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2015
Today was the arrival of the Arduino Yun, thank you very much to all our sponsors.   So Chrystal and I have been busy cutting out a clock and programming the Arduino and LED cape. In order for the clock to keep time we are going to have a sensor detect the minute hand gear for correct 1 hour per revolution. If the hands are out more then 2 minutes it will be corrected by the arduino connected to the servo. We also connected 3 ultrasound sensors to check for movement in the room. If the dis ...
Let's recapitulate: My Enchanted object consists of a sheet of brushed stainless steel with 5 hooks to hang keys. Magnets are used to stick notes to the board. In this blog post I will (try to) design the application as good as possible. Hopefully this can serve as a framework for my (and others) future projects.   User InterfaceI'd like to keep the user interface as clean and natural as possible. No additional buttons and no restrictions should be added. The users should be allowed to hang ...
Many thanks everyone ...
The Woodcutter  Matilda needed some wood for the house extension so she set off through the forest to visit the woodcutter. She found him in a clearing formed by trees that had fallen in the same storm that had damaged the enchanted cottage. "Several trees fell during the storm" said the woodcutter, "but I did not hear them". The wood cutter pointed to the young sapling amongst the fallen trees. "The sapling bends with the wind but the oak breaks" he said. Matilda thought maybe the woodcut ...
One of the most challenging part of this project is to measure the heart beat (and then blood pressure) Hear beat measuring is based on the principle of photoplethysmography (PPG) which is a non-invasive method of measuring the variation in blood volume in tissues using a light source and a detector. Since the change in blood volume is synchronous to the heart beat, this technique can be used to calculate the heart rate. Transmittance and reflectance are two basic types of photoplethysmography. ...
  The first chapter is finished. I started with a defect turntable. It looked good at the start but didn't turn. It hasn't changed on the outside, but the inside is revamped with latest technology. And it spins!     In each of the previous 6 posts I have touched one isolated part of the table. I covered the motor drive part, the speed detection part, and the firmware for each of these modules. In this closure post we'll bring the things together and build the firmware that ...
    The basis for my turntable enchantment is almost done. I'm very close to having a working turntable. Let's have a look at the speed sensor circuit today. One of the very last things to complete for this basis part. The Speed Sensor  The sensor is an infrared opto-coupler. It was component of a 'for parts' video recorder.   I've placed one of those under the stepped pulley of the Perpetuum-Ebner. I painted the underside of that pulley in a non-reflective color. Th ...
In order to detect when the MagicHat is picked up from the docking station, an accelerometer will be installed. The accelerometer I will install is a quite old model, now out of production: the ADXL210. The reason for this choice is that it was the only available in my lab and I decided to use it even if it reminds me one the most disastrous project of my engineering life: a washing machine dynamic balancing device, which reveals to be a self-destroying device... I hope this project will be a bi ...
I would like to start by thanking everyone involved in making this design challenge happen. Things like this are great for the electronics community and are one of the reasons I got insterested in electronics. Thank you.   Problem: I don't check my inbox on Element 14 for new messages at regular intervals. This leads to messages either sitting around for a few days or me checking in to find only an empty inbox. Solution: Repurpose an old analogue rapiest multimeter to display the number of ...
  I'm creating a test setup for the speed sample firmware. In this post I'm reviewing the speed sensing approach and how the Arduino knows how fast the turntable is spinning.     Where should I measure the speed?  There are a number of options. The table has 5 parts where the speed can be measured.   motor: should run at a constant speed all the time, regardless of the selected turntable speed belt: constant stepped pulley: constant idler: dependent on selecte ...
For measuring body temperature, I need a sensor with a 0.1 °C accuracy (i.e. the accuracy you typically have in a thermometer). Unfortunately, the sensor I initially thought of (the Melexis 96104 Infrared thermometer) does not match this requirement, neither do any of the other Infrared thermometer available on the market. The main advantage of a infrared thermometer is that it can make measurements without the need to put the sensor in contact with the skin. Because of this lack of accur ...
"That” said Matilda, "is not good". Hans looked nervously over the top of Network Security for dummies. He knew that tone of voice and the daughter of a miner is not one to be trifled with.   Matilda held up her mechanism and Hans saw the distinct arc transcribed onto the paper. "Oh" he said. Several hours later, later the floor was deep in cardboard scraps and scrumpled paper. Matilda looked despondent. "Perhaps the Historical society might be able to help” suggested Hans. ...
The genie being proud in nature, wished to show off his sweet new crib. He would like to invite all of you to an informal open house, where you can see his sweet new setup, and all his cool furniture. Arduino Yun was the architect of the genies sweet new living quarters. Mr. Infineon was the electrician. He wired the building to be as bright as the sun, but Mr. Infineon was also a good guy and wanted the energy consumption to be minimized, and allowed this through his setup. The lamp itself look ...
  Time for the first electronics post. We're going to drive my turntable motor with the Arduino Uno and the Infineon motor shield.   The Infineon DC Motor Control Shield is connected to the Arduino UNO. The Arduino controls the motor power by sending PWM signals to the shield. The duty cycle of the PWM defines how much power is going to the motor. I'm using that technique to speed up and slow down the motor.   The signal  The Arduino is generating the PWM signal. When y ...
I just found this video about the Arduino Yun on a post from doctorcdf on the Internet of Holiday lights     and another about the RGB lighting shield     There's also a review of the code examples created during that challenge, thanks to jancumps   Compare the Infineon RGB libraries that spawned from the Internet of Holiday Lights   and some more about that shield from shabaz   RGB LED Shield from Infineon - Getting Started Guide RGB LED Shield ...
crjeder

