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  • Amazon Echo Look discontinued...

    ralphjy
    ralphjy
    After she retired my wife got serious about sewing as a hobby.  For Christmas 2018 I got her an Echo Look from Amazon so that she could document and share her projects online.  A lot of people had concerns about the use of this device - it ...
    • 29 May 2020
  • Seeed Studio Robot Kit on Kickstarter

    ralphjy
    ralphjy
    I recently received an email from Seeed Studio about a Kickstarter campaign that they're running for MARK (Make a Robot Kit).  The kit is targeted at teaching robotics in STEM education but it looks like it would also be a fun toy.  I&#...
    • 21 May 2020
  • VL6180X TOF Sensor Repaired

    ralphjy
    ralphjy
    About a month ago I encountered a broken VL6180X TOF sensor board that I was trying to use for my laser focusing project Laser Focus Assembly Completed. The sensor wasn't even responding to I2C address queries which prompted me seek some help fr...
    • 19 May 2020
  • Intel Movidius NCS on Ultra96v2 PYNQv2.5

    ralphjy
    ralphjy
    I saw an interesting project on Hackster ultra96-skin-cancer-ai that uses the NCS with PYNQ on the Ultra96.  I had just finished installing the NCS on the PYNQ-Z2 board Intel Movidius NCS on PYNQ-Z2 and it would be useful to also use it with the...
    • 16 May 2020
  • Intel Movidius NCS on PYNQ-Z2

    ralphjy
    ralphjy
    In a recent comment by beacon_daveabout the upcoming PYNQ-Z2: Embedded Vision Workshops he referred to a project by Jeff Johnson that used an Intel Movidius NCS with a PYNQ-Z1: Setting-up-the-PYNQ-Z1-for-the-Intel-Movidius-Neural-Compute-Stick. ...
    • 22 Apr 2020
  • Happy Pi Day from Hawaii

    ralphjy
    ralphjy
    I did not anticipate that I would be in Hawaii for Pi Day this year.  Unfortunately, it's not for vacation but to do a service plan review for my 97 year old mother who is in an assisted living here in Honolulu.  I'm hoping that I'll get ho...
    • 14 Mar 2020
  • Calibrating My 5.5W Laser

    ralphjy
    ralphjy
    I'm getting ready to try doing some laser cutting with my 5.5W laser that's described in this post: Trying out my laser . I needed a simple way to get the laser focused on the material I'm cutting and I've found that focusing it ...
    • 23 Feb 2020
  • Wii Fit Plus - 4000 days

    ralphjy
    ralphjy
    In today's world of planned obsolescence of consumer electronics products, I am always delighted when I'm able to use something well past its expected expiration date.  It took me a long time to swap out all of my CRTs (TVs, monitors, os...
    • 18 Feb 2020
  • Solar System Performance - 2 year review

    ralphjy
    ralphjy
    I installed a solar system on my roof at the very end of 2017.  I have a description of it in a previous post: Solar System Description . I thought that it would be a useful exercise to examine the performance of the system over the first 2...
    • 16 Feb 2020
  • TS-04 DMM Data Plotting

    ralphjy
    ralphjy
    This is a followup to my previous post: DMM Logging with Web Bluetooth . I wanted to extend the HTML interface to allow me to plot the data that is received via Bluetooth from the DMM.  It seems that nowadays when I want to capture and visu...
    • 15 Feb 2020
  • DMM Logging with Web Bluetooth

    ralphjy
    ralphjy
    I frequently have the need or desire to do some measurement logging when developing my projects.  In most cases this is a temporary requirement and involves measuring voltage, current, or temperature.  The ideal instrument for this would be...
    • 14 Feb 2020
  • Path II Programmable Graduation Awards

    ralphjy
    ralphjy
    I just received a large box from Element14/Newark with my PIIP Graduation Awards.  Thanks danzima and rscasny ! Inside there was a Weller WE1010 Soldering Station and a Fluke 233 True-rms Remote Display Digital Multimeter. The graduati...
    • 3 Feb 2020
  • Evaluating MiniZed with Vitis

