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  • Quartz Crystal Frequencies

    March 26, 2025
    Electronics

    Frequency (MHz) comm UART A/V RTC Notes and Primary uses 0.032000 Real-time clock, watches; allows binary division to 1 kHz signal (25×1 kHz). 0.032768 215 allows binary division to 1 Hz. Real-time clock, quartz watches and clocks; common low-speed for microcontrollers. Very common. Available as TCXO.[1] 0.038000 Used with FM stereo encoder chip BA1404 and similar. 0.065536 216…

  • BMI Chart

    BMI Chart

    October 23, 2024
    Health

    Your BMI is calculated by dividing your weight (in kilograms) by the square of your height (in meters). In other words the algebraic expression for BMI is kilograms per square meter: BMI = Kg / (m)2

  • Cockney Money Terms

    October 9, 2024
    Other

    archer = two thousand pounds (£2,000), late 20th century, from the Jeffrey Archer court case in which he was alleged to have bribed call-girl Monica Coughlan with this amount. ayrton senna/ayrton = tenner (ten pounds, £10) – cockney rhyming slang created in the 1980s or early 90s, from the name of the peerless Brazilian world champion Formula…

  • Methods of Moisture Content Measurement in the Lumber and Furniture Industries

    May 16, 2024
    Woodwork

    This brief note discusses methods of moisture content measurement commonly found in the lumber and furniture industries.

  • ESP32 Comparison Chart

    March 6, 2024
    Electronics

    A minimal table to compare the Espressif’s MCU families (ESP8266/ESP32/ESP32-S2/ESP32-S3/ESP32-C3/ESP32-C6).

  • Selecting User Data in WordPress Queries

    February 7, 2024
    MySQL, Wordpress

    Method using JOIN on the wp_user and wp_usermeta tables.

  • Resistor Sizes and Packages

    February 5, 2024
    Electronics

    Resistors are available in a large number of different package styles and sizes. The most commonly used resistors are rectangular surface mount (SMD) resistors, but the older axial resistor is still used extensively in through-hole designs. See the dimensions of SMD, axial, and MELF packages and also some recommended land patterns for SMD components for…

  • Redirect to HTTPS in web.config

    January 8, 2024
    Web

    Add this code to your web.config file to force https.

  • DFPlayer Quiescent Current Fix

    DFPlayer Quiescent Current Fix

    August 21, 2023
    DFPlayer Mini

    The DFPlayer is a great little MP3 player module at a fantastic price, but there’s a really odd design choice; it has a high quiescent current of about 25mA.

  • Farmer Wink 2: “A Yellerbelly Year”

    Farmer Wink 2: “A Yellerbelly Year”

    June 13, 2023
    Lincolnshire

    https://youtu.be/Kzlqom7k-5U

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STEVE MARSDEN

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