Download link: 
➡ Click here: Raspberry pi zero w power consumption
In Model A, A+, and the Pi Zero, the USB port is connected directly to the SoC. Also, may I request you to create a single page, continuously updated with latest power numbers. Does it just run until the battery is flat. All it does is read the sensors once every 10 minutes and insert them into a MySQL table.
With the Pi Zero and these power saving techniques, you can extract a lot of usage even in low-power scenarios, like solar energy or running off a battery. The Sleepy Pi incorporates a stacking header on the Raspberry Pi GPIO which can be used with, for example, a PiRack and other expansion boards. Sorry, my english is really bad, if you downclock your core, i think you consume less power too. It is not suggested to power the Zero from a responsible USB port as the voltage often sags and can cause SD card corruption. Alternatively, you can download NOOBS. It is a small form factor device that connects to a carrier board, for example a circuit board inside an industrial product, and gives manufacturers an easy way to use the Glad Pi ecosystem in their own devices. This did increase the Pi run time but it was still not enough. SEE: Why does the Raspberry Pi Zero W matter?.
By 2017, it became the newest mainline Raspberry Pi. You will require at least or or newer. The Raspbian OS also includes , which allows users to build Internet of Things software using a drag and drop GUI.
Raspberry Pi Zero W - Sales reached ten million in September 2016.
WHAT IS A RASPBERRY PI? The Raspberry Pi is a credit-card-sized computer that plugs into your TV and a keyboard. It is a capable little computer which can be used in electronics projects, and for many of the things that your desktop PC does, like spreadsheets, word processing, browsing the internet, and playing games. It also plays high-definition video. We want to see it being used by adults and children all over the world to learn programming and digital making. CAN I BUY SHARES IN THE RASPBERRY PI FOUNDATION? If you want to support us, we would love you to buy a Raspberry Pi. BUYING AND SHIPPING 1. WHERE CAN I BUY A RASPBERRY PI? Go to our and choose the product s you want to buy. Then select your country from the drop-down menu. You will be presented with our approved resellers for your country. HOW MUCH DOES IT COST? WHAT DO I GET WHEN I BUY ONE? You get the Raspberry Pi board itself. A power supply and SD card are not included, but can be purchased at the same time from most places that sell the Raspberry Pi. You can also ; we recommend buying these from us or our licensed distributors rather than from third parties on eBay, as our software is updated regularly and cards sold by third parties can quickly become outdated. WHY IS THE PRICE IN US DOLLARS? YOU ARE A UK COMPANY! The components we buy are priced in dollars, and we negotiate manufacturing in dollars. CAN I BUY A RASPBERRY PI KIT? Raspberry Pi resellers produce for people who would rather get everything they need from a single source. In 2016, we put together our own Raspberry Pi Official Starter Kit. The kit is available to order online in the UK from our partners and , priced at £99+VAT, and from distributors and resellers around the world. IS THERE A BUY-ONE-GIVE-ONE PROGRAMME? Not at the current time. You can, of course, simply buy an extra Raspberry Pi to donate to the person or organisation of your choice. IS THE DEVICE AVAILABLE INTERNATIONALLY? I WANT TO BE A RASPBERRY PI RESELLER. We have an exclusive manufacturing and distribution arrangement with and. Resellers buy the Raspberry Pi in bulk from them which reduces shipping costs to nearly nothing and sell on. You do not need any special licence to resell, and the distributors are very happy to sell on to resellers. If you are interested in joining our programme, contact us by email to GENERAL 1. WHAT IS THE USERNAME AND PASSWORD FOR THE RASPBERRY PI? If this does not work, check the information about your specific distro on the. WHY DOES NOTHING HAPPEN WHEN I TYPE IN MY PASSWORD? DID MY RASPBERRY PI FREEZE? To protect your information, Linux does not display anything when you are entering passwords in the Bash prompt or the terminal. As long as you were able to see the username being