a) Buy Micro USB RJ45 adapter for $2.74 including shipping
b) USB RJ45 adapter for $1.50 and a Micro USB OTG adapter for $0.23 (total price $1.73)
Some of the articles may be cheaper if you buy them using the mobile app.
EDIT: The Micro USB OTG adapter in option "b" is no longer available at the linked location.
I've had a look at the schematic; the data pins for the micro USB connection are not connected to anything. Therefore, there is no way to mount the RPi as an external device.
It could be possible to mount the RPi's hard drive or login over the network by using SSH.
The GPIO pins include a set of UART data lines, which could be used to form a serial ...
No, the Pi Zero does not support ethernet over HDMI.
Unfortunately the schematics for the Pi Zero are not available (edited: an overview schematics is available now, see updated information below). However since it is essentially an minimized Pi 1 I'd bet that the HDMI circuitry is (nearly) the same - though the Pi 1 features a standard sized HDMI connector ...
Ethernet over SPI
One of the cheapest ways is to connect an Ethernet controller over the SPI bus. Such a controller could be for example ENC28J60 which is often being used for Ethernet connectivity for Arduino. Latest Linux kernels for Raspberry Pi have a driver with a device tree overlay. See for example https://github.com/raspberrypi/linux/issues/795
If you don't want to click links, the Raspberry Pi can handle 4.75v to 5.25v.
As for the current draw/power consumption, here are some numbers:
All of these are bare-bone (does not have any peripherals/accessories attached)
*** Fun Fact (Tested on Pi1 B+) ***
Any turned-off Raspberry Pi that's still plugged in: 75 mA
*** Idle ***
Raspberry Pi 2 B: ...
No. The Pi Zero uses the BCM2835 system-on-a-chip, which combines a CPU and a VideoCore 4 GPU -- the same basic SoC as on the Pi A/B/+ models although with a faster clock speed (which does not necessarily mean it was manufactured any differently1).
My understanding is that the GPU bootstraps the CPU and loads a kernel into it. Although the kernel can be ...
No, it won't run on Pi Zero. It's because of the hardware. The Pi zero and the first-generation Pis (BCM2835) use ARMv6. The Pi2 (BCM2836) uses ARMv7.
Windows 10 IoT Core needs ARMv7.
If I'm going to explain it to a layman, I'll say "The CPU is different".
I took a quick look at some light and powerful lithium polymer batteries, and it looks to me like a battery similar in scale to the Zero is not going to provide much capacity. Let's keep in mind that the computer only weighs 9 g. A LiPo of similar size  contains a about 1.3 W*h of energy, which won't power the Pi Zero for a full 3 hours, even idle.  To ...
Like @SteveRobillard stated in his comment, it's probably best just to buy the powered hub first and save you the possible trouble of not having it in the first place if you needed it.
There are OTG [On the Go] hubs, which are micro usb. They work a bit differently than a standard usb hub, which uses a barrel jack for power. This one from eBay is extremely ...
Absolutely DO NOT connect the battery in parallel with the load. The charger will not know if the battery is full or not and will continue to pump power both to the battery and the step-up converter.
Since the battery is still receiving power and is still charging, it will overcharge and explode.
If you want to do this properly, you should use a proper ...
There's a command line utility, tvservice built into Raspbian that will tell you the state of the HDMI.
To detect the full state, you can use the command: tvservice -s. On my RPi this currently outputs:
state 0x40001 [NTSC 4:3], 720x480 @ 60.00Hz, interlaced
The states (that I've gathered) are as follows:
0x40001 Not initialized and HDMI cable is ...
Yes. As far as I can remember, pretty much every Pi I've ever tried to play 1920x1080 video on has worked, up to and including the very first generation boards. You can see a brief sample of the Zero playing back 1080 resolution footage from Big Buck Bunny using Kodi on the KordKutters Youtube channel. Looks fine to me, although the presenter notes a little ...
On Raspberry Pi there is no signal on HDMI unless the VideoCore IV Chip has been initialized. This is done by reading the special firmware (bootcode.bin/start.elf) from the boot partition. So unless you have an SD-Card present, you won't be able to see anything.
