4,202 reputation
42863
bio website ubasics.com
location Ann Arbor, MI
age 38
visits member for 3 years, 11 months
seen Jul 16 at 14:27

Embedded engineer, hardware and software on custom and mobile hardware.

adavis@ubasics.com - 734-418-8418 - Twitter - Google+


Mar
22
suggested suggested edit on Will it damage my iPad if I use an iPhone charger to charge it?
Mar
22
answered Measure the frames per second on a mac
Mar
22
comment Harmonic noise introduced when using an iPhone dock extension cable connected to a mic peripheral
Good call, I hadn't thought of the USB frame sync.
Mar
22
comment Is it safe to use my US iPhone/iPad charger with a simple European plug adapter?
You'll find that most new apple equipment, chargers, and power bricks are all labeled for 110-240V, 50-60Hz AC power.
Mar
22
answered Is it safe to use my US iPhone/iPad charger with a simple European plug adapter?
Mar
20
answered How to debug iPhone overheating when the cause is clearly not the environment when the phone is used?
Mar
20
comment My iPad won't respond to anything.
This may explain a part of "what can be wrong" but doesn't answer "what can fix it". Perhaps add a little more to your answer to make it more complete?
Mar
20
comment What happens, exactly, when an iPhone app is run on an iPad at 2x scale?
No, and given that apple could easily handle most things correctly (particularly text and UI elements!) it appears they've made a deliberate choice to use pixel doubling to encourage application developers to update their apps specifically for the iPad. This question, however, could serve as a good start on such a list.
Mar
20
comment What exactly is a retina display?
@gentmatt It's all marketing anyway. There are some metrics for how closely packed the cones are in the fovia centralis (they are optimally hexagonally packed) but everyone's eyes are slightly different in terms of size, lens, etc, so there's no universally accepted visual acuity for the human eye - just a rather large range. Personally I'm just glad that someone is pushing for this. We've already exceeded our ears ability to hear (44.1kHz at 16 bits is pretty much it, although exceptional listeners need 96kHz at 24 bits), so doing this for displays is something I've wanted for a long time.
Mar
20
comment How do I set an icon for a directory via the CLI?
Yes, setfile is the correct way to do this.
Mar
20
comment What exactly is a retina display?
@gentmatt I'm referring to Apple's earlier assertion: "While talking about the new display, Steve Jobs went on to detail that after a certain point the human eye fails to distinguish individual pixels. According to the Apple CEO this "magic number," when visible pixelation is no more, is around 300ppi." which was originally at 12 inches. Do the math (300dpi over 12 inches involving an arctan) and you get about 57 arcseconds, or 0.16 degrees. Recent comments suggest they are going bigger, and I suspect they are getting ready for a bigger iPhone 5 display, which may require 0.19 degrees...
Mar
20
revised What exactly is a retina display?
added 655 characters in body
Mar
20
answered What exactly is a retina display?
Mar
20
answered iPad from AT&T or Verizon for Bell Network in Canada
Mar
20
comment Primary display randomly changes
I had to beat my head against OSX for several months writing a video driver. OSX is smart in most ways, and dumb in some others. The major problem being that when it's dumb there's often no easy workaround.
Mar
20
answered Primary display randomly changes
Mar
20
awarded  Yearling
Mar
20
answered Harmonic noise introduced when using an iPhone dock extension cable connected to a mic peripheral
Mar
20
answered Is the boot time of an iOS device affected by the apps that are running at shutdown?
Mar
20
revised What's the startup/reboot time for iPad (3rd generation) compared to other iOS devices?
edited body