Raspberry Pi category

Raspberry Pi Clock with Temperature

A Raspberry Pi clock with outside temperature display using OpenWeatherMap and inside temperature display using a MCP9808 sensor. By Jeremiah Mattison

This project is for a building a digital clock that includes temperature display. It uses OpenWeatherMap to retrieve outside temperature information and a MCP9808 sensor for inside temperature.

Raspberry Pi Clock with Temperature – [Link]

Raspberry Pi Zero WH – No Soldering Raspberry Pi Zero W

The Raspberry Pi Zero W is a single board computer and a great way to get started with learning coding and hardware projects. The “W” in the Raspberry Pi Zero signifies the board contains inbuilt Wifi and Bluetooth. Costing around $10, the Raspberry Pi Zero W is a great board to kickstart a lot of hardware projects and has found love in the maker’s community.

The Raspberry Pi Zero W is great but doesn’t feature any header pins which could be challenging for beginners, people that want to do a quick prototyping and the ones that don’t want to void the Pi Zero W warranty. Introducing the Raspberry Pi Zero WH, the Raspberry Pi Zero W with added 40 GPIO (General Purpose Input Output) male header pins.

Raspberry Pi Zero WH

The Raspberry Pi Foundation has removed the compulsory soldering barrier that comes with the Raspberry Pi Zero W by adding a pre-soldered 40-pin header to the Zero W. This Pi Zero WH is perfect for those who don’t own a soldering iron, hate soldering or who wants the extra soldering legwork done for them at a price of course.

The following are some of the specifications for the Pi Zero WH:

  • SoC – BCM2835 (same as Pi 1) but up-clocked to 1GHz, so 40% faster
  • RAM – 512MB RAM
  • Storage – microSD Slot
  • Connectivity – Bluetooth 4.1 (Bluetooth Low Energy) and 802.11 b/g/n WiFi
  • USB – 1x Micro USB OTG port, 1x Micro USB port for Power.
  • Camera – CSI Camera Connector
  • Video – Mini HDMI port and composite Video
  • Power Supply – 5V DC Volts via micro USB port.
  • Dimensions – 65mm x 30mm x 5mm.

The Raspberry Pi Foundation’s community manager Ben Nuttall, wrote: “You can live boot the Raspberry Pi Desktop OS from a USB stick, use Linux PCs, or even install [the Pi OS] on old computers. Then you have really simple access to physical computing without full Raspberry Pi setups, and with no SD cards to configure.”

The Raspberry Pi Zero WH is available for purchase online and comes with a price tag of about £13.25 ($18.25), a difference of about $5 over the Pi Zero W. The Raspberry Pi Zero WH can be purchase from pimoroni and other Raspberry Pi retailers. More information can be found at the Raspberry Pi Blog announcement.

Overclocking Raspberry Pi

How to overclock the Raspberry Pi device? Don’t matter if you are looking for the way to overclock the Raspberry Pi 3 or overclock the Raspberry Pi 2 – the algorithm stays the same.

The only thing should be taken into consideration is that the Raspberry Pi 3 has significantly improved processor performance compared to previous models. Through various techniques such as overclocking and overvoltage, we can get even more power out of the Raspberry Pi 3. While Raspberry Pi 2 device will always be a little bit behind on performance due to basic technical peculiarities.

Overclocking, basically, is the way to boost Raspberry Pi hardware performance by tuning up several device parameters. For that, additional hardware and special skills are required. Also, you’ll need to implement several tests to make sure of changes to take effect as well as keep your device from damage.

As you have already understood, the overclocking of your Raspberry Pi 3 exercises some risks. What are they and how to avoid them, read in this article on the link.

IOT-GATE-RPi: mini-PC/gateway build on the RPi CM3

CompuLab introduces IOT-GATE-RPi – a miniature, low cost industrial IoT computer, built around the Raspberry Pi 3 Compute Module.

Targeting IoT connectivity and control applications, IOT-GATE-RPi features a variety of wireless and wired interfaces. All-metal, rugged housing and support for wide temperature range of -40C to 80C make IOT-GATE-RPi a versatile solution for installation in harsh environments. IOT-GATE-RPi has been designed for full compatibility with Raspberry Pi software and runs standard Raspberry Pi OS images.

Thanks to its rich software eco-system, Raspberry Pi is widely used by IoT system designers for software development and quick proof-of-concept. IOT-GATE-RPi turns Raspberry Pi into an industrial-grade IoT computer, allowing fast and seamless transition from a Raspberry Pi proto-type to mass-production deployment.

Designed for IoT applications

IOT-GATE-RPi expands standard Raspberry Pi functionality with additional features necessary for typical industrial IoT systems:

  • Built-in 3G/LTE cellular modem with on-board SIM socket
  • Dual Ethernet ports
  • Up-to 64GB of on-board, soldered eMMC storage
  • RTC with battery back-up
  • RS485 and CAN bus interfaces

IOT-GATE-RPi functionality can be further extended with Raspberry Pi HAT expansion boards.

[via]

IOT-GATE-RPi: mini-PC/gateway build on the RPi CM3 – [Link]

Raspberry Pi Zero Docking Hub

Add more connectivity to your Raspberry Pi Zero with this docking hub. Available on kickstarter for 16 USD and has 34 days to go.