typed in, your keyboard is working correctly. WHAT ARE THE DIFFERENCES BETWEEN MODELS? These are the which are currently available: the Pi 3 Model B, the Pi 2 Model B, the Pi Zero, the Pi Zero W and the Pi 1 Model B+ and A+. It has 512MB RAM as of August 2016: earlier models have 256MB , one USB port, 40 GPIO pins, and no Ethernet port. The Model B+ is the final revision of the original Raspberry Pi. It has 512MB RAM, four USB ports, 40 GPIO pins, and an Ethernet port. In February 2015, it was superseded by the Pi 2 Model B, the second generation of the Raspberry Pi. The Pi 2 shares many specs with the Pi 1 B+, and originally used a 900MHz quad-core ARM Cortex-A7 CPU and has 1GB RAM. Some recent version of the Pi 2 v1. The Pi 3 Model B was launched in February 2016. It uses a 1. The Pi Zero and Pi Zero W are half the size of a Model A+, with a 1Ghz single-core CPU and 512MB RAM, and mini-HDMI and USB On-The-Go ports and a camera connector. The Pi ZeroW also has integrated 802. The final model not described in the table above is the compute module CM , which is intended for industrial applications. It is a small form factor device that connects to a carrier board, for example a circuit board inside an industrial product, and gives manufacturers an easy way to use the Raspberry Pi ecosystem in their own devices. You can check our pages for more details on current boards. There are also some models of Raspberry Pi which are no longer in production, but which may be available second-hand or from resellers. The Model A was the initial low-cost variant of the Pi. It was replaced by the smaller, neater Model A+ in November 2014; it shares the same specs as the A+, but has only 26 GPIO pins and 128MB of RAM. The Model B was the previous incarnation of the B+; again, it shares most of the same specs, but has only two USB ports and 26 GPIO pins. The original version of the Pi Zero did not come with a camera connector, but all current versions have the connector as standard. HOW DO I CONNECT A MOUSE AND KEYBOARD? These can be used to connect most USB 2. Additional USB devices such as mice, keyboards, network adapters, and external storage can be connected via a USB hub. The Pi Zero and Pi Zero W have a single micro USB port, this requires a USB OTG cable to connect devices such as keyboards or hubs. To switch on, just plug it in. To switch off, if you are in the graphical environment, you can either log out from the main menu, exit to the Bash prompt, or open the terminal. Wait until all the LEDs except the power LED are off, then wait an additional second to make sure the SD card can finish its wear-levelling tasks and write actions. You can now safely unplug the Raspberry Pi. Failure to shut the Raspberry Pi down properly may corrupt your SD card, which would mean you would have to re-image it. NOOBS stands for New Out of Box Software. It is our recommended installation method. It allows you to install the distro of your choice, even if you have little to no computing or Linux experience. WHEN WILL THE NEXT MODEL OF THE RASPBERRY PI BE RELEASED? As of February 2016, the third generation of the Model B Raspberry Pi has been released. Beyond this revision, which upgraded the main processor on the board to a 64-bit version, there are no immediate plans to release any more new models. We concentrate our engineering effort on making the software that runs on the Raspberry Pi faster and better all the time, which is why you should always ensure that you are running the most recent firmware. WHAT ARE THE DIMENSIONS OF THE RASPBERRY PI? The Raspberry Pi Model B versions measure 85. The Pi Zero and Pi Zero W measure 65mm x 30mm x 5. For the mechanical outline, please see the documentation. WHAT HARDWARE DOCUMENTATION IS AVAILABLE? All available documentation is in our. WHAT SoC ARE YOU USING? The original Raspberry Pi used a Broadcom BCM2835. This contains a single core ARM1176JZFS with floating point, running at 700Mhz, and a Videocore 4 GPU. The GPU is capable of Blu-ray-quality playback, using H. It has a fast 3D core, accessed using the supplied OpenGL ES 2. The Pi 2 Model B originally used the Broadcom BCM2836. This contains a quad-core ARM Cortex-a7 processor with floating point and NEON, running at 900MHz, and the same Videocore 