To develop small size devices Raspberry PI 3 u Odroid C2 they are too big, and such projects require more compact platforms; the response of the Raspberry PI Foundation faced with this growing need has been the tiny Raspberry PI Zero at an affordable price of 5$.
I made with one of the coveted PI Zero, and taking the opportunity I'm going to share with you My first impressions, as well as the most relevant technical characteristics in this small micro computer oriented to the education and the development of projects focused to the Internet of Things.
This little device is the same as the first model of Raspberry PI, a ARMv6 BCM2835, but with factory overclock which means a increase of the 40% in the performance; should be noted that He has dispensed with the slots for camera and the display in this version of the plate.
It is distributed as kit to reduce manufacturing costs, and thus the retail price; so in order to use the port GPIO, We must weld the strip of 40 PIN accompanying to the Pizer; also includes four additional pin, two for the video compound, and two to add a button or reset button.
We have two ports microUSB, the right wing dedicated to feed this small computer, and the one on the left is the USB OTG that allows us to attaching peripheral devices; However, If we plan to connect high consumption devices We will need a usb hub with external power supply.
There are an infinite number of boxes and Accessories for Rasperry Pi Zero, and I I've opted for PI Zebra, a box finished in wood and with sink included You can see in the following picture next to the adapters of USB OTG and of miniHDMI to HDMI.
In the table below I have compiled the technical characteristics most relevant, and the results of the benchmarks so you can compare them with the previous models Raspberry PI 2, Raspberry PI 3, and Raspberry PI B +.
|Raspberry PI B +||Raspberry PI Zero
||Raspberry PI 2||Raspberry PI 3|
||ARMv6 700 Mhz||ARMv6 1 GHz||ARMv7 cortex QuadCore 900 MHz||ARMv8 quad core 1.2 GHz cortex|
|GPU||VideoCore IV Dual Core 250MHz||VideoCore IV Dual Core 250MHz||VideoCore IV Dual Core 250MHz||VideoCore IV Dual Core 400MHz|
||512MB||512MB||1024MB (1GB)||1024MB (1GB)|
|Ethernet/WiFi||Ethernet 10/100||The Ethernet Dongle 10/100||Ethernet 10/100||Ethernet 10/100 – WiFi 802.11 b/g/n|
|Power||5In 1A||5V 750mA||5In (2A)||5.1In 2.5 and|
| Minimum temperature
||37.9° C||34.2° C||33.1° C|
| Maximum temperature
||50.8° C||38.5° C||50.8° C||48.7° C|
| Read rate
||10.03 MB/s||13.30 MB/s||10.46 MB/s||10.46 MB/s|
| Rate of writing
||3.34 MB/s||7.34 MB/s||3.34 MB/s||3.34 MB/s|
| Upload speed
||2.21 MB/s||27.47 MB/s||2.21 MB/s||2.21 MB/s|
|Down speed||2.84 MB/s||111.71 MB/s||2.84 MB/s||2.84 MB/s|
| VAX Mips
| Test of glazesality
The connection tests have been made with a ethernet dongle 10/100 USB 2.0, and the of temperature with the aluminum heatsink that includes PiZebra; You can then download the test logs in all four models.
|Raspberry PI B +||Raspberry PI Zero||Raspberry PI 2||Raspberry PI 3|
In short it is a device with a very good relationship quality price, and dimensions of performance; Although somewhat limited in as to connectivity referred to in.
If you like you can follow me on Twitter, Facebook, Google +, LinkedIn, Feedly, or share it with the buttons under this publication, If you have any questions or suggestions please do not hesitate to comment.