The Pi Zero USB Docking Hub is a stackable USB Hub that comes with 5 x USB 2.0 data and charging ports, a micro USB port for power input, an RJ45 port for Ethernet, and a 3.5mm audio input/output jack. Installation would take only seconds. Just snap your Pi Zero onto the top of the docking hub station, the four pogo pins on the hub station will connect to the signal pads on your Pi. There is no soldering required!

Raspberry Pi Zero Docking Hub – [Link]

Raspberry Pi Internet Weather Station

The RPi Internet Weather Station project displays the weather information such as temperature, humidity and successive weather forecast.

The 4DPi-35-II is a 3.5″ 480×320 Primary Display for the Raspberry Pi, which plugs directly on top of a Raspberry Pi and displays the primary output which is normally sent to the HDMI or Composite output. It features an integrated Resistive Touch panel, enabling the 4DPi-35-II to function with the Raspberry Pi without the need for a mouse.

Raspberry Pi Internet Weather Station – [Link]

Google offers AI vision kit for Raspberry Pi owners

Google’s Vision Kit lets you build your own computer-vision system for $45 along with your own Raspberry Pi.

The company has now launched the AIY (AI yourself) Vision Kit that lets you turn Raspberry Pi equipment into an image-recognition device. The kit is powered by Google’s TensorFlow machine-learning models and will soon gain an accompanying Android app for controlling the device.

According to Google, Vision Kit features “on-device neural network acceleration”, allowing a Raspberry Pi-based box to do computer vision without processing in the cloud. The AIY Voice Kit relies on the cloud for natural-language processing.

Google offers AI vision kit for Raspberry Pi owners – [Link]

7 Undiscovered Add-On Boards For Your Raspberry Pi

averagemanvsraspberrypi.com has a list of 7 add-on boards that you may not be aware of. They write:

It’s been a couple of weeks since I returned to the Pi, and I’m already seeing people using the same old default add-on boards all over the internet. Don’t get me wrong – they’re popular because they’re good quality, useful and affordable – but they don’t excite me.

What does excite me is when I find small batches of weird little wonders lurking in the dark, dingy alleyways of the internet. Odd little boards from different places, in different colours with different features.

They’re not mass-market, they’re not easy to find, and they’re usually not as cheap as mainstream options – but they are different – and that makes them interesting.

7 Undiscovered Add-On Boards For Your Raspberry Pi – [Link]

Pi/104 – Pi Compute carrier board

Pi/104 is a Pi Compute carrier board in PC/104 format with industrial durability.

The Pi Compute Module is a powerful tool for custom electronics projects. But if your project requires industrial grade specifications, you’re currently out-of-luck. This is where Pi/104 comes in – with a wide temperature rating and a power supply that encompasses common industrial cabinet voltages. Pi/104 doesn’t try to do too much out of the box. Instead, it relies on an industry standard form factor for accessories, which allows people to build custom stacks to meet their goals in a cost effective way. It also means the base board is cheaper, bringing an industry-ready board to the hobby market.

Features

  • Based on the PC/104 format, compact, sturdy, and stackable.
  • Uses the “OneBank” connector leaving more PCB area and cheaper than a full PCIe/104 connector.
  • “OneBank” has 5/3.3 V and two USB channels allowing you to use USB-powered peripherals in the stack such as cellular modems, Wi-Fi cards, USB to SATA, FPGA, and serial connectors. (Note: PCIe pins in OneBank connector are not used.)
  • Flexible power. Board can be powered through the wire terminals (8 to 35 volts), OneBank connector (5 V and 3.3 V), or through the USB OTG connector.
  • USB OTG connector supports full range of functionality including OTG and USB boot.
  • Display flexibility with either HDMI or DSI support as well as a camera through the CSI port
  • IDE-style connectors for GPIO, making I/O ribbon cables easy to find. Connector closest to module is pin compatible with Raspberry Pi and has been successfully tested with several HATs. The other connector carries the rest of the compute module pins and some extra grounds.
  • Recessed Ethernet connector allows for a full size, standard ethernet cable to be used even in stack configuration.
  • On-board microSD card slot allows for use of Pi Compute 3 Lite modules.

Specifications

  • 2 x USB A
  • 1 x microUSB OTG
  • 1 x HDMI
  • 1 x 10/100 Ethernet
  • 1 x microSD slot (CM3L only)
  • 1 x CSI
  • 1 x DSI
  • 59 x GPIO in two IDE-style connectors
  • OneBank stacakble connector with 2 USB and 5/3.3 V
  • Wide power supply, 8-36 V
  • Temperature spec with Pi Compute Module, -25° C to 85° C
  • Temperature spec without Pi Compute Module, -40° C to 85° C

Node-RED with Raspberry Pi Camera

In this project we’re going to take photos with Node-RED using the Raspberry Pi Camera Module V2. We’re using this application to monitor our 3D printer. You can edit the flow and the template to use the camera in your own projects whether you want to monitor your lab, door or 3D printer.

Node-RED with Raspberry Pi Camera – [Link]