This is the third 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 the things I learn along the way and perhaps ...
This is the second of a series exploring TensorFlow. Since I have no training in machine learning it does not consist of tutorials but has links to the material that I am using. I use my Windows PC to train models and plan to use a Raspbe...
This is the first of a series exploring TensorFlow. Since I have no training in machine learning it will not consist of tutorials but will have links to the material that I am using. I plan to use my Windows PC to train models and ultimat...
While building the Rainbow Ukulele this last week I was reminded of another project from quite some time back. About 20 years ago I was in a large music store in Houston and saw a used Fender Jazz 5 string guitar neck in good condition without ...
In a recent post by shabaz a clever method for lifting tactile switches up to the correct height to fit an enclosure is described. There is also a useful list of switches with caps that fit. That post inspired me to revisit a method I hav...
UPDATE 31 August 2019: See my RoadTest of the Raspberry Pi 4B using OpenCV to do face recognition hereUPDATE 23 August 2019: This is an update of an earlier post about a RoadTest of the Raspberry Pi 4B with a comparison to the Raspberry P...
Introduction This is the follow-up to a post about a simple programmable DC electronic load. Progress has not been as good as hoped and the project needs to be set aside for the time being so other priorities (like a RoadTest and life in g...
Introduction In this blog, the features of three popular oscilloscopes marketed as being entry level will be reviewed and compared. Keysight DSOX1102G hereafter referred to as KeysightRigol DS1054Z hereafter referred to as RigolSiglent SDS ...
I was fortunate recently to win the Experimenting with Polymer Capacitors competition here on element14 and have also been successful in several RoadTests and Project14 contests. Other successful element14 members have published their entries a...
This blog has no other purpose than to encourage passing on some of our knowledge to the next generation. Every summer my grandson and I get together for a week to "do electronics" as he calls it. Robots are always involved. T...
9 August 19 Update: 8 July 19 Update: A protoboard was populated for further testing and described at the bottom of the post I have wanted to build a programmable DC load for some time and have followed both this one by Jan Cumps et....
I have used right angle LED indicators on a number of projects in the past and have a small collection of them.The problem with such things, even were I to have a larger collection, is I never seem to have the right one when I need it. In the p...
This is a refresh of an old project I did and posted elsewhere quite sometime back. I am publishing it again so that I can point to it for an upcoming project if needed. That project requires a square wave and thought I would see how well this ...
EDIT 24 Oct 2018 The schematic in this post contains an error. It will be reposted after receipt of the PCB and testing. I am developing an inexpensive but reasonably accurate meter for measuring resistance in the milliohm range.&nbs...
I am developing an inexpensive but reasonably accurate meter for measuring resistance in the milliohm range. The three previous posts are listed in the related links at the bottom of this post. In this post a working prototype is presente...
IntroductionThis is the third post on the development of an inexpensive but reasonably accurate meter for measuring resistance in the milliohm range. In the first post a simple current source was described that created a 10 mA current across a ...
IntroductionIn my last post I described a simple circuit that produced a reasonably accurate 10 mA current source to allow measurement of DC resistance down into the milliohm range. I received a number of helpful suggestions on how to imp...
IntroductionI was inspired by a recent post from shabaz on Building Kelvin (4-Wire) Test Leads. Shabaz explains in detail and with clarity why measurement of small resistances with the two leads on a multimeter is difficult. This got me t...
In this blog I intend to outline a reasonably simple way to control Wi-Fi enabled Arduino compatible boards and single board computers like the Raspberry Pi or Beaglebone. In addition an Apple or Android device that can run the Google Assistant...
UPDATED August 24, 2018 at the bottom of the post with parametric data at different voltages and gains I have a project in mind that will require op amps and have been testing the Texas Instruments MSP430FR23xx microcontrollers with built in op ...
As noted yesterday I have a project in mind that would use operational amplifiers. Several manufacturers have microcontrollers with built in op amps and yesterday I took a quick look at the MSP430FR2311 from Texas Instruments. Today will ...
I have a project in mind that requires operational amplifiers. Recently Texas Instruments has released several microcontrollers that have low power precision op amps built in. I have two in hand now that I will be testing - the MSP430FR23...
The Element14 community was kind enough to award me a prize in the Open Arduino contest and with the award I purchased one of the official displays for a Raspberry Pi. I have wanted a portable marine traffic monitor for some time and this is wh...
Now that the TI-RSLK robot RoadTest is finished I have turned my attention back to a problem spotted in the last round of PCBs ordered for the AIS alarm project. But first, I have a new toy.I have been looking for the right used Nikon microscop...
I was able to attend an interesting "hacker" camp last week and thought it worth a post. ToorCamp is advertised as "The Five Day, Open Air, Tech Camping Event where you create more than just ideas and build more than just inventi...
