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Scott Thornton

An Open Source RTOS for IoT

September 24, 2018 By Scott Thornton 2 Comments

Zephyr open source RTOS

An operating system (OS) is software that supports essential computer functions by managing software and hardware in a computer system. An embedded OS is typically tailored for a specific system and is usually as small as is necessary to do its job. You can find OSes in smartphones, routers, smart watches, game consoles, Alexa/Google Home, […]

Filed Under: Applications, Embedded, Featured, IoT, microcontroller, RTOS Tagged With: basics, FAQ

SSDs: secure erase or sanitize?

September 10, 2018 By Scott Thornton 1 Comment

SSDs

When you’re done with a data storage drive, it’s nice to make sure that all of the data is scrubbed from it. A drive that’s returned, repurposed, or discarded can have personal or confidential data on it. Discarded drives have been found with everything from financial and medical data, email, and even pornography on them. […]

Filed Under: FAQ, Featured, microcontroller Tagged With: basics, FAQ, intel, micron, samsung, sandisk

In defense of the toggle switch

July 31, 2018 By Scott Thornton Leave a Comment

toggle swtich

The world has gotten much fancier with capacitive and resistance touch input on displays, buttons that don’t give tactile feedback, or buttons that do but bounce the input signal on occasion. Buttons are everywhere. They’re on microwaves, refrigerators, garage door openers, smartphones, and inhabit the soul of the electric start/stop for modern automobiles. For designers, […]

Filed Under: FAQ, Featured Tagged With: FAQ

802.11ax: Are we there yet?

July 30, 2018 By Scott Thornton Leave a Comment

802.11ax

Many who develop with microcontrollers have access to compatible Wi-Fi modules. Do you need to be concerned about updating to the latest version 802.11ax when it comes out? The answer depends on whether your MCU will reside in an area where the Wi-Fi access point is typically congested. If so, 802.11ax can help. In short, […]

Filed Under: FAQ, Featured, microcontroller Tagged With: basics, FAQ

IoT via Cellular: Out with 2G and 3G, in with LPWA

July 25, 2018 By Scott Thornton

LPWA

Wireless connections are convenient and cheap to set up, but Wi-Fi, Bluetooth, and other commercially available technologies do not always have the range needed. Wireless cellular is an option, but cellular connections are expensive. A lot of devices use 2G and 3G cellular technologies because they cost less, especially when only little chunks of data […]

Filed Under: FAQ, Featured, microcontroller Tagged With: basics, FAQ

Can you operate circuits at sub-threshold voltages?

July 19, 2018 By Scott Thornton Leave a Comment

sub-threshold voltages

Yes, you can operate circuits below the 0.9 volts where some transistors can run. The result is mind-blowingly low power consumption, as in a full-featured Real Time Clock (RTC) with a supply current below 14 nA (that’s nanoamps). First, some background on how transistors work Transistors operate much like an electronic switch. Apply voltage above […]

Filed Under: FAQ, Featured, microcontroller Tagged With: ambiqmicro, basics, FAQ

Tin whiskers: What happens when they spontaneously erupt?

July 11, 2018 By Scott Thornton 4 Comments

tin whiskers

First reported in the 1940s, Metal Whiskers (MW) are spider-web-thin conductive filaments that sprout (most often) from tin, zinc, and cadmium metal surfaces. A “tin whisker” can be manually formed with poor soldering techniques, but metal whiskers actually grow on their own, too. They are a phenomenon that many engineers are not aware of. Silver, […]

Filed Under: FAQ, Featured Tagged With: basics, FAQ

What is the COM Express standard?

July 5, 2018 By Scott Thornton 1 Comment

COM Express

The COM Express open standard, initially released in 2005, covers Computer on Modules (CO) and Single Board Computers (SBCs) under the auspices of the PCI Industrial Computer Manufacturer’s Group (PICMG), a consortium of equipment and system vendors, component suppliers, and end users for the embedded computer market. Open standards are not open source, but they […]

Filed Under: FAQ, Featured Tagged With: adlink, congatec, FAQ, geautomation, menmikroelektronik, picmg, radisys

SSDs vs. HDDs Part 2: Sand or Rust?

June 2, 2018 By Scott Thornton 2 Comments

SSDs

Solid State Drives (SSDs) are faster, more rugged, and (presently) more expensive than Hard Disk Drives (HDDs). When SSDs are priced competitively to HDDs, we will begin to see every PC equipped with an SSD for long-term storage, because SSDs are suitable for a decade or more of typical consumer use. SSD is just Flash […]

Filed Under: FAQ, Featured Tagged With: basics, FAQ

NFC Tag Basics: How to use for programming automation

May 31, 2018 By Scott Thornton 1 Comment

NFC tags

Near Field Communication (NFC) is a wireless communication technology that acts over short distances for two-way communication. The use of NFC tags is growing in several markets, including the medical, consumer, retail, industrial, automotive, and smart grid markets. NFC is a type of Radio-Frequency Identification (RFID) technology. When two NFC enabled devices are very close […]

Filed Under: Applications, FAQ, Featured, microcontroller, Wireless Tagged With: basics, FAQ

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