Member Blogs

Fuelling e-waste: Amos TastySounds AudioLollipop Teardown

stanto

Touted as "Listen to music through your mouth", the TastySounds Audio Lollipop is all gimmick, and depressingly one-time-use. Even if you're handy with an exacto-knife, or your favourite decommissioning tool of choice. These 'sweets' come 'toys' have...
- 19 Mar 2026
Analog Discovery 3 - Impedance Analyzer

kk99

Today I have checked the adapter for an impedance analyzer which I recently received. I previously did some tests using a breadboard during which I manually chose resistors for measurement, but this adapter makes measurement easier, because we could...
- 9 Mar 2026
Analog Discovery 3 - network analyzer

kk99

Today, I performed a quick check of a network analyzer without using a BNC adapter (with differential input). The circuit under test was a simple RC low-pass filter, with a cut-off of around 294 Hz. Here is a schematic with indicated connections for ...
- 27 Feb 2026
Analog Discovery 3 - waveform generator

kk99

The waveform generator built into Analog Discovery 3 has a lot of features, from simple predefined signals to complex custom ones. Today's I wanted to check the sweep and modulation options. The first test was with signal swept from 1 kHz to...
- 22 Feb 2026
Experiments with the relaxation oscillator

kk99

Today, I built a simple relaxation oscillator with the 74HC14 integrated circuit. The purpose of this circuit was to get a reasonably fast rising time pulse generator. Here is measurement from SDS824X HD: It is observable a noticeable ringing. For ...
- 15 Feb 2026
1 Million Points Award

dougw

element14 sent a unique award to commemorate passing the 1 million point milestone. It wasn't expected and not something associated with the Ayrton level (12), but it was a very pleasant surprise. Unboxing Here is a video showing all the swag that a...
- 12 Jan 2026
2025 Summary of element 14 activity - DougW

dougw

Stats as of 2025-12-12 This is an annual summary to link my main blogging activity in the last year. These annual summaries help me find previous work. Vishay microBRICK Road Test - Camera Power Supply Nordic nPM1300 EK & Fuel Gauge Board Road ...
- 12 Dec 2025
Farewell to All element14 Members. I'm Retiring

rscasny

At the end of the week, I'm retiring. What can I say to express my appreciation for nearly 9 years on the community team and managing the roadtest program? It's been a wonderful experience to end my career. I've found my job both in...
- 25 Aug 2025
Black Box Surprise Prize

dougw

Intro This post details the last prize I received for the black box Halloween project. The other prizes for this project are posted here. The last prize was supposed to be a Raspberry Pi 5 4GB, but element 14 actually sent 2 Raspberry Pi 5's, one is...
- 18 May 2025
Forewarned is forearmed and why I can't print

colporteur

I had the network administrators quotidian task of resolving a user dilemma of I can't print. I received the user quintessential response "I didn't do a thing" to questions before taking the printer to my desk to investigate. ...
- 8 May 2025
Epic Waterfall Trip to Test New E-Bike

dougw

Intro This blog is to show the prize I received for my stepper machines project in the Start a Movement Design Challenge and say thankyou to the sponsors. (Analog Devices) The prize is a Wildeway electric bike. (Which was a substitute for the intende...
- 28 Apr 2025
Happy Earth Day 2025 to the E14 Community!

ralphjy

Technically Earth Day here in the US is on April 22 but it is generally celebrated for the whole week. Reminded me of it this morning because I need to watch my son's dog while he participates in a cleanup activity in downtown Portlan...
- 25 Apr 2025
Mystery Project #3 - clue 4

dougw

This is the 3rd mystery project - it might be easier to guess, especially once more clues are revealed, but it may still take a while before the full reveal because there are still a couple of parts apparently coming on a very slow boat. Also I'm not...
- 22 Apr 2025
Mystery Project #2 - Bluetooth Module Programmers

dougw

Intro I'm only playing hockey once per week this month, so no hockey tonight. This means I have some time to get started on a second mystery project. The idea of these mystery projects is to add some interactivity to the project blog by sequenti...
- 19 Apr 2025
Going Down anyone

colporteur

community.element14.com/.../VID_5F00_20250413_5F00_093914.mp4 I am working with a model railroader to use light, sound and/or motion to create animations in an office tower that is over three feet in height. Plastic people miniatures moving through o...
- 13 Apr 2025
Monitoring Bees in Oregon 2025

ralphjy

I posted earlier about putting out my mason bee houses. I haven't been very successful with bees nesting the last couple of years so I thought this year that I would put up a camera to monitor the activity at the bee house. I did a c...
- 12 Apr 2025
Mystery Project #1 - Pi Pico HID Volume Controller

dougw

Intro This is the opening salvo in my 4 project push. Rather than simply presenting a chronological documentary or a report format with objectives and dry design documents, I wanted to make it a bit more interactive, so I presented pictures of the sy...
- 5 Apr 2025
The way I used a COB LED 20W 230VAC

me_Cris

So, what do we have here? The goal is simple, using a COB LED (230VAC!!!) for occasional lighting where needed, good for home use. Natural white in color, and with a power consumption of 20W, this COB LED could not be used safely, and by that I mean ...
- 8 Feb 2025
New home, first lab!

strb

After more than a year of work to tidy up everything, I finally moved from my parents house to my new apartment, living on my own for the first time. With the move, I managed to gain something that I had wished for a long time: a dedicated space for ...
- 26 Jan 2025
2024 Summary of element 14 activity - DougW

dougw

This is my usual year end summary what I did on element 14 for the past year. I use these summaries as a handy chronological index of my content activities. 2024 was a lean year for Project14 with the departure of Tariq, but I compensated by doing de...
- 30 Dec 2024
Building an electronic load for the lab

strb

Introduction One important piece of equipment that is missing in my lab is an electronic load. Lately, I found myself ill so I was forcefully blocked home for few days. I decided to take advantage of this "free time" to try building myself ...
- 15 Nov 2024
Multicomp Pro Desktop Bundle - electronica 2024 - Give Away Competition

e14phil

Multicomp Pro - Give Away Competition Thanks to Multicomp Pro for sponsoring Student Day and our Benchtop Kit Bundle. How to Enter: Join the element14 Community. Visit the competition Page here: You Are Here! Pos...
- 11 Nov 2024
Electronica 2024 - Competitions and Meet and Greets

e14phil

Grüße von der Electronica 2024! 12th - 15th November in Munich we will be live and alive at Electronica 2024. Come Find us! Come catch up with e14phil and mayermakes from element14 presents ...
- 6 Nov 2024
Open-Source Cardiography Signal Measuring Device

milosrasic98

Hi! I started writing on E14 in January of 2018 when I was first year of college, 6 and a half years later and around 70 blogs here later, I've finally gotten my Master's degree in Electrical Engineering! This site was a crucial part of that journey ...
- 26 Oct 2024
Earth Will Get a Second Moon for a Few Weeks Before Heading off into Space

Catwell

Asteroid 2024 PT5 is expected to be captured by Earth's gravity on Sunday, September 29 and leave on Monday, November 25. (Image credit: Wikipedia) NASA scientists have calculated that the Earth will gain a second 10-meter-wide "moon" ...
- 9 Oct 2024