Next, youll need to download the image file of Raspberry Pi Desktop from the Raspberry Pi Foundations site. With a quad-core 64-bit ARM Cortex-A53 processor clocked at 1GHz and 512MB of SDRAM, Zero 2 is up to five times as fast as the original Raspberry Pi Zero. How to use Raspberry Pi in IoT projects? SAFETY INSTRUCTIONS It falls behind the Raspberry Pi in pure performance, it has to be said, but its nevertheless a worthy addition to our list of the best Raspberry Pi alternatives. Fill out the fields. Tuning Performance. Plenty of connectivity provided by dual Micro HDMI, 2- lane MIPI DSI and CSI display and camera ports, 2x USB 2.0, 2x USB 3.0, gigabit Ethernet, 2.4 and 5.0 GHz Wi-Fi, and Bluetooth 5.0. Rich I/O peripherals to further expand your projects. The original Raspberry Pi used an RCA connector, and a standard RCA composite video lead will work. The OS comes with over 35,000 packages: precompiled software bundled in a nice format for easy installation on your Raspberry Pi. Exploring Raspberry Pi first covers the basics of the hardware platform, recommended accessories, software, embedded Linux systems, and Linux programming techniques. Raspberry Pi Zero 2 W. Priced at $15, Raspberry Pi Zero 2 W uses the same Broadcom BCM2710A1 SoC die as the launch version of Raspberry Pi 3, with Arm cores slightly down-clocked to 1GHz, bundled into a single space-saving package alongside 512MB of LPDDR2 SDRAM. It falls behind the Raspberry Pi in pure performance, it has to be said, but its nevertheless a worthy addition to our list of the best Raspberry Pi alternatives. The original Raspberry Pi used an RCA connector, and a standard RCA composite video lead will work. New product alert! Tuning Performance. The Raspberry Pi uses a configuration file instead of the BIOS you would expect to find on a conventional PC. Nearly all aspects of the camera tuning can be changed by users. How to use Raspberry Pi in IoT projects? mouse, keyboard, etc.) Then it takes you deeper into interfacing, controlling, and communicating, with detailed information about Raspberry Pi GPIOs, buses, UART devices, and USB peripherals. This requires a particular type of lead, with audio left on the tip, audio right on ring 1, ground on ring 2, and video on the sleeve. Connected LEGO Technic devices can easily be controlled in Python, alongside standard Raspberry Pi accessories such as a camera module. Then it takes you deeper into interfacing, controlling, and communicating, with detailed information about Raspberry Pi GPIOs, buses, UART devices, and USB peripherals. Example GPIO code: // // How to access GPIO registers from C-code on the Raspberry-Pi // Example program // 15-January-2012 // Dom and Gert // Revised: This paper RPi Low-level peripherals. Connected LEGO Technic devices can easily be controlled in Python, alongside standard Raspberry Pi accessories such as a camera module. You can see Floris other software, for data centres, here. Back to the Hub. Assembling the Raspberry Pi TV HAT. Featuring a quad-core 64-bit processor, 4GB of RAM, wireless networking, dual-display output, and 4K video playback, as well as a 40-pin GPIO header, it's the most powerful and easy-to-use Raspberry Pi computer yet. Except for Raspberry Pi Zero, all Raspberry Pi models are equipped with WiFi. Raspberry Pi Zero 2 W is the latest product in our most affordable range of single-board computers. The Raspberry Pi 4 Model B is the latest product in the Raspberry Pi range, boasting a 64-bit quad core processor running at 1.5GHz, dual-band 2.4GHz and 5GHz wireless LAN, Bluetooth 5.0/BLE, true Gigabit Ethernet, and PoE capability via a separate PoE HAT. Select 4 Official 15W Power Supply US - White Raspberry Pi 4 Official 15W Power Supply US - White $7.99 Raspberry Pi 4 B Enclosure Select Model 3 Model B Case Raspberry Pi Model 3 Model B Case $8.99 Background & Software Setup. If you dont have a model of Raspberry Pi that has Bluetooth built-in, you can use a third-party USB adapter to add support. This is necessary because the EMMC is not removable and an invalid recovery.bin file would prevent the system from booting. It is much easier to add support for new cameras. A single Raspberry The successor to the breakthrough Raspberry Pi Zero W, Raspberry Pi Zero 2 W The cables and connectors of all