Legacy Personal Blogs

Please Note:

This blog contains the legacy personal blog posts of our members, other than our Top Members whose content has been migrated into individual blogs in this area. Our new platform does not have personal blogs so this is how we have preserved the personal blog posts of our members from the Jive platform. No new posts will be permitted in this blog. Instead, if you wish to create blog content, please post it in the blog in the most appropriate topic area.

How to get EEG data via Bluetooth from Mind Flex toy

kk99

Mind Flex is toy which allow users to control elements thing in game based on brain-computer interface. It contains NeuroSky TGAM1 chipset which is a single channel EEG with support for UART/Serial communication. By default chipset returns informatio...
- 23 May 2019
Li-Fi with Arduino and Python

RParkerE

Light FidelityBackground:Light Fidelity (Li-Fi) is a wireless communication method which uses light to transmit data between devices. "In technical terms, Li-Fi is a visible light communications system that is capable of transmitting data at high spe...
- 18 May 2019
Keysight IoT Innovation Challenge - I Need Your Vote

jlamb080

Hello everyone, a friend and I have made a submission for the Keysight IoT Innovation Challenge. Please vote for our idea so we can make it to the next round! (link below) https://www.iotchallengekeysight.com/2019/entries/smart-water/130-0512-21...
- 14 May 2019
Priming the Pump

kc4zvw

A place to post future notes about motor controllers. regards, David (KC4ZVW)
- 12 May 2019
My Spanners

dubbie

Recently there have been some blogs about the different tools that various Element14 members own and use so I decided to display my set of spanners and sockets that I have gathered over my lifetime. The ones I like the most are the ones I purchased m...
- 9 May 2019
Op Amps: NIC (Negative Impedance Converter) and the Chua Oscillator

jc2048

Introduction NIC stands for Negative Impedance Converter. It's one particular circuit configuration that can exhibit the phenomena of negative resistance. I'm going to look at that first and then, once we've done that, I'm going to use a pair ...
- 4 May 2019
A Walk-Through of Ground-Bounce Measurements

caroline_teledynelecroy

In earlier posts in this series, we've explained what ground bounce is and how it happens. We have also taken a deeper dive into the use of I/O drivers to implement sense lines that let us better quantify and analyze what kind of ground-bounce hi...
- 2 May 2019
Chaos

jc2048

I've just been playing with Chua's circuit, using a couple of op amps for the negative resistance element.It makes for some pretty XY plots on the oscilloscope. Thought you might like to see them. It's very finicky getting the values...
- 30 Apr 2019
Look what I found

dwinhold

Hi everyone,I was out shopping with my son today and came across an interesting arduino kit. It was on sale for 60% off (regular $99.98 on for $39.49) I haven't opened it yet but will do a review on this product. My first impression is very impre...
- 28 Apr 2019
Project Wumpus CAD files

airbornesurfer

For those of you wanting to build your own replica case, here are the Adobe Illustrator files that I used for laser cutting the acrylic sections. Attachments:community.element14.com/.../ProjectWumpusCase.zip
- 22 Apr 2019
LaserCutter Testfile - For K40 Laser

mayermakes

I recently got my K40 Laser to work and designed a testfile to tune it in for different materials.The File is compatible with K40 Whisperer by Scorchworks. You have to manually dial in the values while lasering to get the desired output.There are 3 s...
- 22 Apr 2019
NXP Sensorless Motor Control Eval Kit + Motor Unboxing

adsicks

Hello Element 14 readers. It is an honor to be back doing another Road Test review. Thank you to Randall and the folks at NXP for letting me be a part of this. I apologize for not getting this unboxing post up sooner. I always forget how crazy t...
- 20 Apr 2019
More on Quiet-Low I/O Drivers and Ground Bounce

caroline_teledynelecroy

Ground bounce can plague digital I/O lines with bit errors and turn your hair grey trying to uncover the cause in the process. But there is a trick you can use to make the analysis a little easier: using a quiet-low I/O driver as a sense line to reve...
- 18 Apr 2019
C++ knocks Python out of top three most popular language

jomoenginer

In the latest TIOBE Index report, there has been a recent rise of interest in the use of C++ again and I have seen this personally through multiple Embedded and Firmware job postings which ask for C++ as a primary language. It is already popula...
- 16 Apr 2019
Capacitive Proximity Sensor Switch

meera_hussien

...
- 12 Apr 2019
avnet mini-itx-7z-asy-g

naresh99

i want know how to generate device tree file in xilinx sdk for mini-itx-7z-asy-g avent board
- 10 Apr 2019
Digital guitar.

alanarnoldguitars

So, here's the thing !Electric guitars, with humbucker pick ups, would usually have 500k ohm analog pots.I want to go over to digital pots, that control the analog signal.But ! I can't find 500k ohm digipots ! 250 k ohm I've found, and then a jump to...
- 9 Apr 2019
Dropwizard Integration Testing with Wiremock

PEarle

A Dropwizard application will often make a call out to another service - full integration testing therefore requires an instance of that service to be available. THis is not always possible, and for compile time testing (e.g. using JUnit) probably no...
- 9 Apr 2019
SonarCube integration with Docker

PEarle

SonarQube is a code analysis tool which can be used as an aid to improving code quality. This page details how I have installed and used it for local development.InstallationSonarQube is available as a docker instance. To pull an image from docker us...
- 9 Apr 2019
NVIDIA Jetson Nano

jomoenginer

I recently received the NVIDIA Jetson Nano Developers Kit I had ordered.https://www.nvidia.com/en-us/autonomous-machines/embedded-systems/jetson-nano/ Now it's time to build a JetBot for running ROS. Let the fun begin.
- 8 Apr 2019
Is it worthy to build a fastest arduino uno or mega compatible board?

mahmood.hassan

suggestions are welcomed...And At what price it will be worthy of buying and using it?
- 5 Apr 2019
About Ground Bounce and How to Measure It

caroline_teledynelecroy

Designing and/or troubleshooting a system with, say, an MCU driving signals across transmission lines, can be an interesting exercise in patience and diligent sleuthing. Perhaps you're seeing an inordinate amount of bit errors at the receive end ...
- 5 Apr 2019
SmartSense - A Smart Assistive System for Blind People

dhairyaparikh67

The storyBlind people face a lot of problems when it comes to commuting from one place to another. All they have for their support is a normal stick, which extends upto just some centimeters, making them prone to falls and hence injuries. Another pro...
- 2 Apr 2019
DC Bias Correcting Amplifier Circuit

rusgray

While working on PCB bring-up for a project of mine recently, I ran across a rather sticky problem: I had neglected to add AC coupling capacitors between the outputs of a single-rail supply audio codec and the inputs of a split-rail supply output amp...
- 1 Apr 2019
UK BS1363 Plug Failures

three-phase

Below I have a shared a couple of videos that were recommended to me on Youtube, from one of the electrical channels on there covering safety issues around badly manufactured IEC style leads. Both are from John Ward who is a well established vlogger ...
- 31 Mar 2019