About Security

Posted by crjeder Mar 23, 2015
Basic Security Principles  From the comments to my first post I've learned that there are different perception of security. Therefore I decided to explain when I call a system to be secure. In general security tries to reach following goals:   confidentiality integrity availability and sometimes non repudiation   What does this mean? For short (longer explanation at Wikipedia): Confidentiality means that I am able to keep the data secret. As important is integrity - make su ...
I have done the first trials with the SAMA5D4 Xplained Ultra. My progress is limited: I can connect to the board via a terminal program and execute some linux commands.   I haven't been able to get the SAM-BA utility working and failed to get a dev environment installed on my pc.               Atmel Studio 6.X and me Atmel Studio and myself had a fight.  My favorite search term last week-end was "visual studio invalid license data. reinstall ...
Looks like we're not the only people making enchanted objects   http://www.superclock.info/   "We are building a clock for your home, connected to the internet. The sphere shows you when the next bus is coming."   ...
The way things were Matilda'a father had worked his life in the coal mine so she was no stranger to a bit of hard labour. As a child she'd played at being a miner, smashing rocks in the back yard of their terraced house with a small hammer.   Today she had a much bigger hammer. She'd already supported up the archways with props and removed the old fashioned glass thermometer, so it was just a case of removing the front wall. A bit of persuasion with a sledge hammer and the front wall was t ...
Hi everyone   So my proposal for an enchanted objects is a Mirror, but just not an ordinary one...   The intention is to produce a marriage of an Infinity Mirror, a 23" ish LCD panel and a series of sensors and internet connected IOT feeds both providing and using the cloud to provide local weather on the mirror as well as possibly reminders, a video feed of people coming to the front door so you can see before you open it and of course the LEDs of the infinity mirror can adjust colo ...
  I've completely cleaned and lubed the drive unit of the Perpetuum-Ebner. All old grease and oil has been removed with isopropyl alcohol (we call it isopropanol down here). All parts that needed some grease or oil have been serviced. The table is spinning very smoothly at my desk right now, powered by a motor from an old video recorder.     With that in place, it's now time to start working on the motor control. She's going to be driven by the Infineon DC Motor Contro ...
This week we received a welcoming parcel from Element14!! The parcel contained, Atmel SAMA5D4 Xplained Ultra, Arduino RGB LED Lighting Shield, Arduino DC Motor Control Shield  and the Arduino Workshop Livello Kit. We are still waiting for a couple of items but this is a great start, nothing will be holding us up.   I have started on making the clock. I am using plans purchased from Clayton Boyer Clock Designs ("The Simplicity"), I have had them for years now. This will be quite a proj ...
Following pettitda instructions  Atmel SAMA5D4 Xplained Ultra Road Test -- Day 3 I installed the USB driver, and hooked my SAM to the USB of a windows machine, connected with putty....and... hello there! Note that I did not have to change flow control to "none", just changed speed to 115200 and set correct port. "root" account is without password. Had a look around, by running: uname -a Linux sama5d4-xplained 3.10.0-custom #1 Thu Oct 30 16:04:45 CST 2014 armv7l GNU/ cat /etc/issue  ...
Planned obsolescence is one of the biggest problems in today's technological products. Things get rotten, dusty, forgotten and lost of their initial use, becoming part of a pile of not good enough's even before they are meant to be like that. However, old stuff like mechanisms from the 60's still work, brilliantly in some cases! And yet, they have been replaced with better, more useful but less durable devices. That is why this challenge is so great, giving life back to those things that hold ...
  57 years old grease  Like all mechanical devices, this turntable needs servicing. And it hasn't had any since it left the Black Forest. I've taken the whole drive unit apart. Every part is going to get cleaned and every bit if old grease, gunk and oil will have to go. I'm carefully checking what parts have been greased or oiled, because I should only apply new lubricants where needed. Only one thing is worse than a badly greased turntable: one that has lube on parts that should be le ...
Project backgroundI am a (software) engineer and an espresso coffee enthusiast. As a result, I could not settle for an ordinary instant capsule coffee with hightech chemistry but without real smell and taste of proper coffee (i.e speciality coffee). So I got myself an  old school professional espresso coffee machine, revived it and I am enjoying quality coffee at home... well kind of. These old heat exchange espresso machines, require expert handling, to produce decent coffee. It's not like ...
First of all I want to thanks element14 and sponsors for selecting me as competitor in this awesome competition. Here I want to share some ideas about my project enchanted windows.       1) It can be opened or closed remotely from anywhere. All the windows and curtains in our house can be closed by a single button in our mobile app, when we are leaving from home. Also we can know status (open or close) of any window.       2) It can we used as morning alarm. Window ...
rpbruiser