peripherals used with this product must have adequate insulation so that relevant safety requirements are met. For Raspberry Pi 3, 3+, 4, 400 and Zero 2 W, and Raspberry Pi Compute Modules 3, 3+ and 4 default 64-bit build configuration Copy to Clipboard cd linux KERNEL=kernel8 make bcm2711_defconfig These tiny, cost-effective, versatile, and portable computers are perfect for any DIY raspberry Pi IoT project. Back to the Hub. Our guide to the best Raspberry Pi alternatives now comes to an end. Flash, plug, wait, enjoy: The provided image is based on the Raspberry Pi OS Lite (opens new window) (previously called Raspbian) standard system. The OS comes with over 35,000 packages: precompiled software bundled in a nice format for easy installation on your Raspberry Pi. Raspberry Pi Zero 2 W is the latest product in our most affordable range of single-board computers. Adafruit Industries, Unique & fun DIY electronics and kits : Raspberry Pi - Tools Gift Certificates Arduino Cables Sensors LEDs Books Breakout Boards Power EL Wire/Tape/Panel Components & Parts LCDs & Displays Wearables Prototyping Raspberry Pi Wireless Young Engineers 3D printing NeoPixels Kits & Projects Robotics & CNC Accessories Cosplay/Costuming Halloween Reseller This requires a particular type of lead, with audio left on the tip, audio right on ring 1, ground on ring 2, and video on the sleeve. Back to the Hub. Compare Item HyperPixel 4.0 Square - Touch Display for Raspberry Pi> Compare Pimoroni HyperPixel 4.0 Square - Touch Display for Raspberry Pi; Capacitive Touch - PIM470 - High-speed DPI interface; 60 FPS frame rate; 4.0" IPS (wide viewing angle, 160) display (72x72mm) The other two serial interfaces are the Serial Peripheral Interface (SPI) and Inter-Integrated-Circuit bus (I2C). The exact performance uplift over Zero varies across workloads, but for multi Raspberry Pi 400 Personal Computer Kit. Raspberry Pi OS is a free operating system based on Debian, optimised for the Raspberry Pi hardware, and is the recommended operating system for normal use on a Raspberry Pi. These tiny, cost-effective, versatile, and portable computers are perfect for any DIY raspberry Pi IoT project. Download the Raspberry Pi Imager from our downloads page today. The Raspberry Pi 4 Model B is the latest product in the Raspberry Pi range, boasting a 64-bit quad core processor running at 1.5GHz, dual-band 2.4GHz and 5GHz wireless LAN, Bluetooth 5.0/BLE, true Gigabit Ethernet, and PoE capability via a separate PoE HAT. This is necessary because the EMMC is not removable and an invalid recovery.bin file would prevent the system from booting. Example GPIO code: // // How to access GPIO registers from C-code on the Raspberry-Pi // Example program // 15-January-2012 // Dom and Gert // Revised: This paper RPi Low-level peripherals. The successor to the breakthrough Raspberry Pi Zero W, Raspberry Pi Zero 2 W The cables and connectors of all peripherals used with this product must have adequate insulation so that relevant safety requirements are met. Instructions. The code currently in code.py is just another print statement, the Expansion Boards - GPIO plug-in boards providing additional functionality.. Select "Broadcomm [Raspberry Pi 2 & 3]" as the device type. Screens - attaching a screen to the Raspberry Pi.. Cases - This can be overridden and used with self-update mode where the bootloader can be updated from USB MSD or Screens - attaching a screen to the Raspberry Pi.. Cases - On first boot, the system will set up openHAB, its tools and settings. Assembling the Raspberry Pi TV HAT. Decent specifications combine with good expandability via USB, Ethernet, and 40-pin GPIO header, all at a cool $25. 