VGA signal generation using discrete electronic components

Note: An updated version of this article is available here! However, this article remains valid and I placed a note in every section that got updated.

It’s been a while since I published this series of articles on nerdhut about monochrome video signals for an old Macintosh CRT. I wanted to post a short follow-up article about VGA and how to generate such signals. This article will also be a follow up to the custom CPU series and it will be another step towards the custom computer, I always wanted to design and build.

However, in this article, I only want to take a look at how the standard 640×480@60Hz VGA-Signal can be created using a screen testing device, made from discrete electronic components, which can be used to test monitors without the need of a computer being around. Continue reading VGA signal generation using discrete electronic components

Nixie tube thermometer – Part 2

In this part of the series I’ll discuss how to read data from the temperature sensor, make the Arduino react to claps and I’ll also go over the software that controls all these features and then displays the right numbers on the Nixie tube display. Continue reading Nixie tube thermometer – Part 2

Nixie tube thermometer – Part 1

Years ago I bought a bunch of IN-14 Nixie tubes from the Ukraine and I had them lying around since then. I always wanted to use them for a custom device and so I decided to finally tackle this project and build something that utilizes this almost ancient way of displaying digits, but for now I didn’t want to build a Nixie tube clock (I thought that was a bit of a cliché thing to do and for now I’ve had enough of fancy hipster clock projects), so I thought: Why not build a thermometer for my room that can be activated by clapping? Continue reading Nixie tube thermometer – Part 1

USB volume knob for Windows, Mac OS and Linux – Part 1

In this article I want to take a look at the Atmel ATmega32U4 8-Bit microcontroller, which has a USB 2.0 controller built-in and therefore should enable anybody to make their own USB compatible HID devices. I’ll try to show the process by building a USB volume knob, which will allow the end-user to change the volume or completely mute all sounds on the device it is connected to. Continue reading USB volume knob for Windows, Mac OS and Linux – Part 1

How to connect your Arduino to the Internet with the ENC28J60

I’m currently working at a custom messaging system, which will users to exchange encrypted messages. To achieve this I bought an ENC28J60 powered ethernet module, which can be used to connect an Arduino to the Internet (or any other microcontroller that supports SPI). In this short article, I want to show you how to connect this module and get it up and running in no time! Continue reading How to connect your Arduino to the Internet with the ENC28J60

PlayStation VR Test and Review

Due to the upcoming release of Skyrim VR this Friday (17th of November) I decided to get myself a PlayStation VR headset, which is the cheapest proper VR Headset currently available with prices starting at 350€ for just the Headset or 400€ for the starter kit which contains the Headset, two motion controllers and the PlayStation Camera. I wanted to share my experience with this system and tell you about some tips and tricks that I discovered during usage. Continue reading PlayStation VR Test and Review

DIY electronic riddle advent calendar

Oh yes, Christmas! It’s almost that season of the year again. And to shorten the time between the 1st of December and Christmas Eve’, I thought about a bit more interesting advent calendar than one, that only has chocolate in it. This electronic advent calendar offers a riddle that you can create for a loved one or a friend and give it to them so they can try to solve it before Christmas arrives. It offers a clue every day and it presents all unlocked clues on a website that runs on the device itself. The only two things it needs to work is a power supply and a WiFi network it can connect to. And the best thing is: It is really simple to build and it can be re-used every year and it can also be used for other occasions (for example Valentine’s Day)! Continue reading DIY electronic riddle advent calendar