-T4286/file/EPC-T4286-Series-System_DS(081020)20200903164229.pdf
American Portwell Technology     www.portwell.com/pdf/iot/LYNX-6110.pdf
Axiomtek     https://us.axiomtek.com/Download/Spec/en-US/ebox640-521-fl.pdf
Ibase Technology     www.ibase.com.tw/english/ProductDetail/EmbeddedComputing/ASB200-918
Kontron     www.kontron.com/products/systems/embedded-box-pc/kbox-b-series/kbox-b-202-cfl.html
Lanner     www.lannerinc.com/products/intelligent-edge-appliances/embedded-platform/lec-7242
OnLogic     https://static.onlogic.com/resources/manuals/OnLogic-Helix-Product-Manual-V1.pdf
Sintrones     www.sintrones.com/datasheets/ABOX-5210G.pdf
WIN Enterprises     www.win-ent.com/images/stories/download/datasheets/MB-50030_v2_DS.pdf
WINSYSTEMS     https://resources.winsystems.com/datasheets/sys-itx-n-3900-ds.pdf

p.56: EMBEDDED IN THIN SLICES: LoRa (Part 7): Building a Prototype LoRa Device, By Bob Japenga

References:

[1] See this 2011 report on their $293 billion dollar need https://www.cbc.ca/news/canada/canada-s-power-grid-needs-293b-infusion-report-1.1002711
[2] See this article about the government of Ontario lowering the rate from $.802/kWh to $.549/kWh in 2012. They lowered it again later. https://www.cbc.ca/news/canada/toronto/ontario-to-cut-rates-paid-for-wind-solar-power-1.1157717
[3] https://www.seeedstudio.com/category/Sensor-for-Grove-c-24.html
[4] For a very simple but clear introduction to MEMS gyroscopes, check out this article:
https://learn.sparkfun.com/tutorials/gyroscope
The following from ST Micro provides both an introduction (the first 4 minutes) and starting at 10 minutes, the technical background as to how gyroscopes actually measure the Coriolis effect.

[5] For a simple introduction to a MEMS accelerometer, check out this article by Sparkfun
https://learn.sparkfun.com/tutorials/accelerometer-basics/all
And this video by Bosch:

[6] https://store.machineq.com/store/products/area-8c

Arm Keil | www.keil.com
MachineQ | www.machineq.com
Murata | https://wireless.murata.com
STMicroelectronics | www.st.com
Semtech | www.semtech.com

p.60: FROM THE BENCH: White Hot: Measuring Color Temperature: Using an Arduino Mega, By Jeff Bachiochi

References:

[1] https://www.olympus-lifescience.com/en/microscope-resource/primer/lightandcolor/colortemp/
[2]  Inductiveload, NASA, 2007. File: EM Spectum Properties edit.svg. Wikimedia Commons. This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
https://commons.wikimedia.org/wiki/File:EM_Spectrum_Properties_edit.svg
[3] Jeff Kubina, 2008. File:BlacksmithWorking.jpg. Wikimedia Commons. This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license. https://commons.wikimedia.org/wiki/File:Blacksmith_working.jpg
[4] en:User:PAR – en:User:PAR,  2005. File:PlanckinaLocus.png. Wikimedia Commons. Public Domain.
https://commons.wikimedia.org/wiki/File:PlanckianLocus.png

Adafruit | www.adafruit.com
ams | www.ams.com
Espressif Systems | www.espressif.com
Heltec Automation | https://heltec.org
PacTec Enclosures | www.pactecenclosures.com

p.68: THE DARKER SIDE: An Introduction to Stub Filters: A Wire to Nowhere, By Robert Lacoste

Stub
Wikipedia
https://en.wikipedia.org/wiki/Stub_(electronics)

How does a stub filter work?
Chemandy Electronics
https://chemandy.com/technical-articles/stub-filter/how-does-a-stub-filter-work.htm

Coaxial stub notch filter designer
https://www.changpuak.ch/electronics/Coaxial_Stub_Filter_Designer.php

RF Tutorial Lesson 9. Impedance matching using stubs
Content is available under Creative Commons Attribution Non-Commercial Share Alike
http://www.emagtech.com/wiki/index.php/RF_Tutorial_Lesson_9:_Impedance_Matching_Using_Tuning_Stubs

QUCS circuit simulator
http://qucs.sourceforge.net

SONNET LITE planar EM simulator
www.sonnetsoftware.com

Keysight N5230A PNA-L network analyzer
Keysight 33521A 30MHz arbitrary signal generator
Keysight DSO-X 3024A oscilloscope stub filter
www.keysight.com

“Time Domain Reflectometry” (Circuit Cellar 225, April 2009)
https://cc-webshop.com/collections/circuit-cellar-2009/products/circuit-cellar-issue-225-april-2009-pdf

“Microstrip Techniques”, Circuit Cellar 223, February 2009.)
https://cc-webshop.com/products/circuit-cellar-issue-223-february-2009-pdf

Keysight Technologies | www.keysight.com
Sonnet Software | www.sonnetsoftware.com

p.79: The Future of Modular Edge Processing: Three Real-World Intelligent Infrastructure Applications, By Dan Demers

congatec | www.congatec.com

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October (issue #363) Circuit Cellar

by Circuit Cellar Staff time to read: 6 min