Tuesday, October 8, 2013

P3 KILL A WATT Load Meter and Monitor


I've been using a Kill-A-Watt meter these past few weeks. This is one gadget everyone needs to get.
You basically plug it in between the outlet (or strip) and to the device you want to measure. It measures the load and gives you good metering options. For example, you can plug it in and run it a few hours to days to see the average kWH consumption of a particular device. Multiply that by your energy rates and you can pretty much sum up how much a device would cost you to run monthly. With tons of gadgets and electronics, the electricity bill can get pretty high so this device helps you reign in on those costs.

You can get one at Amazon (here) or NewEgg (here). The hundreds of 4.5-5 stars from users is enough to tell you this is a decently good product.

I was pleasantly surprise to find out which gadgets were consuming too much or too little power. For example, leaving my various AirPlay speakers had little to negligible power consumption at 2-4 watts on standby. Leaving a few RAID and external drive enclosures plugged into the power strip while being unused by a powered down computer yield 25-30 watt of power.



I definitely changed some of my usage habits after using a few of these Kill-A-Watt meters around the house. For example, I had an older AMD Athlon machine running as a ESXi server running a DVR for my cameras. It was also serving iTunes and Plex Media server. At idle, it was still running at 85 watts and easily ramp up to 110-130 watts on load. This was a bit costly to run trivial things 24x7. Hence, I switched to running to an older unused core i5 laptop and my average use is now 20 watts for those same services.

I highly recommend a device like this. Just read the hundreds of customer reviews. Sure, there will be a few lemons here and there but the general consensus is that these pretty much pay for themselves.



Monday, October 7, 2013

Two Wi-Fi Extenders. Edimax and ON Network impressions

Today's topic is Wi-Fi extenders.



I've spent the last few weeks trying to optimize my network in my new house. I have a few rooms wired but most of the house still requires Wi-Fi. Moreover, a few devices exclusively require Wi-Fi. With more than 8 IP cameras, a half dozen airplay speakers, and various mobile devices, the wireless network in my house is heavily congested. Hence, I looked into Wi-Fi extenders.

I ended up getting two wifi extenders to see if I could improve my network situation: An Edimax EW-7238RPD Universal Dual Band Wi-Fi Range Extender and







The Edimax is a dual band extender which works with both 2.4 and 5 GHZ bands whereas the ON Network N300 is strictly a 2.4 GHz extender. The N300 seems to be a rebadged Netgear WN3000RP.

Both are wall plug extenders. The ON Network N300 have two antennas and the performance shows. It has almost double the range of the Edimax. However, the Edimax has a nice feature: WPS push button configuration. WPS makes it easy to have it pair to your main router. For me, the WPS isn't a big selling feature. Both extenders have ethernet ports so you can connect lan line devices like an XBOX or NAS.

My main Wi-Fi Router is a TP-Link Archer C7 (AC1750) dual band 802.11AC Gigabit router. Overall, it is a very good router with excellent range and throughput.

As you can see (using various tools), the Archer C7 support 1300 Mbps (80MHz width) in 5GHz and 450 MBps (40MHz width) at 2.4 Ghz.



Neither of these extenders perform better than the TP-Link Archer C7.

The ON Network N300 tops out at 300 Mbps. The Edimax, to my surprise, only tops out at 150 Mbps yet it is rated at 300 Mbps. The Edimax's advertising is a bit deceiving and it is my fault for not reading the fine print. Edimax advertise the EW-7238RPD at 300 Mbps (when you account for both bands).

Taken from their product page. I feel a bit deceived that I am not getting 300 Mbps on a single band. I understand that I won't get the speed (450 Mbps) from my Archer C7 but 150 Mbps is cutting it low for a 802.11n device.



The actual speed of the Edimax is 150 Mbps. Hence, my dissapointment.



Performance.

So how do they perform? This is a bit hard to quantify and test. I have a three story house and my main router is in the middle floor. The basement houses the ON Network N300 and the top floor is handled by the Edimax. I tried various testing and various floors and at different ranges; behind walls and in adjoining rooms. The ON Network actually perform the best as I could easily get 60% signal from the farthest reach of my house.

Testing about 40 feet away, the N300 was giving a healthy 145 Mbps.





In the real world, using iperf, I was indeed seeing 7.5 Mbits/sec. This was good enough for one computer to stream 1080p content from youtube or Netflix.


Netflix requires 5-7 Mbps for 1080p streaming. Edimax struggled quite a bit.


I only tested the 5GHz channel of the Edimax as that is the justification for buying it. On 2.4 GHz, I was better off just using my router which has excellent range. The Edimax gave me an average throughput averaging 54. Mbps even at 5GHz at an average distance.




iperf showed a disappointing rate and I could see frames dropping while watching video.



It was only when I was right next to the Edimax that I got decent throughput of 150 Mbps.




Both extenders use standard web browser interfaces. There is really nothing to write home about. They both do the job. Both have easy WPS set-up.




Conclusion.

I would have to say the N300 is a better deal. Even though it doesn't support 5GHz, it was a better extender with far better range. Unfortunately, I could really do with out both of them. My TP-Link Archer C7 has a very good range. Instead of using wifi repeaters, I think I'll be better off hard wiring to ethernet to another Wi-Fi router running bridge mode. With extenders, you are effectively only getting half the throughput. It has to connect to the router wireless and it will compete with the other devices that are concurrently using the same spectrum as the source wi-fi.





Monday, September 30, 2013

Ford C-Max Energi Plug-in Hybrid. An observation from a geeky gearhead.



