When you subscribe to an #RSS #Atom feed, what do you expect to find in your reader?
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@jwildeboer I expect the summary to be in the summary field and the content to be in the content field, which is why I hate RSS that puts either in the description field.
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@jwildeboer I expect the summary to be in the summary field and the content to be in the content field, which is why I hate RSS that puts either in the description field.
@jwildeboer also mastodon that treats the summary field as a content warning, subverting the entire point of standardising this in Activity Streams in the first place and preserving that in Activity Pub 12 years later
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@jwildeboer also mastodon that treats the summary field as a content warning, subverting the entire point of standardising this in Activity Streams in the first place and preserving that in Activity Pub 12 years later
@KevinMarks @jwildeboer We are digging ourselves out of that hole, thankfully. For non-Note objects, Mastodon now treats the `summary` like a summary. For Note objects, there's a plan to develop a dedicated content warning property. I think it's fair to say that a summary on a 1-paragraph text is rarely needed, so in practice it should not be blocking progress in AP.
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@KevinMarks @jwildeboer We are digging ourselves out of that hole, thankfully. For non-Note objects, Mastodon now treats the `summary` like a summary. For Note objects, there's a plan to develop a dedicated content warning property. I think it's fair to say that a summary on a 1-paragraph text is rarely needed, so in practice it should not be blocking progress in AP.
@KevinMarks @jwildeboer I'll be frank: the `summary` property is absolutely essential to having a general-purpose AS2 vocabulary; it's a fallback text representation for objects that don't have a user-assigned title (`name`).
Gli ultimi otto messaggi ricevuti dalla Federazione
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@clavoie wow! A big one.
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@drfyzziks aw I LOVE this! Thanks for sharing 🥰
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@gelato_al_pollo Non ne ho alcuna idea.
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Yesterday and today, as is now tradition, the girlfriend and I are playing The Colonists!
And yeah, it's spread over two days with breaks between eras. If you've played, you know what I mean.
#boardgames at home in #montreal
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@evan Hello, my dear brother. May I ask for your help? Could you please repost this for my children? I am extremely embarrassed, but I have no other choice. Please forgive me, my children desperately need your help. They are orphans.
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@aeva gotta dither your home. Can't live with that kind of banding
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Roll Your Own Hall Effect Sensor
If you read about Hall effect sensors — the usual way to detect and measure magnetic fields these days — it sounds deceptively simple. There’s a metal plate with current flowing across it in one direction, and sensors at right angles to the current flow. Can it really be that simple? According to a recent article in Elektor, [Burkhard Kainka] says yes.
The circuit uses a dual op amp with very high gain, which is necessary because the Hall voltage with 1 A through a 35 micron copper layer (the thickness on 1 oz copper boards) is on the order of 1.5 microvolts per Tesla. Of course, when dealing with tiny voltages like that, noise can be a problem, and you’ll need to zero the amplifier circuit before each use.
The metal surface? A piece of blank PCB. Copper isn’t the best material for a Hall sensor, but it is readily available, and it does work. Of course, moving the magnet can cause changes, and the whole thing is temperature sensitive. You wouldn’t want to use this setup for a precision measurement. But for an experimental look at the Hall effect, it is a great project.
Today, these sensors usually come in a package. If you want to know more about the Hall effect, including who Edwin Hall was, we can help with that, too.
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@matz @GustavinoBevilacqua vi tocca imparare a farlo!
(poi nel caso ditemi la ricetta :D )