5.3 USB The Pi4B has 2x USB2 and 2x USB3 type-A sockets. Frequently bought together. Fit the HAT on to the Raspberry Pis GPIO pins Any other peripherals (e.g. Remember, whatever is in code.py will run when the system is started, and changes saved to code.py will run immediately.. Raspberry Pi 4 B+ (RP4) is the lasted model developed by the company, which has all the required latest wired and wireless communications systems used in most of the smart projects. We set out to make the system as modular as possible to make the system easier to methodically debug. You can see Floris other software, for data centres, here. In January last year, we launched the $4 Raspberry Pi Pico, our first product built on silicon designed here at Raspberry Pi. Background & Software Setup. Raspberry Pi 400 is your complete personal computer, built into a compact keyboard. In January last year, we launched the $4 Raspberry Pi Pico, our first product built on silicon designed here at Raspberry Pi. The code currently in code.py is just another print statement, the Fit the HAT on to the Raspberry Pis GPIO pins A single Raspberry Assembling the Raspberry Pi TV HAT. Nearly all aspects of the camera tuning can be changed by users. You're probably already familiar with the UART serial port, which allows you to open a login session from a serial terminal application, such as PuTTY.. Exploring Raspberry Pi first covers the basics of the hardware platform, recommended accessories, software, embedded Linux systems, and Linux programming techniques. 3rd parties can add support directly for their own cameras. The successor to the breakthrough Raspberry Pi Zero W, Raspberry Pi Zero 2 W The cables and connectors of all peripherals used with this product must have adequate insulation so that relevant safety requirements are met. The Raspberry Pi 4 Model B is the latest product in the Raspberry Pi range, boasting a 64-bit quad core processor running at 1.5GHz, dual-band 2.4GHz and 5GHz wireless LAN, Bluetooth 5.0/BLE, true Gigabit Ethernet, and PoE capability via a separate PoE HAT. These tiny, cost-effective, versatile, and portable computers are perfect for any DIY raspberry Pi IoT project. You can see Floris other software, for data centres, here. The OS comes with over 35,000 packages: precompiled software bundled in a nice format for easy installation on your Raspberry Pi. This is useful for the Raspberry Pi 1, 2, and Zero models, which are based on the BCM2835 and BCM2836 chips, and in situations where a Raspberry Pi 3 fails to boot (the latest bootcode.bin includes additional bugfixes for the Raspberry Pi 3B, compared to Raspberry Pi Zero 2 W is the latest product in our most affordable range of single-board computers. After a mapping was decided upon, connectors were soldered and crimped to connect the various peripherals to the Raspberry Pi. 5.3 USB The Pi4B has 2x USB2 and 2x USB3 type-A sockets. Our guide to the best Raspberry Pi alternatives now comes to an end. mouse, keyboard, etc.) Except for Raspberry Pi Zero, all Raspberry Pi models are equipped with WiFi. The Raspberry Pi single-board computer has had built-in Bluetooth connectivity since the release of the Raspberry Pi 3 in 2016, allowing you to connect wireless peripherals such as keyboards, game controllers, headsets, and more to your device. Then it takes you deeper into interfacing, controlling, and communicating, with detailed information about Raspberry Pi GPIOs, buses, UART devices, and USB peripherals. The Raspberry Pi has three types of serial interface on the GPIO header. # Raspberry Pi prepackaged SD card image. The code currently in code.py is just another print statement, the The Raspberry Pi single-board computer has had built-in Bluetooth connectivity since the release of the Raspberry Pi 3 in 2016, allowing you to connect wireless peripherals such as keyboards, game controllers, headsets, and more to your device. The other two serial interfaces are the Serial Peripheral Interface (SPI) and Inter-Integrated-Circuit bus (I2C). Expansion Boards - GPIO plug-in boards providing additional functionality.. The Raspberry Pi TV HAT requires very minor assembly and no soldering.. First fit the 40-pin header on top of your Raspberry Pis existing GPIO header: Then take the HAT and fit either 3 spacers and screws for using with the Raspberry Pi Zero, or 2 spacers and screws for a Model B:. Improved quad-core BCM2711 64 bit ARM processor clocked at 1.5 GHz and 8gb DDR4 RAM make this the most powerful Raspberry Pi yet. Raspberry Pi and 3rd parties can fix bugs and problems in the camera stack. The Pi4B has 1x Raspberry Pi 2-lane MIPI CSI Camera and 1x Raspberry Pi 2-lane MIPI DSI Display connector. The file manager will open up in the CIRCUITPY folder on the Pico, and youll see code.py.Select this. Raspberry Pi and 3rd parties can fix bugs and problems in the camera stack. For Raspberry Pi 3, 3+, 4, 400 and Zero 2 W, and Raspberry Pi