I'm into fast cars. I'm into European luxury and sporty cars. I love cars in general. You can call me a gearhead. My wife is into practicality. She recently got one of those brand new Ford plug-in hybrids, the C-Max Energi. This is completely out of left field for me. The picture you see above is the average MPG of driving roughly 40 miles over a period of two days. Even as a gearhead, I can totally appreciate that 80 MPG number I am seeing above.


This is not my kind of car I typically look into. Politically correct and green trendy. The visual exterior won't turn heads. The handling and drive characteristics is nothing to rave about.  I'm currently in the market for a mid-life crisis sports car so this is the polar opposite of what I look into.  However, the C-Max Energi is already growing on me. I'm starting to really like it. It is also packed with a lot of gadgetry and electronics. This blog is not going to be a full on review of any sorts. I'm just going to give my readers my impression of a car that I will driving 20-30% of the time.

Just look at how cool the plugin port is. The blue surrounds shows you how far along your charging is. The outer edge of the port lights up fully to indicate the charge status.




Friday, September 27, 2013

Firefox ZTE Open Firefox OS phone unboxing

Look at what I got! ZTE Open. The first Firefox OS phone.

I just got it so here are some pictures for now. I'll dig deep into it later.





It uses a standard SIM and has a micro-sd slot.



FireFox OS app launcher!


Friday, September 20, 2013

Chromecatch turns your Mac into a Chromecast receiver

There are lots of software/solutions that turns computers, NAS, and other devices into Airplay compatible end receivers. Now, there is one like that for Chrome "casting." It is called Chromecatch. It is a 3ドル app on the MacStore and there is an iOS version that turns your iPad into a chromecaster.

What does all this mean? The same functionality of the 35ドル HDMI Google Chromecast dongle can be replicated on a computer. 3ドル sure beats 35ドル if you want to experiment with this functionality.

The Cast icon shows up on Chrome devices if you are on the same network. I tried it with both computer, iOS, and Android devices. Unfortunately, Google half baked Chrome casting so it isn't available on the Samsung Chromebook.



Here is my Samsung 7" Galaxy Tab casting youtube to a Macbook Pro Retina. The Galaxy tablet is handing off the youtube to the Macbook.




It supports Google Play Music, Youtube and the SDK samples of Google Cast. I didn't try Netflix. I can't tell you how useful this except to say it can be done. Maybe I'll install it in my bedroom 27" iMac which is currently being unused. I still prefer Airplay any day of the week.


You can download and purchase it here. http://www.chromecatch.com/

Update: Apparently, you can do this for free with Leapcast. Maybe I'll install it on one of my Linux box with a follow-up.


Monday, September 16, 2013

64 bit iPhone and the future of the iOS

The iPhone 5S has brought about a lot of disinformation on the internet. Everyone seems to have an opinion and I'll throw in my two cents.


See the picture above? That is a 1990s era Silicon Graphics Octane Irix Workstation that I used to work with in the 1990s. It has a total RAM configuration of 2 GB. Yep, 2 Gigs of RAM. All the MIPs based RISC workstations I worked on were all less than 4GB of RAM and ran 64 bit. DEC, SGI, Sun Solaris. What does it prove?

You don't need more than 4GB of RAM to realize the benefits of 64 bit computing. I don't profess to be an expert on 32/64 bit but I do know that there are many more advantages to 64 bit besides addressing more than 4GB of RAM. Addressing more than 4GB of RAM does not require 64 bit hardware/OS as we've seen with PAE extensions.

Now that we have that of the way, what are my thoughts?

Well, I do agree that the move to 64 bit will have very little material impact on consumers today. There will be some specific use cases but I think this is more about laying the ground work for the future.

A few scenarios. AppleTV and future iPads will benefit. I see Apple will venture into gaming in a big way. The original XBOX, Playstation all had 256-512MB of RAM. The newest forthcoming XBOX, PS4 now support 8GB of RAM. The AppleTV, in my opinion, may be a next platform gaming platform. IOS7 now has built in APIs for game controllers. iOS7 now supports OpenGL 3.0.

Next scenario is a hybridization of iOS and OSX. We may well see a Macbook AIR with ARM in 3-4 years. It is inevitable when all the pieces of the puzzle are in place.

In the near immediate future, the move to 64 bit iOS will allow OSX developers to easily port their great apps to iOS with the new improve Toolchain in XCode. I am thinking of ultra cool apps like Hype HTML5 animation and Pixelmator will be easier to port to iOS. To me, this is the biggest draw.

So what about everybody else? 64 bit in the mobile space is an will spread across all the platforms but for now, Apple does have the marketing and the rights to claim the first 64 bit smartphone. As for those who claim the Motorola Razor I with the ATOM z2480, they're completely wrong. The Z2480 SoC is a 32-bit SOC.

Android may go 64 bit. The GCC compiler was recently updated this May of 2013 to support 64 bit ARM so I don't expect we will see a 64bit OS on Android until version 5.

I doubt I will be getting a 5s. I carry two phones (Android and iPhone) and tick-tock updates every year. This year, I will probably get a Note 3 (from work) to compliment my iPhone 5. I will definitely be getting the next A7x powered iPad. The next year, I'll get the iPhone 6.



Thursday, September 5, 2013

Living with Chrome OS

I've been trying to wrap my head around the idea of going cloud-only. Supposedly, it is the future of computing and there are many strong advocates of Chrome OS. I've been playing with my two Chromebooks and my opinion is still the same. It will be a long time before the majority of us go cloud-only.



Here are some anecdotes  of my life with Chrome OS and Chromebooks.
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