www . youtube . com/watch?v=0Jt1WKymqkM
(not allowed to post links yet)
Hello
I'm using the m5 pro for drawing, but run into an issue with
the pressure sensitivity. The pen doesn't seem to register pressure
below a certain threshold. Then as pressure is increased, suddenly it does. When
drawing, this results in a dotted line, as opposed to a line with continuously
varying opaqueness. See movie above for an example.
Hoping someone can try and replicate this, so I can find out if this is
a design flaw, or a fault in my tablet or pen. Brush settings are quoted in
the movie's description..
Dzjoss
in case anyone is interested: meantime I was able to test the same app on an ipad, and it basically shows the same behaviour, though the ipad is a bit more sensitive. There I also see a broken line. So I think its not an issue with the device itself, just a limitation of the software and technology. You cant seem to beat the sensitivity of a siple pencil (lead)...
I find it heavy but sensitive. Any contact with the screen will draw. Android registers even the distance of the pen from the screen and its angles in the MotionEvent traces so I'd say you just need to tweak your app to make it oversensitive.
emiliewgnr said:
I find it heavy but sensitive. Any contact with the screen will draw. Android registers even the distance of the pen from the screen and its angles in the MotionEvent traces so I'd say you just need to tweak your app to make it oversensitive.
Click to expand...
Click to collapse
Yes I also think its due to the app. Unfortunately in infinit painter I cant find a way to change the pressure curves or something. I'm gonna try some other ones..
Related
Hi
There's allot of improvements, shells, skins..... that are finger-friendly...
I Really like it finger-friendly, it is more comfortable and usually looks good.
I've noticed that the TOUCH PAD of the IPhone is very sensitive for finger touch, while the Hermes needs a very hard touch (Relatively).
Is there a (hard) sensitive touchpad (Digitizer) for heremes ? (something more finger-touch friendly...)
I was looking in ebay, and noticed that there are 2 kinds of Digitizers, does someone knows the difference ?
Digitizer G1
Digitizer G2
Tnx.
I'm afraid neither of those will do what you might think they'd do. The term digitizer refers to a module that consists of a matrix to sense particular change of state in one (or more) given point(s) and translate that as coordinates data in digital form.
There are maybe 2 revisions of them in the ebay links you attached but I don't think they work differently, perhaps one has better sensitivity or responsiveness.
Digitizers activated by pressure works differently than ones activated by mere touch (capacitance). The first is noticable by the requirement of stylus or something to "press" a point to "short circuit" a tiny area in 2 thin layers that are stacked together, they know where the "short circuit" is and report that as the touch point. The latter is activated by the fact that the touch actually alters the "electrical charge" of that particular area.
Common portable devices nowadays still use the press-type, usually it is completely separated from and installed on top of the LCD (if you look closely to your screen when it's turned off you'll notice tiny dots which is the matrix), that's why sometimes they slide around and you have to recalibrate your touch screen. I hope this makes sense.
KaiserVideoDriver has it correct. That's why the iPhone has such a sensative touch screen. Also, I believe that the resistance based touch screens that our phones use are not capable of registering mulitple touch pionts, which is why Apple had to go the opposite route...in order to facilitate the multi touch interface.
From time to time I try and use my Hermes without the stylus, but I constantly find myself either tiring of the constant finger prints and smudges, or I get aggrevated over the touch screen seeming to have a fit from time to time and register touches wrong. It seems to be calibrated for the stylus (i.e. a small, firm touch point); the larger, spread out touch point of a meaty fingertip seems to drive the screen crazy and cause it to register the touch to either of the upper corners. Infuriating when it closes a program or tries to cancel an SMS on you.
Ok, some people were confused as to what my problem was with my other post, They thought it was a performance lag issue; possibly due to low memory. So I am reposting, I am also making it a poll, as some mentioned that a downgrade fixed this behavior on there units.
I have noticed my touch screen does not have smooth response in apps. To confirm I downloaded a app that tests mulitouch; I used "multitouch vis test".
When moving my finger quickly, or swiping, the finger tracking of the touchscreen seems fine. The problem arises when moving slowly or making small movements of less than 10 pixels; that is when you can see that the touchscreen does not track smoothly. You can see the output on the screen stay in one position as you slowly move your finger, then suddenly jump several pixels. It repeats this process as you continue to move slowly, often times the output on the screen is still lagging behind your finger. (it is not centered under your finger even after the jump) This happens even on a fresh boot, and I have tried the touchscreen calibration several times.
