Sujet : Re: Need help with PI PICO...
De : tnp (at) *nospam* invalid.invalid (The Natural Philosopher)
Groupes : comp.sys.raspberry-piDate : 26. Mar 2024, 20:50:47
Autres entêtes
Organisation : A little, after lunch
Message-ID : <utv5e7$29onh$2@dont-email.me>
References : 1 2 3 4 5 6 7 8 9
User-Agent : Mozilla Thunderbird
On 26/03/2024 18:16, Ahem A Rivet's Shot wrote:
On Tue, 26 Mar 2024 17:33:50 +0000
Jim H <invalid@invalid.invalid> wrote:
Assuming the "oil" you're talking about is kerosene/heating fuel, the
speed of sound is 1330 m/sec so 0.5cm takes 3.76 micro-sec.
I would have thought it's measuring the distance to the surface of
the oil from above the oil so it would be the speed of sound in air that
matters 300m/s.
Correct, Mrs Shot.
Anyway it's died within 30 minutes of going back on 'short echo'...
So its definitely sensitive to that in some way.
I'll add more debug code tomorrow
-- When plunder becomes a way of life for a group of men in a society, over the course of time they create for themselves a legal system that authorizes it and a moral code that glorifies it. Frédéric Bastiat
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