Welcome, Guest. Please Login.
YaBB - Yet another Bulletin Board
May 10th, 2025, 1:44pm
News: Welcome to the Cabin! If you want to register send me an e-mail. you can link to my e-mail under the welcome page.


Pages: 1
Raspberry Pi Zero - A review (Read 137 times)
Fernando
YaBB Administrator
*****
NY City




Posts: 2380
Gender: male
Raspberry Pi Zero - A review
Apr 27th, 2016, 8:12pm
 
Finally got it the cables to get it working. As stated before in other thread about the the Raspberry Pi Zero (aka R-Pi:0), It is basically a Model A/A+ without the LCD and Camera Ports. Which is funny - as in, the Raspberry Pi Foundation just released a 8MegaPixel camera for the Raspberry Pi for it's camera port for less than $25. Cameras that usually sold for this port usually go for double that. And none of them will work for the R-Pi:0.
 
Getting it together, I noticed that the Micro-SD Card Holder is not spring loaded like in the Model A+/B+, R-Pi2 and R-Pi3. Whether it is my SD Card holder is broken or it was never spring loaded, remains to be seen. I'll be ordering another one by next week. At least the Micro-SD Card went in and was snug inside the holder.
 
Getting the appropriate adapters and cables was another $6, raising the cost of the R-Pi:0 to $11. Consider that the Model A+ is $25 which is twice the size with 1/2 the RAM and a slower CPU.
 
The Jessie Raspbian I use on the R-Pi2 worked well on the R-Pi:0. It booted up fast, under 30 seconds, and I was able to run Libre Office on it and did a few things on it. Since the CPU is a single core unit like on the Model A/A+/B/B+ but a lot faster, I noticed the CPU Meter throttling up to 45% when running Libre Office. On the older R-Pi's, they throttle up even higher with 60% on the Model B/B+ and over 80% on the A/A+. Remember - the R-Pi:0 has the same amount of RAM as the Model B/B+ at 512MB but double the RAM of the Model A/A+ 256MB. So the Model A/A+ has to do the same amount of work with 1/2 the RAM and a slower CPU of the R-Pi:0.  
 
I did not test the Internet as I do not have a USB Multi-Port Hub and no Wireless at home. Technically you can get all the Model A/A+ and the R-Pi:0 on a wireless network with a USB Wireless adapter and a USB Multi Port Hub. Besides no Ethernet port like on the other Model A/A+, only having 1 USB port on the R-Pi:0 is a major downfall for it.
 
I do know with the model B/B+, though you can access the internet and flash, some flash heavy sites will bog it down to a crawl, but they will work fine on the R-Pi2. Of course you already know, the R-Pi2 has 1GB of RAM and a 4 core CPU (compared to 512MB with a single core CPU). The R-Pi:0 will probably do better accessing the internet with flash because of its faster CPU. The only thing holding it back is its RAM Size. Flash is a RAM Hungry App...
 
But for $5... (or around $12 with all the cable adapters you are going to need for it...), you can not beat the price and power of the R-Pi:0. There are some systems out there that are touting that they can beat that but their boards range at a minimal $9 and like the R-Pi:0 you still need a few adapters to use them, which raises up their prices!
 
I heard you can boot Wheezy off the R-Pi:0 like I did on the R-Pi2 but some of the configurations will mess up the R-Pi like the Overclocking Option. This is untested, but it will be interesting to say the least. I would have to go through config file of Wheezy and comment out the overclock feature on it before I can try to boot it on the R-Pi:0. If it works, "Horray for backwards compatibility!"
Back to top
 
 
View Profile   IP Logged
Hondo I. Sackett
YaBB Administrator
*****
Behind you!




Posts: 1349
Gender: male
Re: Raspberry Pi Zero - A review
Reply #1 - Apr 27th, 2016, 10:43pm
 
Cool! Sounds good. Can you add USB on the I/O pins? It would make a decent mini laptop CPU then. If you could add USB and touch screen to the I/O it would makenangood tablet too.
Back to top
 
 

Well the cowboy, like the red man, you had to leave your land
You can't raise your stock and plant your crop in the gumbo and the sand
Greed disguised as progress has put us to the test
They won't be glad until we're gone from our home out in the west
It's sad to see those good old days replaced with greed and doubt
Soon we'll leave the country, the campfire has gone out
Bid 'em all adieu, you can't turn the world about
The cowboy left the country, the campfire has gone out
View Profile WWW   IP Logged
Fernando
YaBB Administrator
*****
NY City




Posts: 2380
Gender: male
Re: Raspberry Pi Zero - A review
Reply #2 - Apr 28th, 2016, 1:09am
 

 
No USB on the GPIO, just like on the others. But I know that three of the pins can be set as a Serial TTY Port, just like on the others. I forget which pins they are.
 
But in following the Model A/A+, many people get a powered USB Hub and add it to the single USB Port. With the R-Pi:0, it needs to have a mini-connector to connect to it.
http://www.instructables.com/id/DIY-micro-USB-Hub-for-Raspberry-Pi-Zero/
http://lifehacker.com/add-a-usb-hub-with-a-case-to-a-raspberry-pi-zero-175136889 5
http://raspberrypi.stackexchange.com/questions/38807/powered-usb-hub-for-pi-zero
Back to top
 
 
View Profile   IP Logged
Fernando
YaBB Administrator
*****
NY City




Posts: 2380
Gender: male
Raspberry Pi Zero - A review - continued...
Reply #3 - May 4th, 2016, 10:34pm
 
In the past posts on other threads I was touting how it is possible for many R-Pi systems to be bootable with Wheezy Raspbian. Apparently, this is a 50/50 chance of Wheezy working with the R-Pi:0. It turns out that if you have Wheezy that has not been updated and upgraded, it will not boot the R-Pi:0. But if your Wheezy was updated and upgraded, it will boot the R-Pi:0.
 
Why? The only answer I can give is that Wheezy has been given the added patches that will work on the R-Pi:0.
 
I discovered this today when I was testing out SD Cards and found a number of micro-SD's that would not boot on the R-Pi:0 but will on the R-Pi 2. It turns out that those cards that do not work on the R-Pi:0 were Wheezy Raspbian that were not updated or upgraded, but the 2 Wheezy Raspbian micro-SDs I have that works on the R-Pi:0 were updated and upgraded. That solved the mystery.
Back to top
 
 
View Profile   IP Logged
Pages: 1