Overall it seems like the touch detection is low resolution, and can not detect fine/small movements. If the ones claiming it is dependent on firmware version are correct, then this could be fixed by Archos. If I get enough responses to the poll, I will contact Archos if the results point in that direction. If this is a fairly rare issue, then I know my A70 is defective.
Edit: From the responses here, it seems that the display can detect point touch to a very fine degree. The problem is that the movement detection algorithm is low resolution; the device has to detect movement of several pixels before outputting that movement. That means it can be fixed within software. (unless it is built into the touch screen controller chip)
I run calbrate touch screen and it`s now Ok.
Did you try this?
ncuxxx said:
I run calbrate touch screen and it`s now Ok.
Did you try this?
Click to expand...
Click to collapse
Yes, several times.
Those claiming not to have this issue are ahead, but the sample size is too low.
Can you edit the polls for A101's and A70's separate?
marclh1992 said:
Can you edit the polls for A101's and A70's separate?
Click to expand...
Click to collapse
Polls can not be edited, but this is for A70 only. You having issues with the 101?
Hi all,
I don't know if this is of any relevance to the problems you guys are experiencing, but I thought the screen of my 101 was broken.
The problem was, me coming from a different china tablet with resistive screen, that I was applying far too much pressure to the screen and capacitive screens don't respond well to that.
These screens need almost feather light touch and are very, very responsive and the tracking (at least on my 101) is excellent.
I hope this helps...
I'm not sure you can accurately conclude that the touch response is low resolution for slow finger motion with the test scenario you are using. I say this not based on some intimate knowledge of Android touchscreen drivers, but on years of experience programming human interfaces at a low level for embedded systems. From using my Archos 101 and a Zenithink ZT-180 (Android 2.1 tablet), the touch response feels similar to how some mice (mouses?) interfaces might be programmed, but tweaked to compensate for the vagaries of using a fat index finger that lays over many pixels at once pretending to be a pressure sensitive mouse cursor. I can imagine the touch interface having to pay attention to how many pixels are being touched by your finger and how many of those pixels at the edges are noisily changing from inactive to active touch-wise. It's actually very impressive how intuitive it feels to use a good touch interface when I know how much logic is required to say this is a touch and hold verses a hard quick tap verses a small swipe verses whatever. As in mouse programming, there are logic thresholds based on how fast the cursor is moving and how quickly it's accelerating. It could very well be that your A70 may not have all the speed and acceleration thresholds set optimally, or to your tastes. I am only suggesting you keep an open mind and dig deeper to learn how these things work.
Bye.
Marine6680 said:
Ok, some people were confused as to what my problem was with my other post, They thought it was a performance lag issue; possibly due to low memory. So I am reposting, I am also making it a poll, as some mentioned that a downgrade fixed this behavior on there units.
I have noticed my touch screen does not have smooth response in apps. To confirm I downloaded a app that tests mulitouch; I used "multitouch vis test".
When moving my finger quickly, or swiping, the finger tracking of the touchscreen seems fine. The problem arises when moving slowly or making small movements of less than 10 pixels; that is when you can see that the touchscreen does not track smoothly. You can see the output on the screen stay in one position as you slowly move your finger, then suddenly jump several pixels. It repeats this process as you continue to move slowly, often times the output on the screen is still lagging behind your finger. (it is not centered under your finger even after the jump) This happens even on a fresh boot, and I have tried the touchscreen calibration several times.
Overall it seems like the touch detection is low resolution, and can not detect fine/small movements. If the ones claiming it is dependent on firmware version are correct, then this could be fixed by Archos. If I get enough responses to the poll, I will contact Archos if the results point in that direction. If this is a fairly rare issue, then I know my A70 is defective.
Click to expand...
Click to collapse
I'm not saying the hardware is low quality, and it could be software setup. I know a good deal about how these things work, or at least have the ability to understand the technical side. I am an avionics Tech by trade.
When testing the slow pixel to pixel fine movement adjustment, I do not slide my finger, I roll my finger on the screen. This allows smoother and more precise small movements. It is a technique I have used on other devices that works very well.
