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Frank Milburn's Blog

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Frank Milburn's Blog

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  • The Tin Man - Conclusion

    fmilburn
    fmilburn
    The evolution of the Tin Man:Credits:  Line drawing on left from the original novel by L. Frank Baum and illustrated by W. W. Denslow              Center photograph of the Tin Man ...
    • 30 Oct 2021
  • The Tin Man - Mechanically and Electrically Complete

    fmilburn
    fmilburn
    The Tin Man is now mechanically and electrically complete. Printed Parts I didn't take any photographs during assembly but it was straightforward.  The front and sectional view from the back below shows the parts minus the electron...
    • 25 Oct 2021
  • The Tin Man - Velleman "Voice Changer Kit"

    fmilburn
    fmilburn
    Time for more silliness with the Tin Man.  I have been thinking about what kind of voice he should have and spotted the Velleman Voice Changer Kit for $11. I know it says Whadda on the box but inside the PCB and the instruction sheet says V...
    • 22 Oct 2021
  • NSA1166 7-Segment 6-Digit Bubble Displays

    fmilburn
    fmilburn
    Jameco has these National Semiconductor NSA1166 7-segment 6-digit bubble displays and I bought a couple to distract me from what I should be doing. They are very simple to drive as each segment has its own pin that is driven high and each digit ...
    • 21 Oct 2021
  • The Tin Man - Smooth Moves

    fmilburn
    fmilburn
    Last week I started a series of blogs on making the Tin Man from the 1939 movie The Wizard of Oz.  The progress towards completion has been leisurely but this week's update features the first 3D print and code to add speech and smoothed move...
    • 16 Oct 2021
  • The Tin Man - Getting Started

    fmilburn
    fmilburn
    I've decided to make an animatronic Tin Man loosely based on the 1939 movie The Wizard of Oz for no other reason than I've wanted to for some time.  It seems like it would make a good design exercise.  It would also be someone that ...
    • 9 Oct 2021
  • JFET Static Charge Detector

    fmilburn
    fmilburn
    In a recent element14 Essentials on Static Control, shabaz said this:  "A 2N3819 + meter or LED makes a nice simple charge detector too : )" So, I thought I would try it.  I don't have a 2N3819 but I do have a J112 N-channel JFET.&nbsp...
    • 22 Aug 2021
  • Robot Summer Camp 2021

    fmilburn
    fmilburn
    This is the 5th year I have held Robot Summer Camp for my grandchildren and there were 2 full-time campers and 1 part-time.  They don't really camp, but one has to sleep on the couch :-).   The purpose of Robot Summer Camp is to have s...
    • 31 Jul 2021
  • Been There, Done That

    fmilburn
    fmilburn
    Been There,Done That,Got the T-shirtNext week I get the vaccine  Thanks danzima and tariq.ahmad
    • 6 Mar 2021
  • Testing DC Motors on a Robot with DIY Rotary Encoders

    fmilburn
    fmilburn
    EDIT  2 Feb 2021:  Added explanation for poor matching of motors I have an ongoing project to develop a robot which will use a Raspberry Pi for the main brain and I2C communication with a microcontroller for real time activities such a...
    • 1 Mar 2021
  • Testing the Microchip MCP3421 18-bit ADC

    fmilburn
    fmilburn
    I have what seems to be a continuously ongoing project to measure low resistances with milliohm precision.  The latest version had an inexpensive voltmeter that used the Microchip MCP3421MCP3421 in the display.  The chip costs $2.39 in smal...
    • 22 Feb 2021
  • The Wilson Current Mirror

    fmilburn
    fmilburn
    Recently W2AEW, one of my favorite YouTube bloggers, made a video on the Wilson Current Mirror and the Early Effect in Bipolar Transistors.  He explains things clearly without any fluff so go check it out.  I always understand and remember ...
    • 1 Feb 2021
  • Quick Review: Multicomp Pro Handheld LCR Meter

    fmilburn
    fmilburn
    I am posting my initial impressions of the Multicomp Pro Handheld LCR MeterMulticomp Pro Handheld LCR Meter.  My objectives are to get familiar with the capabilities and use of the meter, do some comparisons to other instruments in my possession...
    • 20 Jan 2021
  • Quick Review: Tenma 72-9380A Handheld Digital Multimeter