4 GPU that is in the earlier models of Raspberry Pi. The Pi 3 Model B uses the Broadcom BCM2837, containing a quad-core ARM Cortex-A53 running at 1. Its GPU capabilities are equivalent to the Pi 2. Some versions of the Pi 2 now use the same SoC as the Pi 3, but downclocked to match the speed of the original Pi 2 SoC. In the future every Pi 2 will use this newer SoC. WHAT IS AN SoC? A System on a Chip SoC is a method of placing all necessary electronics for running a computer on a single chip. Instead of having an individual chip for the CPU, , USB controller, RAM, northbridge, southbridge, and so on, everything is compressed down into one tidy package. WHY DID YOU SELECT THE SoC? HOW DOES IT BOOT? As standard, all the files necessary for booting are installed in a FAT32 partition of the SD card. DO YOU SELL A SELF-ASSEMBLY KIT? It would be too expensive for us to provide kits alongside finished boards, which would mean introducing another step in manufacturing. A kit would also be impossible to hand-solder. We use special equipment robots! PERFORMANCE AND COST CONSIDERATIONS 1. HOW POWERFUL IS IT? The provides OpenGL ES 2. Overall real-world performance for models A, A+, B, B+, CM, Zero and Zero W is something like a 300MHz Pentium 2, only with much better graphics. The Pi 2 Model B is approximately equivalent to an Athlon Thunderbird running at 1. The Pi 3 Model B is around twice as fast as the Pi 2 Model B, depending on the benchmarks chosen. The Raspberry Pi models A, A+, B, and B+ operate at 700 MHz by default. Most devices will run happily at 800MHz. The Pi 2 Model B operates at 900MHz by default and should run quite happily at 1000MHz. The Pi 3 Model B runs at 1. You can download the Raspbian image directly or install it via the NOOBS installer, both available on our. It should be noted, however, that these are experimental settings and that not every board will be able to run stably at the highest setting. If you experience problems, try reducing the overclocking settings until stability is restored. DOES IT NEED A HEATSINK? You should not need to use a heatsink, as the chip used in the Raspberry Pi is equivalent to one used in a mobile phone, and should not become hot enough to require any special cooling. However, depending on the case you are using and the overclocking settings, you might find a heatsink to be advantageous. We do recommend the use of a heatsink if you are overclocking the Pi 3 Model B. Of course, if you just like the look of one, you will not hurt the Raspberry Pi by placing an appropriately-sized heatsink on it. WHAT HARDWARE INTERFACES DOES IT HAVE? Depending on the model, the Raspberry Pi has either 40 or 26 dedicated pins. In all cases, these include a UART, an I2C bus, a SPI bus with two chip selects, I2S audio, 3V3, 5V, and ground. The maximum number of GPIOs can theoretically be indefinitely expanded by making use of the I2C or SPI bus. There is also a dedicated CSI-2 camera port for the , and a DSI display port for the. WHY IS THERE NO REAL-TIME CLOCK RTC? The expectation is that non-network-connected units will have their clocks updated manually at startup. Adding an RTC is surprisingly expensive once you have factored in batteries, area, and components, and would have pushed us above our target price. CAN I ADD EXTRA MEMORY? The RAM on the model A, A+, B, B+, and Zero is a Package on Package POP on top of the , so it is not removable or swappable. The RAM on the Pi 2 and 3 Model B versions is on a separate chip on the bottom of the PCB, but 1GB is the maximum RAM that the SoC used by the Pi 2 and 3 Model B versions can support. WHAT IS ITS OPERATING TEMPERATURE? The Raspberry Pi is built from commercial chips which are qualified to different temperature ranges; the LAN9514 LAN9512 on older models with 2 USB ports is specified by the manufacturers as being qualified from 0°C to 70°C, while the is qualified from -40°C to 85°C. WHAT IS THE CAMERA MODULE? The Camera Module is a small PCB that connects to the CSI-2 camera port on the Raspberry Pi using a short ribbon cable. It provides connectivity for a camera capable of capturing still images or video recordings. WHAT MODEL OF CAMERA DOES THE CAMERA MODULE USE? The Camera Module V2 is a Sony IMX219, while the original Camera Module