The issue, is that my phone and 10in tablet (non Archos) does not behave this way. It is a usability issue. When playing a game like Angry Birds, how precise you can aim is the difference between beating the level and failure.
CrunchyDoodle said:
I'm not sure you can accurately conclude that the touch response is low resolution for slow finger motion with the test scenario you are using. I say this not based on some intimate knowledge of Android touchscreen drivers, but on years of experience programming human interfaces at a low level for embedded systems. From using my Archos 101 and a Zenithink ZT-180 (Android 2.1 tablet), the touch response feels similar to how some mice (mouses?) interfaces might be programmed, but tweaked to compensate for the vagaries of using a fat index finger that lays over many pixels at once pretending to be a pressure sensitive mouse cursor. I can imagine the touch interface having to pay attention to how many pixels are being touched by your finger and how many of those pixels at the edges are noisily changing from inactive to active touch-wise. It's actually very impressive how intuitive it feels to use a good touch interface when I know how much logic is required to say this is a touch and hold verses a hard quick tap verses a small swipe verses whatever. As in mouse programming, there are logic thresholds based on how fast the cursor is moving and how quickly it's accelerating. It could very well be that your A70 may not have all the speed and acceleration thresholds set optimally, or to your tastes. I am only suggesting you keep an open mind and dig deeper to learn how these things work.
Bye.
Click to expand...
Click to collapse
I have noticed this issue too, with "multitouch vis test" When i move my fingers over the screen slowly it jumps at least 4 Pixels.
But the screen has not a low resolution, when i lift my finger up and place it down again, i can "select" for example 412 then 411.
I have the archos 70 it
Schroedinger
Edit:
When i use this program on my Desire HD, ich can slide from Pixel to Pixel by rolling my finger.
schroedinger said:
I have noticed this issue too, with "multitouch vis test" When i move my fingers over the screen slowly it jumps at least 4 Pixels.
But the screen has not a low resolution, when i lift my finger up and place it down again, i can "select" for example 412 then 411.
I have the archos 70 it
Schroedinger
Edit:
When i use this program on my Desire HD, ich can slide from Pixel to Pixel by rolling my finger.
Click to expand...
Click to collapse
Definitely the software movement detection algorithms then.
If we get some more votes on here, I am going to point Archos in this direction.
hardware or software problem...???
I have already contacted Archos support about this. They just told me they've never heard of this problem... I responded back with more detailed info and they have just ignored me.
I have also posted info on this on archosfans.com forum. There doesn't appear to be many people who care, or have this problem. I am trying to find out if there is defective hardware which means I need to get it replaced BEFORE I void the warranty with the developer firmware, or if it is expected because of software optimization that will be fixed.
http: forum.archosfans.com/viewtopic.php?f=73&t=48651
video:
http: www youtube.com/watch?v=zdH_Kg4-xTQ
Can a few people please try using Multitouch Visual Test and post results? I am wondering if any A70IT, or any other Gen 8 touch screen actually works properly. I am wondering if anyone has a an A70IT that actually picks up every pixel like it should...
If you don't have access to get it from the market (it is not in AppsLib), I am posting a link to the apk to download. It is just a development tool, so I am sure it is ok.
http: www megaupload.com/?d=PN7DVJZ2
that poll is completely unscientific
don't care about the poll
I don't really care about the poll. I have this issue and trying to figure out if anyone else has it or if I have a defective device that should be replaced. This was the only thread I could that related to my problem, and the original post explained it perfectly.
Should I start a new thread about this problem rather than a reply to this poll?
Coordinates seems to increment/decrement approx +- 5 only. Slow movements are delayed somehow. Not really a big problem, but if it is a software issue I would really like to see some improvements in the future.
It isn't scientific, but if a lot of people had participated, it would have been a good guide.
It is rather annoying, but no point in replacing it if it is a common issue with every tablet.
Marine6680,
Exactly my point. I don't want to waste my time in trying to replace something that might not be broken (in a matter of speaking).
Am I the only one having really poor touch recognition on my A43? Whether I use a finger or stylus, it often happens--about once in five keystrokes or more--that after releasing the touch on an on-screen keyboard, a different key additionally gets registered, sometimes not even a neighboring key. It is very hard to type in a password.
