I'm really excited about this build and its been a lot of fun so far. Fun and Hard.
Seeing as how I'm new to Making, I'm starting slow and doing a "Sandwich Build" first. The original inspiration came from TabletMod.com
Here is the equipment:
A re-purposed cd-rom enclosure and brass stand-offs (to mount the controller)
As for the build log, there is not much to say. I had to strip the aluminium off the back of the display, and am using electrical tape to hold the display together.
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On the first test, I got the usual jitters and false clicks, nothing too serious. One problem I did have earlier was the read height of the pen was greatly diminished.
The TCon board is at the bottom of the screen (pictured below), I covered it in plastic and wrapped in in copper tape to help with both of those. (It did
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You will notice that there is copper around the screw mounting holes on the Tcon board. (so these are grounding points?)
Here is the controller:
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Initially I'm getting very good results. Except for the false clicks! They are everywhere and random.
As you can see, I've only done some shielding but no grounding.
So I have some questions:
1. A lot of you here are using DVI, is this preferable to HDMI?
I will be ordering ferrite cores as soon as I know what cable I'm going to settle on
2. In order to ground the tablet and screen, I have to have them on the same ground.
I'm quoting DaBotz here:
False clicks usually can be ameliorated through grounding together tablet and screen, and using ferrites to choke common mode currents, so they should not be too worrysome.
I have no idea what common mode currents are, but am I going to have to take my tablet apart to do this or is there a way around that?
Also of note, You will notice that there is no copper rings around the screw holes on the controller, so there are no grounding points on the controller. (Am I right about this?)
Really, False clicks are the only real problem, Jitter is almost non-existent, but I do have a confession: I unknowingly messed with the calibration in the pen before reading that I should make note of where it was initially
So there it is, I look forward to everyone's input!