Compute Modules 3, 3+ and 4 default 64-bit build configuration Copy to Clipboard cd linux KERNEL=kernel8 make bcm2711_defconfig This can be overridden and used with self-update mode where the bootloader can be updated from USB MSD or In January last year, we launched the $4 Raspberry Pi Pico, our first product built on silicon designed here at Raspberry Pi. Now that weve both VirtualBox and Raspberry Pi Desktop downloaded, were ready to launch VirtualBox and create a new virtual machine. The Pi4B has 1x Raspberry Pi 2-lane MIPI CSI Camera and 1x Raspberry Pi 2-lane MIPI DSI Display connector. The interpreter should run and print back Hello. It falls behind the Raspberry Pi in pure performance, it has to be said, but its nevertheless a worthy addition to our list of the best Raspberry Pi alternatives. N.B. These connectors are backwards compatible with legacy Raspberry Pi boards, and support all of the available Raspberry Pi camera and display peripherals. Improved quad-core BCM2711 64 bit ARM processor clocked at 1.5 GHz and 8gb DDR4 RAM make this the most powerful Raspberry Pi yet. Raspberry Pi 4 B+ (RP4) is the lasted model developed by the company, which has all the required latest wired and wireless communications systems used in most of the smart projects. Now that weve both VirtualBox and Raspberry Pi Desktop downloaded, were ready to launch VirtualBox and create a new virtual machine. The system configuration parameters, which would traditionally be edited and stored using a BIOS, are stored instead in an optional text file named config.txt.This is read by the GPU before the ARM CPU and Linux are initialised. Run the Windows 10 IoT Core Dashboard and click on Set up a new device and insert an SD card into your computer. Select "Broadcomm [Raspberry Pi 2 & 3]" as the device type. It is mini size computer used mostly to run larger and smart programs to achieve output quickly. It is much easier to add support for new cameras. Run the Windows 10 IoT Core Dashboard and click on Set up a new device and insert an SD card into your computer. Raspberry Pi Zero 2 W. Priced at $15, Raspberry Pi Zero 2 W uses the same Broadcom BCM2710A1 SoC die as the launch version of Raspberry Pi 3, with Arm cores slightly down-clocked to 1GHz, bundled into a single space-saving package alongside 512MB of LPDDR2 SDRAM. Fit the HAT on to the Raspberry Pis GPIO pins The other two serial interfaces are the Serial Peripheral Interface (SPI) and Inter-Integrated-Circuit bus (I2C). Raspberry Pi Imager is fully open source and was originally written as a modification of the PiBakery tool, later modified and finished by Floris Bos (the original writer of the NOOBS tool and the PiServer tool). New product alert! It is mini size computer used mostly to run larger and smart programs to achieve output quickly. Now click the Load button. Others models (Raspberry Pi B+ and later) combine the audio out and composite out on to the same 3.5mm jack. Now that weve both VirtualBox and Raspberry Pi Desktop downloaded, were ready to launch VirtualBox and create a new virtual machine. After a mapping was decided upon, connectors were soldered and crimped to connect the various peripherals to the Raspberry Pi. Fill out the fields. Flash, plug, wait, enjoy: The provided image is based on the Raspberry Pi OS Lite (opens new window) (previously called Raspbian) standard system. Except for Raspberry Pi Zero, all Raspberry Pi models are equipped with WiFi. Screens - attaching a screen to the Raspberry Pi.. Cases - For Raspberry Pi 3, 3+, 4, 400 and Zero 2 W, and Raspberry Pi Compute Modules 3, 3+ and 4 default 64-bit build configuration Copy to Clipboard cd linux KERNEL=kernel8 make bcm2711_defconfig Improved quad-core BCM2711 64 bit ARM processor clocked at 1.5 GHz and 8gb DDR4 RAM make this the most powerful Raspberry Pi yet. Wireless LAN is built in to a shielded enclosure with improved RF compliance, giving you more flexibility when designing with Raspberry Pi Zero 2 W. Raspberry Pi 400 is your complete personal computer, built into a compact keyboard. This is necessary because the EMMC is not removable and an invalid recovery.bin file would prevent the system from booting. Raspberry Pi 400 is your complete personal computer, built into a compact keyboard. Background & Software Setup. You're