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Hello everyone!
I'm trying to draw a ball using canvas. On that ball is a line (great circle) which when looked at 'head on', it looks like a straight line. If I rotate the ball 90 degrees (what I intend to simulate), the line would become and arc of varying radius, going from infinity to the radius of the sphere (origilal circle used to draw the ball). The problem is, as far as I know, only way to draw arc on canvas is with angle start, angle extent and centre, in this case, all unknowns. So, how do I draw that arc? Use some other drawing method?
Can anyone help with this one?
Thanks.
The Galaxy S4 has so many amazing sensors! Magnetometer, Proximity, Ambient light, Gyroscope, Accelerometer, Barometer, Thermostat, Humidistat, Infrared!
The barometer is the most exciting to me because I build pressureNET, a global network of Android phones reporting atmospheric pressure and current weather. This project is open source and we're hoping to grow large enough to get meteorlogically significant data, which should allow us to improve thunderstorm forecasting significantly. We're collaborating with atmospheric scientists at University of Washington who are currently receiving a livestream of or data. We're currently receiving about 11,000 measurements per hour. Check out our blog at cumulonimbus.ca.
What other ideas do you have? This is Star Trek right here. What else can we build with this incredible sensor array?
This thread deserve a bump.
Seems like a lot of extra stuff taking clock cycles due to polling. Any way to turn some of that stuff off if you want?
rushless said:
Seems like a lot of extra stuff taking clock cycles due to polling. Any way to turn some of that stuff off if you want?
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Where did you find this information? I haven't seen anything like that so far.
I also am interested in how the temperature and humidity sensors will be used. I hope developers can figure out interesting applications.
I downloaded a few barometer apps for my Note a year back but they didn't seem that useful. I will definitely try out the pressureNet app; it sounds quite interesting.
I made a Weather Station app that utilizes these sensors a while ago and is available at Google Play for free:
Weather Station
In regards to the OP, globally collecting information from these new sensors I think has minimal value. First of all the sensors are not stationary, second they reside inside of pant pockets most of time. Atmospheric pressure may have some value but it is not useful unless you adjust for elevation (which my app does).
I for one and curious how the humidity and temperature sensors will function in practice.
How exactly will they compensate for being in my pocket, hand, etc?
Sent from my SGH-I777 using Tapatalk 2
Shammyh said:
I for one and curious how the humidity and temperature sensors will function in practice.
How exactly will they compensate for being in my pocket, hand, etc?
Sent from my SGH-I777 using Tapatalk 2
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Simple answer, it won't.
Look at this video and go straight to 13:40 where the reviewer both shows and mentions the inacuracy as a a temperature gauge.
http://youtu.be/diLD42QafIo
Beards said:
Simple answer, it won't.
Look at this video and go straight to 13:40 where the reviewer both shows and mentions the inacuracy as a a temperature gauge.
http://youtu.be/diLD42QafIo
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Could have been a bad case of early-softwareism.
Toss3 said:
Could have been a bad case of early-softwareism.
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Possibly but it's my guess this is a pretty standard if not crude gauge. I doubt it has the capacity to offer variables or degrees (pun intended) in working out temperatures from pockets to real room, let alone being a bog-standard gauge.
Beards said:
Possibly but it's my guess this is a pretty standard if not crude gauge. I doubt it has the capacity to offer variables or degrees (pun intended) in working out temperatures from pockets to real room, let alone being a bog-standard gauge.
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It's more likely that it's reading Celsius and the developer didn't convert it to Fahrenheit. It is that high b/c of her hand (body temperature is about 36-37 Celsius) and if she left it alone on a table it would probably register close to room temperature.
The idea of compensating for a hand or pocket is impossible. Therefore, the quality of the temperature sensor can be based only really on how long it takes to register temperature changes.
jsstp24n5 said:
It's more likely that it's reading Celsius and the developer didn't convert it to Fahrenheit. It is that high b/c of her hand (body temperature is about 36-37 Celsius) and if she left it alone on a table it would probably register close to room temperature.
The idea of compensating for a hand or pocket is impossible. Therefore, the quality of the temperature sensor can be based only really on how long it takes to register temperature changes.
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Agree, not even sophisticated temperature gauges have an ability to ascertain heat outside of it's own source. It would require a sensor to be placed directly where it needed to relay the information back to.
If you want to see an app that utilising the baro sensor and gps, check out xcsoar flight software, where altitudes have to be barometric for airspace levels.
Problem in thermo hygrometer Sensor in S4 I9500-Please help
jsstp24n5 said:
I made a Weather Station app that utilizes these sensors a while ago and is available at Google Play for free:
Weather Station
In regards to the OP, globally collecting information from these new sensors I think has minimal value. First of all the sensors are not stationary, second they reside inside of pant pockets most of time. Atmospheric pressure may have some value but it is not useful unless you adjust for elevation (which my app does).
