Ragnar Ranøyen Homb

Ragnar makes sure everyone in Norwegian Creations run in the same direction. Besides that, he works with Embedded System Design here at NC, and have also lectured in this discipline at Norwegian University of Science and Technology. So, when it comes to PCBs and overall system design, he is a valuable asset. Ragnar also enjoys woodworking and fine literature.

Posts by Ragnar Ranøyen Homb

3D-printing and finishing

January 7, 2020

Ragnar Ranøyen Homb

3D Printing Projects, Maker Tutorials

When 3D-printing, you typically get visible layers. These irregularities is often desirable to hide. In this post will show you a method you can use to conceal them and finish the part. The Subject and the Plan The model used…

The 2019 Christmas Card

December 6, 2019

Ragnar Ranøyen Homb

3D Printing Projects, LED Projects

Ho ho ho! Is that time of the year again, and we have made a new Christmas Card. As you might see, the Card is rather influenced by our services and what we have made previous years. Electronics The Schematic are…

How to go from an irregular form to a technical illustration

November 21, 2019

Ragnar Ranøyen Homb

3D Printing Projects, Maker Tutorials, Misc. Other Projects

A common challenge is how you can go from a free hand drawing to a more technical correct illustration. In this blog post we are going to show you a process you can use to go from a simple hand…

Measuring Frequency With a Digital Multimeter

November 1, 2019

Ragnar Ranøyen Homb

Maker Tutorials

We have written about using regular Digital Multimeters (DMMs) to measurements common things such as Voltage, Current, Resistance and much more. Those post can be checked out here or here! But in this post we will look deeper into an…

Arduino as a Stepper Motor Controller – Jogging with acceleration

August 28, 2019

Ragnar Ranøyen Homb

Arduino Tutorials

As we have written about earlier: Jogging a stepper motor with an encoder can easily be accomplished with an Arduino. In this post will we show how a simple “stepper motor jogging-system” can be enhanced with acceleration and de-acceleration. Introduction…

Using a simple Arduino to measure capacitor value

August 14, 2019

Ragnar Ranøyen Homb

Arduino Tutorials

As you probably read in this post, capacitance is a measure of the ability to store energy. They are among other things used in rectifiers, as bypass devices and in analog filter circuits. They are super-important components and critical for…

LED Matrix with Rolling Particles – Technical Insights and Finishing Touches

December 14, 2018

Ragnar Ranøyen Homb

3D Printing Projects, LED Projects, Teensy Projects

In our latest blog post we wrote about the enclosure on this “LED Matrix with Rolling Particles”. But how is it to use? And what happens on the inside? Continue to read this post to find out! What Does It…

The 2018 Christmas Card

November 29, 2018

Ragnar Ranøyen Homb

3D Printing Projects, LED Projects

Last year we made a Christmas card heavily influenced by our fields of expertise and what we deliver. This year was no exception! What’s new this year, among other things, is the different design, and that there exists several variants…

Controlling a Camera Shutter Remotely with an Arduino

July 20, 2018

Ragnar Ranøyen Homb

Arduino Projects, Arduino Tutorials

To take a picture on the exact moment you want to can be a hassle. But most cameras have the possibility to use an external shutter remote. Connecting a regular button here does not help us, but by creating a…

Remotely Controlled LED Helmets

February 22, 2018

Ragnar Ranøyen Homb

A few months ago we were approached by NRK (Norwegian Broadcasting Corporation) with a request to create some cool stunts for the annually televised radio show called P3aksjonen. We started brainstorming around several ideas together with NRK. With a short…

How to Load and Save Configurations on an Arduino

September 26, 2017

Ragnar Ranøyen Homb

Arduino Tutorials

We have earlier written a rather deep post about a non-volatile (not lost when power is) way to store data here, but in this post we will focus on the following question: How can I save and load configuration data…

MQTT – What Is It? And How Can You Use It?

July 20, 2017

Ragnar Ranøyen Homb

Software Tutorials

In this post are we going to talk a bit about MQTT and give you a quick example of how you can publish a simple message to a MQTT-Broker from a simple computer system (here: an Orange Pi Zero). MQTT…

Repairing a NAD C370 Amplifier – The Slow Start Protection Module Problem

July 5, 2017

Ragnar Ranøyen Homb

Misc. Other Projects

A very common problem with NAD amplifiers (here: C370) is that it becomes very slow to start after some years (10+). The time between power-on and deactivation of the protection increases to several minutes! And why is this happening? In this…

Building a Large Kossel Delta Printer – pt. 5: A Video from the Building

June 15, 2017

Ragnar Ranøyen Homb

3D Printing Projects, Mechatronics

We have through several posts now followed the making of a rather large Kossel Delta 3D-printer: Pt. 1: Parts and Planning Pt. 2: Building Update Pt. 3: Electronics and Wiring Pt. 4: Modifying the Effector Here is a a “Making of”-video…

Datalogging with a Multimeter

May 12, 2017

Ragnar Ranøyen Homb

Maker Tutorials

A Digital Multimeter (DMM) is a nice tool which we have talked about several times before (you can find an intro on how to use it here). The main usage is to measure something right now. But how can we…