My lab doesn't have a wired network. And that makes it difficult to develop on the SAMA5D4 Xplained Ultra board.The only way I am able to move compiled binaries from my Windows development machine to the board is via SCP.But that meant th...
... way down south.I avoid blogging about my job. I'm making an exception for this one time because it's going to impact the challenge:I just came to know that I'll be off to Johannesburg, South Africa, for a work assignment soon. That means that I'l...
I'm continuing with the scope creep exercise.As a preparation to make my Analog Shield talk to the SAMA5D4, I've been testing the on-board ADC functionality.I've also measured the AC and DC signal path from signal source to ADC chip in. Th...
As mentioned in a previous installment Hans was having some trouble installing the secure version of the requests module for python, it didn't matter what he tried there always seemed to be something that needed a different version of a tool inst...
In this post we will have a look at how the client side of the web application is implementedFor the web client I used the Angular JS framework and the graphical components made by Telerik. This components are not free (I have a licence since I...
I've identified an other road block:The RGB LED Lighting Shield uses 10-bit I2C addresses! I found a good explanation here. Should not be a big problem but standard tools as i2cdetect only work with 7-bit addresses. Let's how it works.
Scope creep. It's the dead of every single project.Still I let it seep into my design.Because I received something that I enjoy spending time on. And yes. The date is wrong in the picture above. One of my kids has already remov...
So the genie decided that it would be fun to start learning how to use new tools and build things instead of tiring himself out with using all of his magic. He hopped out of his cramped and cluttered lamp and decided he would need an area to store so...
I am one of those who took the challenge to use the SAMA5D4 from the kit. My take on it is to boot using nfs mounted root file system. This would have the advantage that I would have as much space in the root file system as I need and that I could ea...
A useful presentation on securing your devices Defining the Internet of Things (10:27)Unprotected devices will be attacked (13:15)Encryption (15:46)Single security model for all communications (17:56)Access control (20:13)Tracking device metadat...
While struggling to complete the blood-pressure measurement device, let's have a look about how to show measured value In this project, measures will be communicated to the user in two waythrough a web interface that can be accessed by any devic...
The next challenge for Matilda was a temperature gauge, she'd planned to use an LED bargraph for this but was concerned it would "light up the house like a Christmas tree". Her next thought was a servo driven slider pointing at a scale. There was not...
This update brings you how the clock will personally greet you when you stand in front of (it?, "It" seems so impersonal. My daughter Chrystal has named it "Tic", she says since we are going to make it talk. "Tic - T(alk)&quo...
So there is no real progress on my project this week unfortunately. Being a high school senior in a residential program is difficult to find the necessary tools at appropriate times. I have talked to the engineering professors and have begun to...
Hans was struggling with installing requests[security] the compile issues seemed to keep coming back like a hydra regrowing its heads. To take a break he went to visit his friend Albert. Albert invited Hans in and disappeared into the kitchen to...
Good news, my Yun has arrived. I am not quite ready to move on to the internet side of my project, but it nice to be able to see what I am working with. On the minus side, the Ups shipping notification arrived two days after the Yun, but thankfully I...
Today I've soldered the first prototype of the key fob:Please forgive the very raw prototype. As 1-wire device I've used the DS2401 which provides the ID only (as opposed to my earlier test where I used an EEPROM), because it is the cheapest ...
Ever since the storm Hans and Matilda's power supply had been quite flaky. The electricity company had sent engineers round several times who found and fixed loose connectors and faulty wiring deep in the forest. But the problems kept occurring so Ma...
The blood pressure measurement system revealed to be more challenging than I expected...As a matter of fact, the pulse detection algorithm takes up most of the Atmel 32U4 resources, thus leaving too few time to other tasks. This has some counter-effe...
Today my goal is to cut more gears and other parts of the clock to get it to the assembly stage. This clock will be one of my long desired accomplishments, woodworking is my life and passion. Anyone interested in seeing other creations I have done ch...
One of the enchantments for my 50's turntable is an Arduino Light Organ.The organ uses FFT to calculate the amount of bass, middle and treble in the turntable signal.I'm building a simple signal adapter to boost the tiny pickup coil signal.&nbs...
Wow, half way already!! Here is an in depth update at where Chrystal and I are at. Clock building:This is a slower then hught process, a lot of scroll sawing in making gears. I keep getting tempted with the CNC machine, but this I want to d...
