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.

Arduino capacitive sensor: Cap-Pad

costantinorizzuti

Want to experiment with new ways to interact with your laptop?Here you can find a possible solution! Here is Cap-Pad (short for Capacitive Pad): the prototype of a control surface based on Arduino and the use of capacitive sensors made with alum...
- 29 Mar 2019
My New Robot

dubbie

Just received my latest robot called Super Fighter, already assembled which is a change for me. I was attracted to this robot as it had a reasonable price, it looked good, it was supposed to walk (which it does - sort of), fire a 'laser', spe...
- 26 Mar 2019
Using 50-Ohm Coax From DUT to Oscilloscope

caroline_teledynelecroy

In our recent exploration of 10x passive probes, we've determined that while these types of probes are great general-purpose tools, they're not necessarily going to do the job in specialized measurement circumstances. They're relatively l...
- 26 Mar 2019
Wemos d1 Battery Shield - charging 18650 Li-on Battery

neilk

When the final long term test of power consumption of my Wemos d1 mini temperature monitoring system was complete: Power Consumption of a Wemos D1 mini ESP8266 - Long Term Test 3 I decided to try recharging the battery - from a mobile phone...
- 24 Mar 2019
Accexlron - a rapid prototyping development board

adarshjam

"Give me 6 hours to cut down a tree, and I will spend the first 4 sharpening the axe!" - Abraham Lincoln The open-source hardware initiative which was started in 1997 has given birth to amazing hardware and software revolutions. The Ar...
- 23 Mar 2019
TinyMoBot #7 : Using a LiPo Battery

dubbie

It has been a few weeks since I last did any work on my TinyMoBot. TinyMoBot #6 : The Transparent Version The battery pack I was using was a 4xAA pack and was much too large to fit inside the glass cover being used. So I decided to p...
- 22 Mar 2019
Do I use a DSP or an FPGA for my Signal Processing?

adamtaylorcengfiet

The world is analogue, although it is best processed digitally. As such, I am often asked what’s the best way to implement the digital processing element? Is it by using a DSP or an FPGA? This blog will discuss this question and provide a pathw...
- 22 Mar 2019
Power Consumption of a Wemos D1 mini ESP8266 - Long Term Test 3

neilk

Having returned from my holiday in the winter sun , I removed the battery from its holder and set about fitting the XH2-2.54mm female connector to the battery holder leads. I then modified the sketch to reduce the drift in the sleep time which i...
- 20 Mar 2019
ArduTrx Update: new HF modules and better documentation

bernhardmayer

During the last months I updated my project ArduTrx which was introduced here: ArduTrx - a 2-meter-band ham radio transceiver with Arduino New HF modules The Chinese manufacturer NiceRF (https://www.nicerf.com/ ) produces HF modules which ...
- 17 Mar 2019
Squeezing More Bandwidth From a 10x Passive Probe

caroline_teledynelecroy

Now that we have a better understanding of what's happening under the hood of a 10x passive oscilloscope probe, we can sum up its key characteristics. The first thing to know about such probes is that they offer relatively low bandwidth (<100 MHz)...
- 15 Mar 2019
Alps Alpine / TACT Switch(TM) for automotive

alpselectric

Today I'd like to introduce Alps Alpine's TACT switches for automotive applications.Introduction movie is available from here. Featureswide range of feeling - selection from sharp to heavyreliable contact - dome with 3 dimples helps reli...
- 13 Mar 2019
Cannot access emails or messages

dubbie

I have a problem with the Element14 web site. Whenever I try to view my emails and messages the number next to the bell turns to a dash and no matter what I do I cannot view any of the messages. Additionally, I cannot create a Blog or look at my acti...
- 12 Mar 2019
Micro DC Motors #1 : A Bit Too Small

dubbie

For my TinyMobot project ( Tiny24hourMoBot #5 : Post Script - Making it even Tinier ) I have been looking for some smaller motors to replace the continuous rotation micro servo motors I currently use. I have ordered a selection of various types...
- 11 Mar 2019
10x Passive Probes and Cable Reflections

caroline_teledynelecroy

We've been discussing the ubiquitous 10x passive probe here on Test Happens, beginning with an overview of the probe-oscilloscope system. We turned to the 10x passive probe itself and the issues posed by its constitutive circuitry. Then we covere...
- 7 Mar 2019
xArm Robotic Arm #5 : Assembled and Working Robot Arm (Sort of)

dubbie

eI have now re-assembled the robot arm more correctly and connected all the wiring together and it is all working, sort of! I downloaded the correct software now as I think the software I was looking at in Blog4 was the right one. LewanSoul make...
- 5 Mar 2019
Zynq: Custom IP IRQ

dhmarinov

Hello there, Recently I had to work with the interrupt features of Zynq and encountered some challenges.Thankfully I managed to solve them so I decided to share the information in case other...
- 5 Mar 2019
xArm Robotic Arm #4 : Wiring and Switch On

dubbie

Having completed the mechanical assembly I moved onto the electrical assembly, which is essentially just the connecting of the servo motors inserial format to the controller and then adding power. However, when trying to wire up the servo motors I di...
- 2 Mar 2019
Quo Vadis - Newark, Farnell ?!

geralds

.... this morning after a good morning coffee...,... then turning on the computer,... then to E14 Review - NXP sensorless engine control Eval kit + engine - going, NXP Sensorless Motor Control Eval Kit + Motor looking for news,.... then aft...
- 1 Mar 2019
How to program a step sequencer with Arduino

costantinorizzuti

How to program a step sequencer with Arduino: in this tutorial we show how to program an Arduino Uno board to realize a 8bit step sequencer.Find out more here: https://www.artislab.it/en/8bit-step-sequencer-with-arduino/
- 1 Mar 2019
Artis Lab

costantinorizzuti

Artis Lab creates electronic musical instruments. We deal with research and development processes about interaction design and sound design to imagine devices allowing to explore new ways to make music. Find out more on our website: https://www.artis...
- 28 Feb 2019
LewanSoul xArm Robot Arm #3 : Mechanical Build Completed

dubbie

I have now completed the mechanical build of the LewanSoul xArm Robotic Arm. Apart from a few quirky bits in the video (only) construction guide I was able to put the whole arm without too much difficulty. There are still a few aspects that I am not ...
- 26 Feb 2019
Power Consumption of a Wemos D1 mini ESP8266 - Long Term Test 2

neilk

Recap In a previous blog: https://www.element14.com/community/people/neilk/blog/2019/02/17/esp8266-power-consumption-further-studies I observed that the power consumed by the Wemos d1 mini during deep sleep was pretty negligible - ab...
- 23 Feb 2019
LewanSoul xArm : Building the Robot Arm

dubbie

There directions for building the xArm are only available on the internet as a sequence of YouTube videos, 15 in all. It is the first time I have used this approach for assembling a robot. The videos seem to be animations of the 3D CAD design and see...
- 23 Feb 2019
Send an Email from ESP8266

neilk

Background In previous blogs, I have described my investigations into using an 18650 3.7V 2400mAh battery to power a Wemos d1 mini ESP8266, via a Wemos battery shield, which plugs directly into the d1 mini, just like an Arduino shield. Whil...
- 22 Feb 2019
Industrial Applications: How NFC is making its way here!

mubeen.abbas

NFC technology is now entering industrial applications, bringing many advantages. NXP is your partner for enabling new opportunities within industrial markets. We provide a broad range of reader and tag ICs supporting the different requirements of th...
- 21 Feb 2019