probably already familiar with the UART serial port, which allows you to open a login session from a serial terminal application, such as PuTTY.. A single Raspberry The Raspberry Pi 4 Model B is the latest product in the Raspberry Pi range, boasting a 64-bit quad core processor running at 1.5GHz, dual-band 2.4GHz and 5GHz wireless LAN, Bluetooth 5.0/BLE, true Gigabit Ethernet, and PoE capability via a separate PoE HAT. This is useful for the Raspberry Pi 1, 2, and Zero models, which are based on the BCM2835 and BCM2836 chips, and in situations where a Raspberry Pi 3 fails to boot (the latest bootcode.bin includes additional bugfixes for the Raspberry Pi 3B, compared to Flash, plug, wait, enjoy: The provided image is based on the Raspberry Pi OS Lite (opens new window) (previously called Raspbian) standard system. It is mini size computer used mostly to run larger and smart programs to achieve output quickly. Raspberry Pi is a small-sized computer used Linux operating system. Adafruit Industries, Unique & fun DIY electronics and kits : Raspberry Pi - Tools Gift Certificates Arduino Cables Sensors LEDs Books Breakout Boards Power EL Wire/Tape/Panel Components & Parts LCDs & Displays Wearables Prototyping Raspberry Pi Wireless Young Engineers 3D printing NeoPixels Kits & Projects Robotics & CNC Accessories Cosplay/Costuming Halloween Reseller Wireless LAN is built in to a shielded enclosure with improved RF compliance, giving you more flexibility when designing with Raspberry Pi Zero 2 W. The interpreter should run and print back Hello. You can integrate IoT with Raspberry Pi to explore your imagination easily and without wasting time. Download the Raspberry Pi Imager from our downloads page today. Raspberry Pi 400 Personal Computer Kit. Compare Item HyperPixel 4.0 Square - Touch Display for Raspberry Pi> Compare Pimoroni HyperPixel 4.0 Square - Touch Display for Raspberry Pi; Capacitive Touch - PIM470 - High-speed DPI interface; 60 FPS frame rate; 4.0" IPS (wide viewing angle, 160) display (72x72mm) Plenty of connectivity provided by dual Micro HDMI, 2- lane MIPI DSI and CSI display and camera ports, 2x USB 2.0, 2x USB 3.0, gigabit Ethernet, 2.4 and 5.0 GHz Wi-Fi, and Bluetooth 5.0. The Raspberry Pi 4 Model B is the latest product in the Raspberry Pi range, boasting a 64-bit quad core processor running at 1.5GHz, dual-band 2.4GHz and 5GHz wireless LAN, Bluetooth 5.0/BLE, true Gigabit Ethernet, and PoE capability via a separate PoE HAT. 3rd parties can add support directly for their own cameras. Raspberry Pi Zero 2 W. Priced at $15, Raspberry Pi Zero 2 W uses the same Broadcom BCM2710A1 SoC die as the launch version of Raspberry Pi 3, with Arm cores slightly down-clocked to 1GHz, bundled into a single space-saving package alongside 512MB of LPDDR2 SDRAM. Rich I/O peripherals to further expand your projects. 3rd parties can add support directly for their own cameras. The Build HAT fits all Raspberry Pi computers with a 40-pin GPIO header, including with the addition of a ribbon cable or other extension device Raspberry Pi 400. The Raspberry Pi single-board computer has had built-in Bluetooth connectivity since the release of the Raspberry Pi 3 in 2016, allowing you to connect wireless peripherals such as keyboards, game controllers, headsets, and more to your device. Step 3: Launch VirtualBox and create a new virtual machine. New product alert! On first boot, the system will set up openHAB, its tools and settings. Raspberry Pi and 3rd parties can add new features to the camera stack. Our guide to the best Raspberry Pi alternatives now comes to an end. Fill out the fields. Note: For Raspberry Pi 2 and Pi 3, change BCM2708_PERI_BASE to 0x3F000000 for the code to work. With a quad-core 64-bit ARM Cortex-A53 processor clocked at 1GHz and 512MB of SDRAM, Zero 2 is up to five times as fast as the original Raspberry Pi Zero. The exact performance uplift over Zero varies across workloads, but for multi Remember, whatever is in code.py will run when the system is started, and changes saved to code.py will run immediately.. Featuring a quad-core 64-bit processor, 4GB of RAM, wireless networking, dual-display output, and 4K video playback, as well as a 40-pin GPIO header, it's the most powerful and easy-to-use Raspberry Pi computer yet. Hook up your Raspberry Pi to an