VGA signal generation using discrete electronic components

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

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Clap activated 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 Clap activated Nixie tube thermometer – Part 2

Clap activated 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 Clap activated 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 a 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

A long overdue update

So, it’s been quite a while since I published something new and I thought that it’s about time, that I post a short update about what’s going on. I was quite busy working on a robot project and all the articles are already done and sitting around, waiting to be published. But I’m still not fully satisfied with the build, so I guess, that I’ll put this aside for a while and write about different topics instead.

However, here are some pictures of what I’ve come up with so far and I’ll publish the series as soon, as I’m happy with the result.
Continue reading A long overdue update