My touchscreen also has this problem. I'll hit one key and it will add another key somewhere entirely else on the screen. Menus will spaz out when I try and scroll through them.
Oh yeah, remember that problem I was having where strange spots showed up on the screen and I had to get it RMA'd? That came back on my BRAND NEW unit. I'm getting sick of the crappy screen on this otherwise great unit =[ Maybe Archos will just give me a refund and I can spend my funds on an unlocked/off contract phone with similar specs.
Sadly, I think this is a hardware issue. I'm not sure there's anything firmware can do besides ignore half of the inputs. But then, you have a non-responsive issue ...
Have you guys tried to calibrate the screen through SDE?
I have a similar issue with my A101, although it's not as bad as you guys describe - sometimes the screen just won't register my touch at all, mostly in the edges of the screen - sometimes I think it's the calluses on my fingers from playing guitar, sometimes I think it's the horrible screen they gave us....
My $0.02
So does anyone not have this problem with an A43?
wokker666 said:
Have you guys tried to calibrate the screen through SDE?
I have a similar issue with my A101, although it's not as bad as you guys describe - sometimes the screen just won't register my touch at all, mostly in the edges of the screen - sometimes I think it's the calluses on my fingers from playing guitar, sometimes I think it's the horrible screen they gave us....
My $0.02
Click to expand...
Click to collapse
You might be having better luck because the A101 has a capacitive screen with multi-touch capabilities. They're known to be more reliable than the resistive screens the 43IT's have.
arpruss said:
So does anyone not have this problem with an A43?
Click to expand...
Click to collapse
I have a 43IT, which is why I posted Sorry I wasn't clear. I feel your pain. Also, I suggest using your nail or a stylus, as the pinpoint hardness of either are better than the soft, blob your fingertip makes on the screen sensor array.
ddukki said:
I have a 43IT, which is why I posted Sorry I wasn't clear. I feel your pain. Also, I suggest using your nail or a stylus, as the pinpoint hardness of either are better than the soft, blob your fingertip makes on the screen sensor array.
Click to expand...
Click to collapse
I generally use a stylus. The problem is probably due to the way the plastic digitizer flexes which generates ghost movement data on release. A glass digitizer would be much better.
By the way, it is possible to ameliorate the problem slightly in software. I did that in the myKbd app for PalmOS. Basically, you filter out some very rapid motions. It doesn't affect sensitivity in any significant way.
The reason I'd like to know if everyone has this problem is because I'm going to send my A43 in for warranty repairs, and I am wondering if I should include this problem (in addition to the annoying bright 1/4" area on the screen, and the occasional timeouts when writing to internal flash that result in the device hanging).
So I bought the C-Pen but for me it's horrible. The lines aren't nearly as accurate when done with my finger and sometimes it doesn't register at all. Anyone else having this?
fenjen said:
So I bought the C-Pen but for me it's horrible. The lines aren't nearly as accurate when done with my finger and sometimes it doesn't register at all. Anyone else having this?
Click to expand...
Click to collapse
Returned mine the same day I received it. A cheap pen from ebay, worked much better and without missed clicks. Wasn't expecting this really. In addition, the c-pen didn't work on the capasitive buttons. The cheap one did.
TSport- said:
Returned mine the same day I received it. A cheap pen from ebay, worked much better and without missed clicks. Wasn't expecting this really. In addition, the c-pen didn't work on the capasitive buttons. The cheap one did.
Click to expand...
Click to collapse
Was it like really inaccurate for you too? If I drew a pretty straight the line, it would almost always come out all wobbly. Then when I drew with my finger the line would be all smooth. And on some points on the screen I couldn't even draw at all sometimes.
I am without a doubt going to send it back. Really ****ty product
Sent from my GT-I9300 using xda premium
The problem is that capacitive screens only have spots they react on, not every single location. So the pen has to have a large enough tip to cover at least one such spot under all conditions; something which is always given when using your finger.
(In fact your finger usually covers multiple spots)
These spots don't really allow for smooth transition in e.g. diagonals.
The cheap pens off eBay have a larger tip which covers multiple spots (like your finger) and work thus better.
