Showing posts from 2016

Mega 108 Watt 10 port USB charger with Quick Charge QC2.0

It finally happened, my travel kit grew to a point where more than 5 USB charging ports are required at one time. Chargers with more ports are available but I don't need yet another charger.  Instead I combined 2 good ones I already have. You could use them separately but one of my goals is optimizing design.

I started with two of these 54W Aukey 5-port USB chargers (PA-T1):
Ports 1-4AiPower5V2.4A each (max 7.2A)Port 5Qualcomm Quickcharge 2.0 (older but still great)5V2A / 9V2A / 12V1.5A
Then extracted some powerful neodymium magnets which were originally rubber feet from a Foxconn mini PC.

Cyanoacrylate provides a good bond between the metalic magnets and plastic so these can just be glued on after removing the rubber and surface prep with isopropyl alcohol.
The magnets turned out to be asymmetric so the larger side had to go down to increase the surface area for bonding.  This means that the poles are now repelling. Fortunately repelling magnets attract well side-to-side so I jus…

My (failed) attempts to return my Samsung Note7

I'm writing this because despite all press urging users to return their Note7 devices ASAP, it's still impossible to return a device purchased in Singapore and likely many other countries as well.  While this is far from proof of anything, I'm publishing my record of events, specifically return attempts and Samsung's responses.

As of today October 14, 2016 (JST), Samsung SG's official statement continues to be: Samsung is in close discussions with telecommunication operator and retail partners, and details on how Galaxy Note7 customers can go about the exchange or refund will be provided soon. Timeline of events for my record are as follows. Some dates from adjusted for Asia timezone. August 19, 2016 - Preordered Note7s available for pickupAugust 25, 2016 - Initial reports of fire issues surfaceSeptember 3, 2016 - Voluntary recall starts. CPSC investigation beginsSeptember 16, 2016 - Samsung claims issue has been found and fixed.September 20, 2016 - Samsung a…

2016 Retina MacBook Pro Upgrade Wishlist

It's been a while since Apple had a major refresh of the MacBook Pro 15" Retina.  The last refresh in May 2015 included faster processor and SSD, new GPU and trackpad but nothing amazing.

Here's my wishlist for Apple's next refresh.

Upgrade the current Crystal Well (Haswell) CPU to Skylake for improved performance and battery lifeOption for up to 32GB RAMOption for up to 1TB SSDReplace magsafe, Thunderbolt, and USB on the left edge all with USB 3.1 C / Thunderbolt 3Keep the right edge as-is for using older USB A devices such as a mouse without an adapterUpgrade iSight camera to a wide-angle 4k one. Why? To support digital pan/scan @1080 and other software potential.