Wish One Was Granted

Posted by rpbruiser Mar 19, 2015
As I sit at my desk, alone in the dark, I remember wishing that there was someway I could make my dream of a magical lamp, that fulfilled all my wildest dreams a reality, rather than just another picture on a piece of paper somewhere in the landfill. Well apparently I had rubbed my lamp because just like that                                 ...
There was a knock at the door and a from behind a pile of parcels, a muffled voice said, "delivery for the enchanted cottage". "That's us" said Hans and Matilda simultaneously. All of the components except for the Yun had arrived safely, "what's in the box from CPC" asked Matilda? "Oh that", said Hans, "that's a sellotape holder, I ordered before Christmas which was out of stock". A big thanks to Christian, Joseph and everyone at Element14 and Atmel who have been involved in setting up the D ...
crjeder

Fairy Dust has arrived!

Posted by crjeder Mar 19, 2015
Today in the mail I found a parcel by Farnell - The Fairy Dust has arrived! Also in the mail: The first of the items I ordered for the competition: RGB LEDs with integrated controller.   Now I take the first challenge of the competition: Install Linux on the SAMA5D4.. from what I've red in the RoadTest this won't be easy! ...
  One of the most difficult tasks for a doctor is to divert a child attention while trying to make an injection. And what's better than something magic to entertain a child?   So for this challenge I thought of building a magic hat.   The magic hat will be able to read a child's mind. Under the hood (literally) there will be an health diagnosis system capable of measuring body temperature, heart rate and blood pressure.   To add something real magic, the magic hat will spe ...
It turns out that element14 is not the only place where people are talking about making ordinary, or obsolete, objects extraordinary, enchanted objects. (Hint: Take a look at our Enchanted Objects Design Challenge and what our challengers are promising.) There's a new, free app in town from Camio, a new business.  It magically makes old Android or iphones into Internet friendly surveillance cameras. This is one of many new persectives on the Internet of Things. This app doesn't in ...
Chrystal and I would like to thank all the sponsors, Element14 and everyone involved for choosing us to compete in this challenge.   Our enchanted clock is going to be very special. The clock is going to be hand made by Chrystal and myself, all made from wood (recycled wood). All the working parts are going to be made from wood as well (Gears, hands, weights etc.) I am a cabinetmaker by trade and need a new challenge so building a wooden clock fit right into this challenge perfectly.   ...
  I own a defunct turntable from the fifties...  I started the story with a lie. I don't own it. It's not mine. It happens to be in my mansion but it belongs to someone else. It's a Perpetuum Ebner Musical 1. If you are into beautiful designed products, you'll like the looks:     And I'm going all medieval on that machine that's not mine. It is currently in non-working condition. It must have been in a non-working state for tens of years. And I'm not making it any bette ...
Introduction:   Thank you element14 community, organizers, sponsors for selecting my project making it eligible for "Enchanted Objects" design challenge, enabling me to test my skills and knowledge to convert everyday dumb objects in smart enchanted objects. This is my very first design challenge and I wish to make each blog post count specially focusing on the people who would like to replicate my projects for their personal use or improve them with their creativity. So lets get started. ...
Introduction  I would like to thank the organizers and sponsors of this challenge and for giving me the chance to take part and learn. This is my first challenge and will be my first major programming project in at least 10 years and my first electronic design in more than 20 years. So please be patient with me, I might have a rather slow start. So why is such a total noob as I am entering such a challenge? In the detailed description for the challenge Pat Kelly writes:   „el ...
rpbruiser

The Magic Lamp

Posted by rpbruiser Mar 16, 2015
Late one night... You are sitting at your desk, doing your work in the late afternoon. Its a beautiful day outside and your desk is by a door, there is no need for you to have your lights on. But the sun begins to set, and you are stuck in the dark, too immersed in your work to get up and turn on the lights. Fortunately you have a magic lamp! This lamp has the power to know when the sun is setting and turn itself on.               ...
Once upon a time Deep in the forest is a small cottage owned by a timeless couple, Hans and Matilda who are doomed never to meet. When it is wet he goes outside but when it is dry she must leave the house. They lived a happy life in their cottage however and had regular visitors who were interested to know what they could tell them about the weather. The storm  One night there was a terrible storm and Matilda was scared and hid in the back of the cottage. Outside Hans was transfixed as the ...
Note: Read more about the competitors and their projects by clicking here. Thank you to all who applied for the Enchanted Objects Design Challenge - you gave a lot for Atmel and element14 to mull over.  After a tough set of decisions, we are pleased to announce that the fifteen competitors for the challenge are as follows: Andy Clark Jan Cumps Samuel Doye Parker Ellwanger Ambrogio Galbusera Tanausú Hernández Christian Lorenzoni Rob Nagy Manolis Nikoforakis Peter Oake ...