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Sir I have installed some custom ROM.
After that I lost my Thermo hygrometer sensor on S4
The readings are like this after running HWModuleTest:
ACC RAW COMP
0 34.48 0
Before installing rom the readings were
ACC RAW COMP
3 34.48 16.7888
This means that something happens to thermo sensor.
Please help How can I correct that.
From where I can get back these ACC and COMP values.
Please help me soon.
I'm not the person you quoted, but the simple answer is to go back to stock, if you haven't already done so. Your custom ROM possibly doesn't support the sensors.
I am very disappointed with the Samsung Barometer/Altimeter app, The barometer only registers in whole inches of mercury. All watches I had in the past, register in hundredths of inches of mercury. I wonder who else feels the same and would like Samsung to fix this error or maybe a developer could create a replacement app.
Edit: They finally updated the app and it shows the barometric pressure in 100th of a inch of mercury. Big thumbs up
dhonzik said:
I am very disappointed with the Samsung Barometer/Altimeter app, The barometer only registers in whole inches of mercury. All watches I had in the past, register in hundredths of inches of mercury. I wonder who else feels the same and would like Samsung to fix this error or maybe a developer could create a replacement app.
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I agree. Hopefully Samsung does address it. Meanwhile I found a free app called "FBarometer." Just search/install via Gear app. Seems pretty accurate, doesn't register in hundredths but does do tenths so a step up from wholes inches at least.
I have a feeling Samsung rushed to get this watch out (obviously, everythings backordered now it seems).
I have a feeling there will be many updates in the near future. At least I hope so.
If you touch the barometer to display the trend look at the outside ring, the barometric pressure is displayed gauge style with a red dash marking the pressure and the units are to the hundreds place. It's still not great but you can at least tell the difference between 28.5 and 29.
I live 77m above sea level and my watch shows -97m, a bit out me thinks.
Barometer and altimeter are useless. I live between - 90 and plus 154 meters, in Amsterdam which is - 3. Consequently also the floor counter is facked up.
dhonzik said:
I am very disappointed with the Samsung Barometer/Altimeter app, The barometer only registers in whole inches of mercury. All watches I had in the past, register in hundredths of inches of mercury. I wonder who else feels the same and would like Samsung to fix this error or maybe a developer could create a replacement app.
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You can use another very good app called Barometer & Altimeter. I use it when go mountain. I talked to author this app before download it. It was tested by a few climbers and created with help mathematicians and physicists. The measurement error is < 1%. It is better than my stock altimeter GPS-based. Very good app, absolutely worth buying.
dhonzik said:
I am very disappointed with the Samsung Barometer/Altimeter app, The barometer only registers in whole inches of mercury. All watches I had in the past, register in hundredths of inches of mercury. I wonder who else feels the same and would like Samsung to fix this error or maybe a developer could create a replacement app.
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I totally agree! Looks like the sensors that Samsung has choosen are totally pieces of crap.
Altimeter: from my sofa 5m... couple of hours later 35m!!!
Barometer and heart rates are also giving vera random figures compare to 'real' hardware.
Samsung just wanted to show more features and be in line with competition but it does not work.
They better should have left very useful features that were present on previous model likre IR Remote that I had on my Gear 2 Neo!
I will never understand Samsung when they decide to replace features in place of add new features. Mainly when they remove very useful and working gears and replace those with unreliable sensors....
You do realise that the altimeter is air pressure based right?
If the air pressure has changed during the two hours you were on the sofa then the altimeter will show a different reading.
That's the whole point of calibrating it before you set of on a climb or whatever you're up to.
@Lakota
Where is the setting screen, been through settings tried hold the screen nothing.
jb.traveller said:
@Lakota
Where is the setting screen, been through settings tried hold the screen nothing.
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Tap on the widget and scroll right.
Thanks Stormglider sorted.
Lakota said:
You do realise that the altimeter is air pressure based right?
If the air pressure has changed during the two hours you were on the sofa then the altimeter will show a different reading.
That's the whole point of calibrating it before you set of on a climb or whatever you're up to.
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Yes it's barometric. And altitude jumps all over the place even when the pressure is constant. Eg walking up the stairs, 2 stories, results in a climb of -12 to +30 meters, should be - 3 to +4. And my daily run which is totally flat at - 3 shows 116 meter hills. It's true and authentic crap and I'm gonna replace for the Fenix 5 as soon as possible!
blackspp said:
Yes it's barometric. And altitude jumps all over the place even when the pressure is constant. Eg walking up the stairs, 2 stories, results in a climb of -12 to +30 meters, should be - 3 to +4. And my daily run which is totally flat at - 3 shows 116 meter hills. It's true and authentic crap and I'm gonna replace for the Fenix 5 as soon as possible!