is an Omnivision OV5647. They are comparable to cameras used in mobile phones. WHAT RESOLUTIONS ARE SUPPORTED? The Camera Module V2 is capable of taking photos up to 8 megapixels 8MP. It supports 1080p30, 720p60 and VGA90 video modes, as well as still capture. The original Camera Module is capable of taking photos up to 5 megapixels and can record video at resolutions up to 1080p30. WHICH PICTURE FORMATS ARE SUPPORTED? The Raspberry Pi Camera Modules supports raw capturing Bayer data direct from the sensor or encoding as JPEG, PNG, GIF and BMP, uncompressed YUV, and uncompressed RGB photos. They can record video as H. HOW DO I USE THE CAMERA? There a number of command line applications provided for stills and video output. These applications provide the typical features you might find on a compact camera, such as set image size, compression quality, exposure mode, and ISO. See the for more details. CAN I EXTEND THE RIBBON CABLE? We have reports of people using cables up to four metres in length and still receiving acceptable images, though your experience may differ. CAN I HAVE A CAMERA WITH MORE MEGAPIXELS? No; the Raspberry Pi Camera Modules are the only cameras that are compatible with the Raspberry Pi. There are currently no plans to release a higher-resolution sensor. HOW MUCH POWER DOES THE CAMERA MODULE USE? The Raspberry Pi Camera Modules requires 250mA to operate. Ensure that your power supply can provide enough power for the connected Camera Module, as well as for the Raspberry Pi itself and any peripherals directly attached to it. DOES IT COME WITH A CASE? An official case for the Raspberry Pi is. There are also lots of homebrew case discussions on the forum, as well as several third-party cases available. We suggest stopping by the and reading some of the threads about cases you can purchase or build yourself. DOES IT FIT IN AN ALTOIDS TIN? It is possible to make a case for the Raspberry Pi out of an Altoids tin: there are instructions given in a the directions are also available as an. However, you may find that this is not possible with older boards, as their form factors are not as neat. You can, of course, fit a Pi Zero into an Altoids tin with room to spare. WHAT DISPLAYS CAN I USE? There is composite and HDMI out on the board, so you can hook it up to an old analogue TV through the composite or through a composite to scart connector, to a digital TV or to a DVI monitor using a cheap, passive HDMI to DVI cable for the DVI. For the Model B+, Pi 2, and Pi 3, the RCA composite jack has been replaced with a 3. There are many different types of this cable out there, but you want to purchase one that is compatible with the iPod Video the iPod will have the left and right audio channels reversed, but the version of Raspbian included with NOOBS can swap this for you. The Pi Zero uses a mini-HDMI port. There is no VGA support, but active adapters are available. Passive HDMI to VGA cables will not work with the Raspberry Pi. When purchasing an active VGA adapter, make sure it comes with an external power supply. HDMI to VGA adapters without an external power supply often fail to work. DOES THE HDMI PORT SUPPORT CEC? Yes, the HDMI port on the Raspberry Pi supports the CEC Standard. WHY IS THERE NO VGA SUPPORT? The chip we use supports HDMI and composite outputs but does not support VGA. However, if you really want to use a VGA monitor with a Raspberry Pi then it is possible using an HDMI to VGA adapter. CAN I ADD A TOUCHSCREEN? This is available through the usual distributors. Alternatively, several third-party retailers offer a range of touchscreens for the Raspberry Pi. WHAT CODECS CAN IT PLAY? The Raspberry Pi can encode record and decode play H. There are also two additional codecs you can that enable you to decode , a very popular and widely used format to encode DVDs, video camera recordings, TV and many others, and , a Microsoft format found in Blu-ray discs, Windows Media, Slingbox, and HD-DVDs. IS SOUND OVER HDMI SUPPORTED? WHAT ABOUT STANDARD AUDIO IN AND OUT? There is a standard 3. WHAT ARE THE POWER REQUIREMENTS? The device is powered by 5V micro-USB. Exactly how much current mA the Raspberry Pi requires is dependent on which model you are using, and what you hook up to it. We recommend a 2. Very