I made a quick test video using Blender to study reflections for the purpose of painting toy soldiers.
It's all connected I swear.  I'm actually surprised there isn't already an app for doing this. 

I was thinking about taking a plane trip, so decided to compare co2 output of various activities.  I thought comparing activities would give some perspective. 

• Powering my flat for a year   Approx 1t (metric tonne) of co2
• Annual car use Approx 10k km 2.8t

So that gives me an output of about 4t.  I've seen different estimates for food but it seems like given my mostly pescatarian diet my diet is probably about 1.5t, so maybe we say my co2 is about 6t.  Average European is about 9, but I drive, heat and eat less probably. 

A return flight  from London to San Francisco is about 0.9T (This seems lower than last time I checked). 

So flying is bad but still much less than driving depending on how often you fly.  Switching to a Tesla Model 3 ( assuming that was practical for me which it isn't yet) would almost half my vehicle co2 emissions.  A VW Polo or similar would split the difference. 

My actual agenda is a speculative trip to Salzberg.  A return flight from Bristol is about .25t and takes under 3 hours.  To go by train I'd have to split the trip over several days which adds in the need for at least one hotel stay, which in itself adds co2 footprint as well as time and stress.  So dunno, but at least I can picture the co2 figures in my head better now. 

The amount of co2 emitted during the construction of a car (petrol or electric) is always small compared to the energy emitted by driving it around.  That has always seemed counterintuitive to me.  In my mind it takes way more energy to design and make the thing than to drive it around, but I'm obviously totally wrong. Moving heavy things around really fast uses lots of energy. 
You can read the whole report here. 

These are pretty much just notes to myself.

• Run the web ide and follow instructions to install the Arduino agent and arduino drivers 
• Download and install the elegoo drivers 
• Select the correct device (Arduino Nano and processor).
• Mod blink demo to run at different rate to the one already on the board and run it.

Well, that turned out to be remarkably drama free.... 
Now I just need to wait for some more pots to arrive so I can control multiple lights from the same board.