    fmilburn
    fmilburn
    This is a quick overview and initial impressions of the Tenma 72-9380A72-9380A multimeter.  A comparison is made to other multimeters I currently own and use.Background I currently own 4 multimeters that I frequently use, one of which has b...
    • 17 Jan 2021
  • New Improved DIY Milliohm Meter V2.0

    fmilburn
    fmilburn
    The milliohm meter has been one of the most popular projects I've posted on element14 judged by views, comments, and stated interest.  Thanks to a modification by shabaz (documented way down in the comments here) and much help over time it appea...
    • 21 Sep 2020
  • Robot Summer Camp with Lego WeDo 2.0 Education Kit

    fmilburn
    fmilburn
    Every summer I do a "camp" with my grandchildren where the theme is electronics and robots.  This year was a bit more complicated due to the pandemic with me moving in the middle of it and not having my electronics lab for several mont...
    • 16 Aug 2020
  • Op-amp made from Discrete Components

    fmilburn
    fmilburn
    Background   A few weeks ago I came across a series of YouTube videos by the IMSAI Guy on an op-amp made from discrete components.  Over a series of posts he describes the circuits that make up a basic op-amp and demonstrates them on a brea...
    • 3 Jun 2020
  • PCB Art:  The Great Wave off Kanagawa

    fmilburn
    fmilburn
    Instead of doing what I should be doing I have been thinking about what kind of art works best for PCBs.  The PCB has a limited number of colors that can be used and also limited resolution.  This leads me to think that wood blocks, posters...
    • 5 Mar 2020
  • PCB Art:  Screaming LM386

    fmilburn
    fmilburn
    10 Feb 2020 Update:  Schematic and Bill of Materials updated In a previous post a method for transferring art work to PCBs was described.  I've been holding off sending it in until a circuit could be designed to go on the board.  ...
    • 29 Jan 2020
  • fmilburn Blog Index

    fmilburn
    fmilburn
    3D PrintingCustom Height Tactile Switch with 3D Printed Cap3D Printed Raspberry Pi 4 Enclosure with Fan3D Printed Right Angle LED Indicators AISAIS Alarm - IntroductionAIS Alarm - The ProcessAIS Alarm - First FRAM StorageAIS Alarm - First Messag...
    • 21 Jan 2020
  • Makevember:  An Animatronic Mechanism

    fmilburn
    fmilburn
    This has been a busy few weeks but tariq.ahmad has requested we publish something for Makevember so I thought I would oblige :-).  I am working on an animatronics project and while I haven't quite made the progress desired still hope to finish b...
    • 22 Nov 2019
  • A Beginning Journey in TensorFlow #7: A Recipe

    fmilburn
    fmilburn
    This is the 7th post of a series exploring TensorFlow.  The primary source of material used is the Udacity course "Intro to TensorFlow for Deep Learning" by TensorFlow.  My objective is to document some of the things I learn along the way a...
    • 24 Oct 2019
  • A Beginning Journey in TensorFlow #6: Image Augmentation and Dropout

    fmilburn
    fmilburn
    This is the 6th post of a series exploring TensorFlow.  The primary source of material used is the Udacity course "Intro to TensorFlow for Deep Learning" by TensorFlow.  My objective is to document some of the things I learn along the way a...
    • 20 Oct 2019
  • A Beginning Journey in TensorFlow #5: Color Images

    fmilburn
    fmilburn
    This is the 5th of a series exploring TensorFlow.  The primary source of material used is the Udacity course "Intro to TensorFlow for Deep Learning" by TensorFlow.  My objective is to document some of the things I learn along the way and pe...
    • 19 Oct 2019
  • A Beginning Journey in TensorFlow #4: Convolutional Neural Networks

    fmilburn
    fmilburn
    This is the 4th of a series exploring TensorFlow.  The primary source of material used is the Udacity course "Intro to TensorFlow for Deep Learning" by TensorFlow.  My objective is to document some of the things I learn along the way and pe...
    • 17 Oct 2019
>
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