high-demand USB devices may however require the use of a powered hub. The table below outlines the specific power requirements of each model. Product Recommended PSU current capacity Maximum total USB peripheral current draw Typical bare-board active current consumption Raspberry Pi Model A 700mA 500mA 200mA Raspberry Pi Model B 1. The Raspberry Pi Model A, A+, and B can supply a maximum of 500mA to downstream USB peripherals. If you wish to connect a high-power USB device, it is recommended that you connect a powered USB hub to the Pi and connect your peripherals to the USB hub. This allows the vast majority of USB devices to be connected directly to these models, assuming the upstream power supply has sufficient available current. Very high-current devices or devices which can draw a surge current such as certain modems and USB hard disks will still require an external powered USB hub. The power requirements of the Raspberry Pi increase as you make use of the various interfaces on the Raspberry Pi. The GPIO pins can draw 50mA safely note that that means 50mA distributed across all the pins: an individual GPIO pin can only safely draw 16mA , the HDMI port uses 50mA, the Camera Module requires 250mA, and keyboards and mice can take as little as 100mA or as much as 1000mA! Check the power rating of the devices you plan to connect to the Pi and purchase a power supply accordingly. Here is a table comparing the amount of power drawn in A amps under different situations: Pi1 B+ Pi2 B Pi3 B amps Zero amps Boot Max 0. The Pi 3 Model B was connected to a WiFi access point. All these power measurements do not take into account power consumption from additional USB devices; they can easily be exceeded with multiple additional USB devices connected or when using a HAT. CAN I POWER THE RASPBERRY PI FROM A USB HUB? It depends on the hub. Some hubs comply with the USB 2. Other hubs view the USB standards more like guidelines, and will provide as much power as you want from each port. This means that the hubs will power the Raspberry Pi through its USB input cable, without the need for a separate micro-USB power cable, and bypass the voltage protection. CAN I POWER THE RASPBERRY PI FROM BATTERIES AS WELL AS FROM A WALL SOCKET? Running the Raspberry Pi directly from batteries requires special care and can result in damaging or destroying your Raspberry Pi. If you consider yourself an advanced user, though, you could have a go. For example, four AA rechargeable batteries would provide 4. Conversely, using four AA Alkaline non-rechargeable batteries will result in 6V. IS POWER OVER ETHERNET POSSIBLE? Not in the base device. There are adapters that would split the voltage off the Ethernet line before connecting to the Pi, but they are relatively expensive. WHAT OPERATING SYSTEM OS DOES IT USE? There are several official distributions distros available on our page. New users will probably find the NOOBS installer the easiest to work with, as it walks you through the download and installation of a specific distro. The recommended distro is Raspbian, which is specifically designed for the Raspberry Pi and which our engineers are constantly optimising. It is, however, a straightforward process to replace the root partition on the SD card with another ARM Linux distro, so we encourage you to try out several distros to see which one you like the most. The OS is stored on the SD card. DOES IT HAVE AN OFFICIAL PROGRAMMING LANGUAGE? The Raspberry Pi Foundation recommends Python as a language for learners. We also recommend Scratch for younger children. Any language which will compile for ARMv6 Pi 1 or ARMv7 Pi 2 can be used with the Raspberry Pi, though, so you are not limited to using Python. C, C++, Java, Scratch, and Ruby all come installed by default on the Raspberry Pi. WILL IT RUN WINE OR WINDOWS, OR OTHER X86 SOFTWARE? In general, this is not possible with most versions of the Raspberry Pi. Some people have put Windows 3. As of summer 2015, a version of Windows 10 is available for use on the Raspberry Pi 2 and 3. This is an entirely new version of the operating system designed exclusively for embedded use, dubbed the Windows 10 Internet of Things IoT Core. WILL IT RUN THE WINDOWS 8 ARM EDITION? Most models of Raspberry Pi lack the minimum