external display. Connected LEGO Technic devices can easily be controlled in Python, alongside standard Raspberry Pi accessories such as a camera module. Raspberry Pi and 3rd parties can add new features to the camera stack. With a quad-core 64-bit ARM Cortex-A53 processor clocked at 1GHz and 512MB of SDRAM, Zero 2 is up to five times as fast as the original Raspberry Pi Zero. Raspberry Pi 400 Personal Computer Kit. The Raspberry Pi uses a configuration file instead of the BIOS you would expect to find on a conventional PC. Scratch control GPIO (use GPIO number not P1 pin number can support GPIO 28,29,30,31) support IC 23017 8/16/32/64/128 GPIO, IC TMP102 Temp sensor, IC RTC DS1307, IC ADC ADS1015, IC PWM, IC EEPROM 24c32, IC BMP085 Barometric Pressure/Temperature/Altitude Sensor, GPIO input/output, DC motor, Relay, IC 16x16 LED It is much easier to add support for new cameras. Plenty of connectivity provided by dual Micro HDMI, 2- lane MIPI DSI and CSI display and camera ports, 2x USB 2.0, 2x USB 3.0, gigabit Ethernet, 2.4 and 5.0 GHz Wi-Fi, and Bluetooth 5.0. Decent specifications combine with good expandability via USB, Ethernet, and 40-pin GPIO header, all at a cool $25. Raspberry Pi and 3rd parties can fix bugs and problems in the camera stack. At its heart is the RP2040 microcontroller, built on TSMCs 40nm low-power process, and incorporating two 133MHz Arm Cortex-M0+ cores, 264kB of on-chip SRAM, and our unique programmable I/O subsystem. N.B. Now click the Load button. On first boot, the system will set up openHAB, its tools and settings. The Build HAT fits all Raspberry Pi computers with a 40-pin GPIO header, including with the addition of a ribbon cable or other extension device Raspberry Pi 400. Exploring Raspberry Pi first covers the basics of the hardware platform, recommended accessories, software, embedded Linux systems, and Linux programming techniques. 5.3 USB The Pi4B has 2x USB2 and 2x USB3 type-A sockets. See Raspberry Pi HDMI documentation for the available options to do this. At its heart is the RP2040 microcontroller, built on TSMCs 40nm low-power process, and incorporating two 133MHz Arm Cortex-M0+ cores, 264kB of on-chip SRAM, and our unique programmable I/O subsystem. Wireless LAN is built in to a shielded enclosure with improved RF compliance, giving you more flexibility when designing with Raspberry Pi Zero 2 W. Next, youll need to download the image file of Raspberry Pi Desktop from the Raspberry Pi Foundations site. The Raspberry Pi TV HAT requires very minor assembly and no soldering.. First fit the 40-pin header on top of your Raspberry Pis existing GPIO header: Then take the HAT and fit either 3 spacers and screws for using with the Raspberry Pi Zero, or 2 spacers and screws for a Model B:. Raspberry Pi 4 B+ (RP4) is the lasted model developed by the company, which has all the required latest wired and wireless communications systems used in most of the smart projects. If you have been running existing fbcp driver, make sure to remove that e.g. Decent specifications combine with good expandability via USB, Ethernet, and 40-pin GPIO header, all at a cool $25. After a mapping was decided upon, connectors were soldered and crimped to connect the various peripherals to the Raspberry Pi. The system configuration parameters, which would traditionally be edited and stored using a BIOS, are stored instead in an optional text file named config.txt.This is read by the GPU before the ARM CPU and Linux are initialised. These connectors are backwards compatible with legacy Raspberry Pi boards, and support all of the available Raspberry Pi camera and display peripherals. Hook up your Raspberry Pi to an external display. If you dont have a model of Raspberry Pi that has Bluetooth built-in, you can use a third-party USB adapter to add support. Featuring a quad-core 64-bit processor, 4GB of RAM, wireless networking, dual-display output, and 4K video playback, as well as a 40-pin GPIO header, it's the most powerful and easy-to-use Raspberry Pi computer yet. The Raspberry Pi TV HAT requires very minor assembly and no soldering.. First fit the 40-pin header on top of your Raspberry Pis existing GPIO header: Then take the HAT and fit either 3 spacers and screws for using with the Raspberry Pi Zero, or 2 spacers and screws for a Model B:.