The last circular component I want to write about is the Slider – a circular slider. I will build Linear Gauge later and after that I want to do the Real Time Plot – all build component by component.
A Circuar Slider is basically only a needle with a larger Inner-/Outer- Radius formed as a small button rather than a needle + it takes user interface to move the button in a circle. This example show an pointer (Orange triangle) that can be used to set values – threshold values or limits etc. You click on the button and drag it. Me in person I am not that big fan of these sliders because I preffer setting values using edit fields. Doing the same with a visual component can be a bit fiddly to get the value you want – but, they have their usage and is easy to make.