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Thats why shealth thinks i climbed 10 flights of stairs while just walking about for nine hours.
To those who think that their Gear S3 sensors are any accurate, just try to disconnect your phone Position/GPS or to use the gear S3 alone. You will then see the truth about those very inaccurate sensors that Samsung has put in the Gear!
They are only 'providing' you with accurate figures when position/gps on your phone is on, in other words, the 'accurate' info you are seeing are provided by internet data, and not by the sensors themselves... Shame on Samsung for that!
i have the same issue. at 155 ft above sea level, but watch states between -150 and +435
it also only counts 1/10th of floors climbed
I don't get accurate floor counts but I know for a fact the gps works well without my phone. At least the golf app I use gives me accurate readings in standalone mode.
Sent from my SM-T530NU using Tapatalk
Same here. I stood outside under a clear sky around 30m above sea level. Tried calibrating thrice but each time it says -7M.
Skydiving
I have used the S3 Frontier when I skydive along with my Viso II Digital Altimeter and they are within 25-50ft of each other. This is without the phone. It is actually pretty accurate. I do not use the built in app. I use one from the store called Skydiver Altimeter. It works great.
Well no clue about others.. but just got mine and comparing with two others one ming Suunto and its like some others pretty darn accurate. Just going up a few feet.. was spot on. I wonder if like the phone you need to reset it at now and again.
Samsung cellphone bursts into flames in Israeli man’s pocket
A 20-year-old man was lightly injured when a Samsung cellphone in his pocket suddenly burst into flames.
The man told his doctors he felt a sudden surge of heat from his pocket and heard small explosive pops, when his pants were set on fire.
With the help of a friend, he managed to pull out the cellphone and pull off his pants, leaving second-degree burns in a small area on his leg where the pocket had rested.
He is being treated at the Galilee Medical Center in Nahariya.
Shofar1 said:
Samsung cellphone bursts into flames in Israeli man’s pocket
A 20-year-old man was lightly injured when a Samsung cellphone in his pocket suddenly burst into flames.
The man told his doctors he felt a sudden surge of heat from his pocket and heard small explosive pops, when his pants were set on fire.
With the help of a friend, he managed to pull out the cellphone and pull off his pants, leaving second-degree burns in a small area on his leg where the pocket had rested.
He is being treated at the Galilee Medical Center in Nahariya.
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I wondered why you did not post a source.... https://www.timesofisrael.com/liveb...one-bursts-into-flame-in-israeli-mans-pocket/
Not exactly reputable, and in addition, it doesnt have any evidence nor does it clarify WHICH Samsung phone.
Sean09 said:
I wondered why you did not post a source.... https://www.timesofisrael.com/liveb...one-bursts-into-flame-in-israeli-mans-pocket/
Not exactly reputable, and in addition, it doesnt have any evidence nor does it clarify WHICH Samsung phone.
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Times of Israel newsite is reputable and I agree it doesn't say which phone. Samsung is very popular in Israel.
After 6 hours it is still on the website.
Let's see if there is a follow up here or somewhere else.
The battery can't explode
Even if you try to force the explosion by destroying the battery, it wouldn't explode
BigBen60 said:
The battery can't explode
Even if you try to force the explosion by destroying the battery, it wouldn't explode
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Explode or burn don't you remember Note 7?
BigBen60 said:
The battery can't explode
Even if you try to force the explosion by destroying the battery, it wouldn't explode
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Technically, it can. Not the cells itself, but the pressure escaping from the cells into the phone inside will result in an explosion.
They've not mentioned the model because its probably an old model device, if this was a current model samsung that this happened with then they would have stated it. they're just jumping on the whole Samsung note 7 debacle, unless they point out the model, this article doesn't inform the risks at all.
Another website playing on the Note 7 fiasco to click-bait. That's lame.
I'm really hoping someone can help me as it's been doing my head in for days now. A game I used to play a few years ago, cannot for the life of me remember the name, where you propel yourself through the playing area and absorb the other objects. I know there are a few games out there like this, but just cannot find the one I played.
The look of it was somewhat similar to auralux which is the screenshot I've attached, with all different coloured spheres (I can't remember what they were...stars, cells, bubbles) and you expelled part of your sphere to move yourself around and absorb other smaller spheres, avoiding the larger ones that would absorb you.
Really hoping someone can help me before this pathetic annoyance drives me completely bonkers