This first picture show a UML State Diagram. I promissed to focus on HMI, but I fancied adding the symbols before I hide these diagrams in the first version. This second picture show a Plain Logic Diagram. I will walk through the interaction between the diagrams and their usage later. As you can see it…
Qt/QML lack an image designer, but I found that using good, old MSPaint worked out well. I have added tools to support various modeling techniques, but will focus on HMI design and automation in this first version. It is a graphical GUI designer included in Qt, but good luck getting something out of that. This…
I like to think about an input signal in the four steps autlined above: 1 – Signal is collected (or received) in raw format. typically sampled on a digital or adc pin in raw format. A 12 bit ADC will have a raw value between 0 to 0xFFFF. 2 – A raw value is of…
This figure show a key principle in modern HMI design. I have only illustrated 2 input signals, but the principle is the same regardless of what signal or what hardware you use. Using a analogue signal as an example you collect that from a sensor or ADC channel. The signal will then be normalized and…
My previous entry talked about coding in QML. I am still on the learning path here, but I am slowly finding my way into QML. It is a steep learning curve, but once you start master the technology it also get easier and the graphical result is the best I have seen so far. It…
This is Qt Creator 4.12. I have worked with Visual Studio for many years, so every IDE get compared to VS. QtCreator does the job as an editor, but it suck as a debugger. Even STM32CubeIDE that uses the same GDB is far better that Qt Debugger. And working with QML you might want to…
This demo is made in Qt using 2D raster graphics and works very well, but performance drops as I start adding animation effects into the screen. Performance was the reason I wanted to try out C#/.NET 4.6.2 and newer which also is much easier to work with than Qt. Performance is different in the later…
I did an attempt of using the 2D raster engine in Qt and while the graphical result was stunning I had to face the fact that performance was not. I moved back to C#/.NET because performance there was better after .NET 4.6.2. With C# I can do 10 x line plots at 40ich frames per…
The wheels above are cool, specially since they can carry a lot of weight. But, the motors are 2 x 2.5KW and the belt driven design is very open making it easy to be contaminated. The powerfully motors are more designed for speed than for driving slowly, but I will optimize that later. Position system…
The plan is to use two separate CAN Networks on my Lawn Mover – one network for motors, and one network for everything else – both using CAN HS at 1Mbps. To do this I consider upgrading XportHub. This picture show XPortHub2 w/2 CAN Ports. ISO1042 is an isolated CAN tranceiver in a SOIC8 a…