Global Warming

In early spring this year (March – mid-April) conditions were good for flying; light stable winds with sunny days and rainy days all forecast accurately days in advance.  The net of this was lots of test flights, lots of videos, and the only downside was the need to put Hermione’s HoG RPi B3 and PCB in a customize Pimoroni Tangerine PiBow to try to keep temperatures in the IMU above 20°C where its sensor offsets and gains are most stable.

In the second half of spring, the temperature soared to the high twenties / early thirties; there was no breeze and no rain; the weather was Mediterranean midsummer.  The lawn was starched and featureless for the down-facing lateral-motion tracking RPi camera and so flights moved to the gravel drive; more damage to the props ensued but progress was good.

It’s now nominally mid-summer here.  The weather’s moved to blustery showers, torrential rain storms, wind speed in the teens and sometimes gale force, with bursts of thunder and lightening and to make it worse, it changes every half an hour.  The temperature is mid-to-high teens. It’s standard autumnal weather in all but name, and it’s impossible to fly in; I get my kit out in bright sunshine and low twenties with no breeze, and by the time it’s set up, the sky has clouded over threatening rain, the wind has risen into the teens and the temperature has dropped into the teens.

Why am I telling you?  Because now, I’ve pretty much finished the GPS routing branch code, and in doing so, I’ve spotted a couple of fixes / enhancements I’ve back-applied to the main line; if I’m right, I may have fixed the feature where Hermione always faces the way she’s going rather than the direction she was pointing at takeoff: to change her direction of flight, she continues to fly ‘forwards’ from her point of view but she yaws her body round to point her nose in the new direction.  Completely pointless really, just another challenge to tick of the list.

Here’s to decent English summer weather again so I can post something that might actually be interest to you, dear readers!

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