3D Printing Day 2015 at FabLab Nordvest

3D Printing Day at FabLab Nordvest

On the 3rd of December it was global 3D printing day, a concept by 3D Hubs, where people all over organize smaller events for the public. I attended the event in FabLab Nordvest in Copenhagen, which was organized by Hulda Jónsdóttir and Lyn Poon.   It’s all shot using a…

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Robot Lab at Gladsaxe Library

Yesterday I was helping out at a small robot building workshop for kids at one of the local libraries, and I made this little video with a few impressions and some of the awesome robots that was made.   It’s all shot using a Nikon D800 with a 24-70mm, f2.8,…

Main image for Joule Thief SMD

SMD version of the Labitat Joule Thief kit

Earlier this year, a friend and I designed a very simple Joule Thief kit to be used in promotion of Labitat and to teach beginners how to solder. The aim was to make it cheap, simple and easy. But as a fun little gimmick, I decided to also add SMD…

atmega8l_closeup

New bootloader file for ATmega8L

When using the LCD I/O Backpack with the ATmega8L-8AU, you need a bootloader that runs at 8 MHz. But the one shipping with Arduino for the ATmega8 has some less than ideal settings, most annoyingly a very long startup delay and a low speed for the serial programming. I have…

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Alternative programming cable for LCD I/O Backpack

Following up with yet another alternative to the FTDI cable or adapter.

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Programming the LCD I/O Backpack with an Arduino

Since the workshop in the beginning of October, there has been a few requests for alternatives to the FTDI USB to TTL level UART adapters. They are a bit expensive, and many of the attendees at the workshop didn’t have one. This post is an attempt to help out those…

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Introducing the LCD I/O Backpack

I admit, it has been a little slow for the past couple of months here on the blog, but that doesn’t mean nothing has happened. For a workshop in Labitat, we needed a really cheap alternative to the Arduino for interfacing between an analog temperature probe and a 16×2 character…

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Using a quadrature encoder as input to FPGA

This time, instead of using buttons to control the servo, we will use a quadrature encoder (I got it from Sparkfun, sku: COM-09117, but you should be able to use more or less any quadrature encoder). The QuadratureDecoder entity This entity reads the signals from the quadrature encoder and maintains…

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Controlling an RC Servo with an FPGA

This time, we will look at how to control a regular RC hobby servo. They come in many different sizes and gearings, but for the basic control, they all use a simple PWM (Pulse Width Modulation) signal, to indicate the desired position. The width of the pulse should be between…

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Learning to program FPGA’s

About two months ago a couple of guys from Labitat (including myself) decided to meet up every other week for an FPGA playpen. I have worked a little with FPGA’s back when I was studying at the university, but have since forgotten most of it, so I will be starting…