e14 presents blogs

OverPowering my Vacuum Cleaner so that I do not have to throw it away

GreatScottLab

Everyone knows the problem. Electronics get older, slower and less powerful. That also happened to my old vacuum cleaner. But instead of immediately throwing it away, I wanted to try to upgrade it. So in this video you can see my journey of making my...
- 25 May 2023
Arduino, Raspberry Pi, or ??? I'm Hacking Philips Hue Lights and I need your help!

TechnoChic

Hi! It's Natasha. I'm working on my next project for Element14 Presents which involves hacking the Philips Hue Lighting System. I need your help to determine which path I should take - please watch the video for the details of the project: http...
- 1 Mar 2023
Win a Massive Raspberry Pi to Hang on Your Wall! (Winners Announced!)

tariq.ahmad

This contest is now closed! Congratulations to norman you are the winner of the Pi Massive! In the Comments Below: Share a Photo of Where You Intend to Hang the PiMassive! Let Us Know Why You Deserve to Own the Pi Massive! Wesl...
- 16 Aug 2022
Introducing Solas and the journey of creating my own RGB LED Board

lorrainbow

Initial Ideas Over 3 years ago I really wanted a single RGB LED controlled by a microcontroller. I didn't want to add LEDs to a microcontroller, solder them, chain them, wire them up! I just wanted an RGB LED connected a microcontroller. And, as far ...
- 1 Mar 2022
Single Stage, Single Channel Phono Preamp With Power Supply Schematic

airbornesurfer

As I explained in the How Hard Could It Be? video, the first objective in getting sound out of a record player is amplifying the phono-level signal from the tonearm (about 5mV) up to line-level (1V). This pre-amplifier stage uses a low-noise operatio...
- 16 Feb 2022
My Califone Story (Or: Why Teachers Headcount Before Leaving The Classroom)

airbornesurfer

The Califone 1400 Series record players have always held a special place in my heart because they were my first experience with phonographs. This particular model that I've been working on for Project Califone happens to come from the school syst...
- 13 Jan 2022
Califone 1430K Record Player Teardown

airbornesurfer

The Califone 1400 series record players were built like tanks: able to be thrown across a classroom, climbed upon by kindergartners, and still keep playing! Let's take a peak inside and see just how it was built! https://youtu.be/mGkZpxZJ1Ls The big ...
- 10 Jan 2022
Project Califone: Renovating and Rewiring a Califone 1430k Portable Phonograph

airbornesurfer

If, like me, you're of a certain age and grew up in the American educational system, you'll probably recognize this beast: A Califone 1403k "stereo compatible" portable phonograph. Built from the 1960s until the early 1990s, this ma...
- 10 Jan 2022
Converting Apple II video bitstream into HDMI (with an RP2040?)

baldengineer

In the Mini IIe project, I need video output. The Rev 1 shown in the project video relied on the analog video circuit from the IIgs. So I copied and pasted it from the IIgs schematic. (Well, in KiCad 5, you had to copy the file and then edit the sche...
- 9 Jan 2022
Apple IIgs started life named "Cortland," what does it mean and why did it change?

baldengineer

The original name for the Apple IIgs was Cortland. This type of apple has a deeper meaning to the nature of the IIgs.
- 5 Jan 2022
Using An Arduino To Drive A Geiger Counter

airbornesurfer

Traditionally, a Geiger counter like the CDV-700 series is a completely analog device--the device output is driven entirely by the analog electronics. Electrical pulses passing through the Geiger-Müller tube during ionizing events are run throu...
- 4 Dec 2021
A Homebrew Geiger Counter Circuit

airbornesurfer

As discussed previously, a Geiger counter is a fairly simple circuit that takes a high voltage and runs it through the switch-like Geiger-Müller tube and into the meter mechanism. To build a Geiger counter, we need to look at three basic parts: ...
- 4 Dec 2021
How Does A Geiger Counter Work?

airbornesurfer

If there is one piece of technology that is uniquely associated with the Cold War aesthetic (apart from the atomic bomb itself), it is the handheld radiation survey meter depicted in civil defense and popular fiction of the era. The survey meter--typ...
- 25 Nov 2021
Small circuits - Ideas needed for my Fidget Cube!

hifromkatie

Hi all!I'm currently working on an element14 presents project, to make a electronics/engineers fidget cube. What do you think, good idea? My original aim was to make a 1" cube with small circuits on each side, but fairly quickly I realised this was g...
- 25 Oct 2021
E14 Presents - Ball on a Beam - Build Inside the Box 2021

aspork42

Greetings Earthicans! For this write up, I present my project for "Build Inside the Box." This contest was designed to give various makers a "random assortment of components and have them create a project with them. This is somewhat in the style...
- 8 May 2021
Build Inside the Box - Doremino #1 | Concept

embedded_sergey

Hi, everybody! First of all, thanks a lot to the organisers who gave me the opportunity to participate for free!Second, I failed to get it done it time. The box was delivered two weeks ago and it coincided with my exam session in college (actual...
- 7 May 2021
Build Inside The Box - Advanced Bike Computer

vmate

Welcome to my build log for the Build Inside the Box Challenge! This is my first blog/writeup/build on here, so if you have any feedback, please leave a comment!Here are the contents of The Box:- Arduino MKR Zero – Neat little development board, uses...
- 7 May 2021
Build Inside The Box - Sump Pump Alarm

kmikemoo

Thank you Christopher Stanton and element14 for the opportunity to Build Inside The Box! It was great fun. Getting the box was a moment of great joy and great panic as the reality of "I've got to build something!" really hits home. I...
- 5 May 2021
Build inside the box....pt1

robwarren3

I so want to start showing off my talent to create. And my skills being a maker.
- 2 May 2021
Build Inside the Box - James O'G - Build log -Update Sunday 5/2/2021

aspork42

Greetings fellow Earthlings!In this living blog post, I will be documenting the build of my project for Build Inside the Box. See the section headers for the updates as they come. I'm planning to leave any previously-posted stuff alone; otherwise mak...
- 25 Apr 2021
What's in the box! Don't look in the box!

easyejl

Probably that will get tiresome after a while, but dang that was a good movie. And whoo boy after starting looking, I think I might know more about what to do with a severed head than this Mostly it seems that the MKR Zero uses different l...
- 30 Mar 2021
Assembling the Velleman MK171 Voice Changer Kit

airbornesurfer

After a brief departure onto a couple of other projects, I'm back to complete Project Mego--my 2XL-Google Assistant conversion--and I needed to come up with a way to change the voice from one of the stock Assistant voices to more of a robotic sou...
- 6 Jan 2021
How To Repair An 8-Track Player Mechanism

airbornesurfer

One of the first challenges with restoring the 2XL at the heart of Project Mego is repairing and restoring the malfunctioning 8-track player mechanism in his belly. This particular unit has a few broken pieces and a misaligned head, so I'll point...
- 6 Jan 2021
Voice Changer Toy Teardown

airbornesurfer

This segment was cut from the completed project video, but I thought it interesting to have a look inside one of these cheapo voice changer toys that retails for way more than it should. I'm certainly nota531016, but I like to pretend every so of...
- 6 Jan 2021
How To Build A Voice Changer

airbornesurfer

After studying the Velleman MK171 Voice Changer kit that I assembled in a previous video, I wanted to play around with some elements of the circuit to see if I could customize it. In this video, I'll walk through the circuit schematic and explain how...
- 6 Jan 2021