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I'm road testing the Harting MICA Complete IIoT Starter Kit. It comes with a MQTT Broker Container. It's the heart of most examples available for the MICA. It's installed out of the box on my MICA. But: it is an open service. Everyone that can IP the network can send and get messages (and trigger hardware). I'm not angry. I'm disappointed . It's 2019.   I have two choices - securing the one that's provided by Harting or creating a certificate-protected one from scratch. I chose option ...
I'm road testing the Harting MICA Complete IIoT Starter Kit. In the previous post, I set up the Eclipse IDE and the tool set, and built and debugged the first example. Now - finally - let's create a C program that talks to the I/O lines of the MICA. image source: HAIIC MICA Hardware Development Guide This is the end goal of this blog series (hang on, there's an extra one that shows a solution that uses much less memory and disk space): How to set up an interactive environment where you ca ...
I'm road testing the Harting MICA Complete IIoT Starter Kit. In the previous post, I reviewed the setup of a development Linux container on the MICA. In this post, I'll show how to set up and configure Eclipse on a Windows 10 computer and how you can build and debug an application. I'll start with a simple C++ "Hello, world!" example. When that works, we can concentrate on the last step and talk to a hardware I/O pin.     Install ARM Eclipse DS-5 Community Edition  ARM offer ...
I'm road testing the Harting MICA Complete IIoT Starter Kit. In this post, I continue the work to cross-develop a MICA C application on a Windows computer with Eclipse. This time: prepare a MICA Debian Stretch Container that will run our C executable and talks to I/O pins. I'm using the Linux Debian Stretch Container here - a reasonable lightweight yet complete MICA options to deploy Linux solutions.     In the previous post, I set the goals and expectations of this project: H ...
I'm road testing the Harting MICA Complete IIoT Starter Kit. In this post, I present a cross-compile and cross-debug example that talks to the MICA hardware.   I develop a Linux C GPIO example on a Windows 10 laptop, in Eclipse. The binary is built in Eclipse using a cross-compiler for ARM Linux. The Eclipse debugger then moves the binary to the Harting MICA, and starts a remote debug session. I step through the code from the Windows Eclipse session, while the program executes on the M ...
Now to get on with some performance verification.   Noise Measurements I'm not really set up to do precision noise measurements but since switching frequencies are 10's of kHz, I should be able to get a qualitative look against a 100mVp-p spec.  You can see from the following pictures that the power supply probably doesn't meet spec at lower voltages and has a fair amount of low frequency noise below 1V.  In general purpose use this probably won't cause a problem.  All pict ...
In my haste to evaluate the power supply functions I skipped over reviewing the Product Features and Basic Operation, so I'm going to back up and do that in this blog.   Product Features (from the User Manual) SIngle output switch mode DC power supply Max 30V output voltage, Max 3.75A output current, Max 50W output power Handheld design Fanless cooling for silent operation Four digit LCD display Output short circuit protection High speed dynamic response Automatic protection under ...
Motion Recognition Predictive Maintenance Machine Learning primer How Brainium implements AI features AI Studio Testing Brainium Predictive Maintenance AI Initial learning AI Widget and Rules Creation Anomaly Testing In the previous blog  I have explored the Brainium platform, but I didn’t cover any of the AI features available. I thought that, considering how much relevance has lately been given to AI for this product, it would deserve a blog of it ...
One of the more obvious shortcomings of this power supply is that the documentation is poorly written and inaccurate.  The operational modes of the power supply are reasonably easy to verify, so this probably is not that big of an issue.   The next function that I'm verifying is the USB outputs.  There are two USB A jacks each labeled 5V 2A.  Since the power supply will only provide 3.75A  total, you can't get 2A simultaneously from both outputs.  The outputs are p ...
I've had the chance to play with the power supply a bit and found my answer to the output current capability vs output voltage.  The current limit that you can set is automatically constrained by the output voltage that you select.  E.G. if you have an output current selected and you attempt to set the output voltage to a value that would exceed the 50W max output power capability then the current is automatically reduced to maintain 50W.  The converse is not true, if you have the ...
I just received the power supply unit this afternoon and thought that I'd take a quick look at it.  It arrived in the familiar Newark Element14 box  Thanks to Daniel for the quick delivery.   Inside the packing box was a generic product box.  What surprised me a bit was there was no manufacturers brand (Tenma) on the box.   Inside the box was the PS unit, the AC power cord, a set of test clips and the User Guide.   Another surprise is that there is no power ...

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