memory and CPU requirements to support Windows 8 ARM edition. The Raspberry Pi also lacks the appropriate axis sensors, and there are many other limiting factors which mean that running Windows 8 ARM edition is not possible. WHAT LINUX DISTROS RUN ON THE PI? Raspbian based on Debian , Arch Linux run on the Raspberry Pi 1, 2, and 3. Ubuntu MATE and Ubuntu Snappy Core run on Pi 2 and 3 only. There are also other community-developed distributions available. See our for more information. WILL IT RUN ANDROID OR ANDROID THINGS? Raspberry Pi does not support the consumer version of Android that you may be familiar with from your mobile phone. While a version can be found in , we do not consider it to be stable or performant enough for everyday use. Google supports Android Things on the Raspberry Pi 3 as a development platform. Android Things is a variant of the Android platform enabling developers to build software for embedded and Internet of Things IoT devices with the Android SDK. To learn more about the platform and how to get started, visit. In most cases, the answer will be yes. Specific programs are discussed on , so you might want to look there for an answer. Ultimately, nothing beats grabbing a Raspberry Pi and finding out the answer through direct testing! SD CARDS AND STORAGE 1. WHAT SIZE SD CARD DO I NEED? Whether you want to use the NOOBS installer or a standalone image, the minimum size SD card we recommend using is 8GB. This will give you the free space you need to install additional packages or make programs of your own. The original and require full-size SD cards. The newer , , , , , and require micro SD cards. WHAT SIZE SD CARD CAN IT SUPPORT? We have tried cards up to 128GB, and most cards seem to work OK. You can also attach a USB stick or USB hard drive to provide extra storage. WHAT HAPPENS IF I BRICK THE DEVICE? If you the device, you can restore it by reflashing the SD card. NETWORKING, USB AND WIRELESS 1. DOES THE DEVICE SUPPORT NETWORKING? There is no Ethernet on the Model A, Model A+, and Zero versions. IS THERE BUILT-IN WIFI? Only the Pi 3 and Pi Zero W have built in WiFi, but all other models can support a USB WiFi dongle. The Foundation offers its own branded WiFi dongle which has been fully tested for use with the Raspberry Pi. You can, of course, use a dongle from another provider if you wish. IS THERE BUILT-IN BLUETOOTH? Only on the Pi 3 and Pi Zero W. WHY IS THERE NO GIGABIT ETHERNET? The Ethernet is attached via the USB 2. You can use a USB2. DOES THE DEVICE HAVE SUPPORT FOR ANY FORM OF NETBOOTING OR? There is also , which is a free and open-source community-based project initially designed for schools. Each Raspberry Pi boots off a small set of startup files on an SD card and fetches the rest of the data it needs from the PiNet server, thereby allowing you to maintain a single operating system image for all the Raspberry Pis. PiNet also adds network user accounts, shared folders and automated backups. HOW DO YOU CONNECT MORE USB DEVICES? Use a USB hub to increase the number of ports. Some keyboards have USB hubs built in which would work well. It is highly recommended that you use a powered USB hub. WHAT EDUCATIONAL MATERIAL IS AVAILABLE? There are many books about the Raspberry Pi available. For children, we particularly recommend by Carrie Anne Philbin, who works with us at the Raspberry Pi Foundation. Check out our resources pages for : we are always adding to these. We also offer for educators and other interested users. ADDITIONAL QUESTIONS I STILL HAVE MORE QUESTIONS! Read the sticky subjects in the and check the for more information. If the answer is not there, ask in , where there are lots of helpful Raspberry Pi owners, users, and fans who will be more than happy to help you out. GLOSSARY BGA: Ball grid array. A type of surface mount packaging for electronics. Brick: To accidentally render a device inert by making changes to software or firmware. A pin that can be programmed to perform a wide range of tasks. GPU: Graphics processing unit. The hardware that handles the graphics. PoE: Power over Ethernet. Powering a device via an Ethernet cable. PXE: Preboot execution environment. A way to get a device to boot via the network. SoC: System on a Chip. A computer on a single chip.