A couple of people have asked me to do a separate video on how to use the drivers in Blender so here it is:
The Quick Guide about Drivers - and Black Magic in general.
Keep in mind this is a introductory video and not an in-depth guide on how to use the drivers. I tried to fit as much information into the video as possible, but I had to cut a lot of content because the video got too long.
-------------------------------
If Blender shows an exclamation mark in the top bar and says: "Auto-run disabled", do the following:
1. Ctrl + Alt + U
2. To go 'File'
3. Check the box "Auto Run Python Scripts"
-------------------------------
At 2:13 I mention the different 'variable types'. The top three ones are very self explanatory and the most commonly used (In my experience), but the last one, which is called 'Single Property' is also awesome!
With the type 'Single Property' you can access data like the number of particles in a particle system and the depth of the mist pass in a 'world'.
E.g. to get data from a particle you must pick the particle system you want to get the data from as the 'Prop'. Then you have to go to the particle tab and right click the 'field' with the data/number you want and select 'Copy Data Path'. Now you can paste this data path into the 'Path'-box in the variable under the driver-tab.
-------------------------------
At 5:59 the 'follower' use an F-Curve-modifier to convert the constant rotation of the camshaft into a sine-wave rotation for the follower. I did not explain this in the video because I think it is a bit outside the scope of this video. If you want to use the F-Curve-modifiers with a driver think of the F-Curve-graph like a function where the x-axis is the result of the driver and the y-axis is the result of the function, hence the 'final' value.