    ralphjy
    ralphjy
    I recently attended an Avnet webinar Learn Embedded Design with the MiniZed (Win a MiniZed for Asking Questions!)  that discussed the MiniZed development board and its design ecosystem.  I also just completed the Path II Programmable traini...
    • 3 Jan 2020
  • Makevember Care Package

    ralphjy
    ralphjy
    Just received a surprise care package from E14, I think in response to my Makevember posts. Thanks tariq.ahmad  for the great bit of kit !! A couple of interesting items that I'll need to figure out how to use in a future project:  a s...
    • 22 Nov 2019
  • Pynq on Ultra96v2

    ralphjy
    ralphjy
    I guess I'm easily distracted.  I've been struggling a bit trying to formulate a plan to accomplish my project for Path II Programmable and in my searching I saw that a new V2.5 Pynq image for the Ultra96v2 was just released:  https...
    • 10 Nov 2019
  • Preparing to add a laser to my CNC router

    ralphjy
    ralphjy
    Earlier this year I got a low cost CNC router to complement my 3D printing capabilty.  The Genmitsu 3018 Pro is a great low cost router with a working volume of 300mm x 180mm x45mm and it also has the option on its controller board to use a PWM ...
    • 7 Nov 2019
  • NVR Died

    ralphjy
    ralphjy
    The NVR that I use to store my ip surveillance camera video just died.  it has been running continuously for 14 months.  My experience with electronic equipment that runs 24/7 is that things tend to die in the 3-5 year timeframe.  Usua...
    • 2 Nov 2019
  • Sipeed Maixduino - Prototype Case

    ralphjy
    ralphjy
    I needed to create a 3D printed case for my Maixduino kit to make it easier to handle.  I came up with a quick prototype that I'll need to tweak but it lets me get started with testing. The small cutout at the bottom of the case is for ...
    • 5 Oct 2019
  • Sipeed Maixduino - MaixPy Image Classification

    ralphjy
    ralphjy
    There are a few different tool flows that are available to program the Maixduino.  I previously used the Arduino IDE which allows reuse of existing Arduino libraries for common peripherals. It appears that much of the Neural Network program...
    • 4 Oct 2019
  • Sipeed Maixduino - Arduino IDE Programming

    ralphjy
    ralphjy
    I received my Maixduino AI Kit.  It was nicely packaged in a small plastic box.  The components were neatly wrapped in bubble wrap.The camera was pre-attached as seen in the lower right of the board so the only assembly required was to add ...
    • 1 Oct 2019
  • Sipeed Maixduino

    ralphjy
    ralphjy
    I was inspired by a blog post by clem57 Maix Bit Risc V to get a Sipeed Maixduino.  I had seen a number of different Maix AI kits in the Seeed Studio store but hadn't gotten around to trying one out.  There are four K210 RISC-V developm...
    • 30 Sep 2019
  • CNC - First Try at Engraving

    ralphjy
    ralphjy
    I'm starting to get some experience with my CNC router and quickly learning that there are so many variables due to material, cutting tools, and individual machine capability that there will be quite a lot of trial and error.   As with most...
    • 29 Aug 2019
  • Finally got my Pi4

    ralphjy
    ralphjy
    I wasn't lucky enough to win an RPi4 in the Win a Raspberry Pi 4 in Celebration of Our 10th Birthday! contest and I didn't have time for a roadtest, so I decided to wait until the 4GB versions became widely available.  I started seeing a lot of ...
    • 22 Aug 2019
  • TPL5110 Nano Power Switch

    ralphjy
    ralphjy
    While building my recent LoRaXes project I realized for successful battery power operation that I need a way to remove and restore power between data transmissions because the components that I was using did not have adequate sleep mode functionality...
    • 20 Aug 2019
  • Genmitsu CNC 3018-PRO - becoming useful

    ralphjy
    ralphjy
    I had a minor victory on my road to figuring out how to use my new CNC router. I received the 0.5mm carbide end mills that I bought on Amazon and used one to successfully shorten a proto PCB that I need for my LoRaXes project.  The mill has...
    • 9 Aug 2019
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