For me, the cheapest and easiest way to get Ethernet to the Zero was over USB to my host. I found the link here was the easiest and quickest, set a static IP for the USB0 network connection and it works perfectly for SSH to the Zero when plugged into USB on my laptop and desktop. On windows 10 it does come up as a USB serial port, you have to specify the ...
You can do better than that micro USB adapter. Try this guy out: http://www.amazon.com/dp/B015XA3W0G/. I'm still waiting for my Pi Zero to show up, but I was able to test that adapter with another couple of devices: https://twitter.com/techhat/status/674249853174546432.
NO polyfuse for raspberry pi zero
Thanks to Joan I got the information to complete this request.
Here are the schematics for the power supply of both raspberry pi Zero and PRI 3, .
Raspberry Pi Zero without fuse:
And Here for comparision RPI3 with polyfuse:
Clusters generally work well for tasks that can be parallelised—i.e. you can split the task into lots of small ones that can run at the same time. Fortunately, cryptocurrencies are ideal for that, and a mining pool is essentially a really big cluster for mining cryptocurrencies.
Since proof of work essentially boils down to trying many combinations and ...
As the data pins of the micro USB port are not connected to the SoC's USB PHY you cannot use this port for data (in either host or slave mode).
It should be possible however to use the USB Type A port on the Model A in slave mode.
Some further details;
The Model B uses a SMSC LAN9512 USB 2.0 Hub and 10/100 Ethernet Controller IC to provide multiple ...
They may have up the price because they are out of stock elsewhere, so they make more money. It should retail at £4/$5 (source) for the board on its own.
However various packs are available which include a accessories kit (USB and HDMI cables) and/or a microSD card, which will up the price to almost 20.
Links to official suppliers are in the release ...
The way I initially connected was with a USB serial dongle at the PC end connected to the Pi's UART and ground.
You can then use terminal emulator software to log in to the Pi. You then have the old fashioned 80x25 text window to enter commands etc.
I think Windows users tend to use a tool called putty for the emulator (there was a tool called ...
The PI Zero does not have a power LED, only an activity LED which becomes active when the PI Zero boots and is able to read the SD Card. This can be misleading.
Other users have reported problems getting previously used SD Cards from other Pi systems to work in the Zero. Following this thread, the solution was to use a fresh install on a fresh SD Card.
Given the significant differences in the voltage levels it is not safe to directly connect any RS232 signal lines to the Pi's GPIO. Even if the voltage of some RS232 drivers might be as low as 3 V, the logic one (called "mark") is represented as a negative voltage which will kill the Pi.
The standard specifies a maximum open-circuit ...
If cheapest was the only requirement I would go with an ESP8266-01 WiFi module like this one. Total cost $3.50 US including shipping. There are a few tutorials covering how to use these with the Pi:
Connect an ESP8266 to your RaspberryPi,
Getting started with ESP-01 and Raspberry Pi.
You may want to spend a few more dollars and go with one of the higher ...
Given that not even the schematics of the Pi2 are released I doubt that we will see the electrical design any time soon. (And there might of course be valid concerns at the Foundation to not release them.)
However the mechanical drawings are available at raspberrpi.org in the section documentation > hardware > raspberrypi > mechanical.
It will work if you have the A/B/+ kernel on there and have not set a kernel= in config.txt. There is no OS image or kernel for the zero distinct from the A/B/+ models, so if you buy a card with it that's what you are getting. Since the 2 came out, images have had 2 kernels in them, kernel.img (A/B/+) and kernel7.img (Pi 2).
While there are some minor ...
You are probably not doing anything wrong. It seems to me that the real issue is that the instructions, as written, don't work generically. The point at which you are apparently stuck is the chown command, but all that is intended to accomplish is to make sure that "you" (really the pi user) actually owns the folder to be shared.
If you created the /...
My question is if we use the zero for Retro-pi and want to later add raspbian will we have enough RAM to do both or should I buy a different model to begin with?
RAM isn't an issue WRT to multiple operating system installs, since you can only run one at a time. What is relevant is permanent storage -- i.e., the SD card size. And the easiest, most trouble-...