On older screens or elder tablets (e.g. the Wetab) they are still unusable and will result in the same issues you're having with the c-Pen since those screens have even larger gaps between the spots.
d4fseeker said:
The problem is that capacitive screens only have spots they react on, not every single location. So the pen has to have a large enough tip to cover at least one such spot under all conditions; something which is always given when using your finger.
(In fact your finger usually covers multiple spots)
These spots don't really allow for smooth transition in e.g. diagonals.
The cheap pens off eBay have a larger tip which covers multiple spots (like your finger) and work thus better.
On older screens or elder tablets (e.g. the Wetab) they are still unusable and will result in the same issues you're having with the c-Pen since those screens have even larger gaps between the spots.
Click to expand...
Click to collapse
Yeah, that makes sense. Actually I could draw a straight line with it just fine but at the upper part of the screen it became unresponsive and really annoying to use.
Can't comprehend how such a product could be advertised as "exclusively optimised for S3".
Oh no.. I placed order few days ago!
I've been researching this C-Pen to decide if I wanted one. What I read on Amazon.com is that it seems to work ONLY on an S lll. Does not work on other tablets or phones. Now, I wanted to be able to use a pen on a tablet I have so I figured this was a negative for this particular pen.
If it doesn't even work well on the S lll what is the problem? (rhetorical question). My main interest in using a pen was not as a substitute for my finger but to actually use the S Memo for sketches.
it seems to me this technology is not yet sophisticated enough for prime time.
Quote:
The problem is that capacitive screens only have spots they react on, not every single location. So the pen has to have a large enough tip to cover at least one such spot under all conditions; something which is always given when using your finger.
(In fact your finger usually covers multiple spots)
These spots don't really allow for smooth transition in e.g. diagonals.
The cheap pens off eBay have a larger tip which covers multiple spots (like your finger) and work thus better.
On older screens or elder tablets (e.g. the Wetab) they are still unusable and will result in the same issues you're having with the c-Pen since those screens have even larger gaps between the spots.
Really?
Then how does cheap pen from ebay which has almost same surface are on the tip works smooth.
IF YOU LIKE MY WORK, THANK ME BY THE BUTTON BELOW
A Bluetooth powered Admonition Jot touch is being released in a few hours. Anybody plan on getting it?
Link: http://adonit.net/product/jot-touch/
Sent from my Transformer Prime TF201 using xda app-developers app
Does that just mean it has some buttons on it?
(I can't draw anyway, so I don't know why I would use one)
sjrixon said:
Does that just mean it has some buttons on it?
(I can't draw anyway, so I don't know why I would use one)
Click to expand...
Click to collapse
No it will connect to the Prime via Bluetooth, thus allowing for pressure sensitivity and greater precision. The buttons are for the app devs to implement so that you can change from things like pen to eraser to marker without going in manually.
Jonphinguyen7 said:
No it will connect to the Prime via Bluetooth, thus allowing for pressure sensitivity and greater precision. The buttons are for the app devs to implement so that you can change from things like pen to eraser to marker without going in manually.
Click to expand...
Click to collapse
if its actually shown to improve accuracy on the prime's digitizer id spring for one, but not until i can see some actual screen tests
I liked the video.. People using their iPad to draw etc. It's a nice concept.. Not sure how much other use I would have for one.. I bought a prime with a keyboard because my handwriting is so bad!
Really want to know if it would work well on TF201. I am looking for something i actually can write some notes on the pad. It is what the pad is missing now for me
I don't see the point unless ASUS fix the wavy diagonal line issues. What good is a pressure sensitive pen if I can't even draw a straight line with it or any stylus?
ranwanimator said:
I don't see the point unless ASUS fix the wavy diagonal line issues. What good is a pressure sensitive pen if I can't even draw a straight line with it or any stylus?
Click to expand...
Click to collapse
This is using antipaper and my finger.. Running on AndroWook 2.1 on my tf201
The Jot Touch won't improve the accuracy of the TF Prime's digitizer. It uses the standard Jot Classic tips therefore it will be just about as accurate as the Jot Classic stylus. It does introduce a pressure sensitive switch and bluetooth in order to relay pressure information to applications that can read it but these won't have any impact on overall accuracy of the drawn lines.
TL;DR: The Jot Touch won't be more accurate than any other capacitive stylus on the Prime, but it will have pressure sensitivity for those apps that can make use of it.