Author: Matt

Today Raspberry Pi have announced the Pi Pico W, Pico H and Pi Pico WH. These compliment the original Pi Pico. You can buy a Pi Pico W and Pi Pico H immediately with the Pi Pico WH being made available in August. The Pi Pico W adds WiFi and Bluetooth Low-energy. The H variant adds a 3-pin debug connector and pre-soldered headers. The Pi Pico WH adds WiFi, Bluetooth LE, 3-pin debug socket as well as the pre-soldered headers. Pi Pico W Specification: RP2040 microcontroller chip designed by Raspberry Pi in the United KingdomDual-core Arm Cortex M0+ processor, flexible clock…

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If you run Kodi on a RetroPie system you can add Kodi to the RetroPie menu as if it is a game system. This guide assumes you already have Kodi installed on your RetroPie system where it appears as an item under the “Ports” system. To continue you will need to use the command line. You can get to the command line either Pressing F4 if you have a keyboard attached directly to your systemUsing SSH to connect to the RetroPie system from another computer Step 1 – Copy es_systems.cfg file Firstly we need to copy the default es_systems.cfg file:…

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This guide explains how to disable auto-login on Raspberry Pi OS. By default when you install the Raspberry Pi OS with the desktop it will auto-login when you power-up the Pi. This is really convenient for lots of projects as it gets you straight to the desktop. If you are using your Pi as a desktop computer this starts to become more of a security/privacy risk. If someone breaks into my house and steals my Pi 400 they could power it up elsewhere and potentially run my browser full of saved passwords and bookmarks. Or gain access to any files…

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Setting up Pi cloud storage with MEGA is really useful as it means your project files can be safely backed up automatically. You also have the benefit of accessing those files from other devices via a web browser. This can speed up swapping data between devices and reduce the messing about with USB drives and network shares. MEGA is a popular cloud storage provider and they properly support Linux, Windows and MacOS, unlike some of their competitors. Their Desktop app “MEGAsync” works great on the Pi and is really easy to setup. Step 1: Sign-up to MEGA To use the…

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If you are interested in monitoring the RetroPie temperature you can add a custom option to your RetroPie menu. This will display the RetroPie temperature on the screen for a predefined number of seconds. You will need to have a keyboard attached to your RetroPie system or have SSH access. Step 1: Create RetroPie Temperature Script You’ll need to get to the command line. If you are using a keyboard connected to the Pi then within RetroPie press F4 to enter the command line. If using SSH connect using your preferred client. At the command prompt navigate to the RetroPie…

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Understanding the Pi Pico Pinout is vital to getting the best out of Pi Pico. The Raspberry Pi Pico is a microcontroller board that makes use of the RP2040 chip developed by the designers of the Raspberry Pi. The Pico can accept 0.1″ pin-headers which can be soldered to the board as required. Pi Pico Pinout Many of the pins on the Pi Pico board can provide different features and capabilities. Pi Pico Physical Pin Numbering The diagram below shows the pins on the Pi Pico and how they are numbered: Power Pins The following pins are related to power:…

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The Arduino IDE is a vital tool for flashing Arduino devices. You can install Arduino IDE on Raspberry Pi OS using these easy steps. You could use apt: sudo apt install arduino but this results in the installation of Arduino IDE version 1.6. This is an extremely outdated version which makes it difficult to use or impossible to flash certain devices. So I recommend manually installing the Arduino IDE using the software available from the official Arduino site. I’m assuming you have a working installation of a recent Raspberry Pi OS image. Download Arduino IDE Software Firstly visit the Official…

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Booting a Pi 400 from an SSD is an easy upgrade from the standard SD card. It can give your Pi additional storage capacity, improved reliability as well as massively increased read/write performance. With the price of SSDs dropping to pocket-money prices you can perform this upgrade for less than $40 (£30). I have been running my Pi 400 from a SanDisk Ultra 128GB Class 10 A1 microSD card. That had been working fine but I decided to give an SSD a try to see how easy it would be. The short answer is that is really easy and only…

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As the Raspberry Pi has become more powerful temperature management has become more important. This article aims to provide some easy techniques to monitor the temperature of your Pi. The Pi 4 will start to throttle the performance if the temperature exceeds 80 degrees so it is wise to keep an eye on your system temperature.

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Overclocking the Raspberry Pi 400 is easy and gives you an extra performance boost for free. The Pi 400 has been designed to be used without any active cooling. This has been achieved with careful PCB design and a massive heat-sink. Not only does this allow the Pi 400 to run at 1.8GHz out the box but it also allows for some easy overclocking. In a Pi Foundation blog post Simon Martin stated, We’ve solved the cooling challenge so users don’t have to give this any thought. Raspberry Pi 400 contains a heat spreader that dissipates the heat across the…

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The Raspberry Pi 400 is the latest product to be released by the Raspberry Pi Foundation. The 400 is a compact keyboard with a custom Pi 4 PCB inside. This gives you a compact quad-core computer with all the connectors on the rear edge. Plug in a monitor, mouse and power cable and you have a desktop computer with GPIO pins. The device I got to play with was supplied in a plain white carton, with a mouse, USB-C power supply, microSD card, HDMI cable and a copy of “The Official Raspberry Pi Beginner’s Guide” book. I expect the retail…

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CrowPi2 is a new product that has been launched by Elecrow on KickStarter. It is a laptop-style shell that includes a huge selection of pre-connected sensors, switches and displays. As with the original CrowPi the idea behind it is that you can easily create and test projects without needing to worry about lots of wiring. http://kck.st/3ftWitM CrowPi2 Hardware The hardware provides a number of features : Laptop-style enclosure11.6 inch IPS Full-HD screenWireless keyboard & mouse2 megapixel camera and microphone22 built-in sensors and modulesStereo Speakers3.5mm headphone jackChoice of 5v or 12v power inputInternal tray for storageSmall breadboard It’s chunkier than a…

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Setting up a Raspberry Pi VPN connection is easy. Once subscribed to a VPN service you can access the internet using it and protect your privacy. A VPN (Virtual Private Network) creates an encrypted tunnel between your computer and a remote server. All your internet traffic is routed through the tunnel and appears to the other end to be using the IP address of the VPN server. This hides your normal IP address which in turn hides your identity and location. You can find free VPN services out there but a legitimate service only costs £35 a year and is…

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The Pi Zero has no Ethernet port. If your project requires Ethernet you can add it using either an Ethernet module or a USB to Ethernet adapter. At this point someone is going to question why you would want to add Ethernet to a Pi Zero. Why not just use a standard Pi which already includes the port? I guess the answer is that there are some projects where using a Pi Zero is desirable due to power consumption or size considerations but you also need the functionality of Ethernet devices. I’ve got a project in mind which I will…

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Ntablet is a new Kickstarter project from a team of engineers based in Canada. It aims to provide a Linux based device that can be used by product developers or hobbyists to create bespoke systems. There is no Raspberry Pi involved but could form part of a system that does include one. It also overlaps with various Pi related technologies so may be of interest to Pi owners. https://www.kickstarter.com/projects/ntablet/ntablet-world-1st-commercial-open-source-tablet/ The project team sent me one to take a look at. Here are my honest thoughts. Specifications The device has the following specifications : Although it has an SD card slot…

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This post shows how I added an OLED status screen to my Raspberry Pi based Pi-Hole system. Pi-Hole is a network wide advert blocker that you can run on a Raspberry Pi. It runs well on all Pi models and is an ideal project for older hardware. You can read more about it on the official Pi-Hole site. Having setup Pi-Hole on a Raspberry Pi B+ I wanted a way to add a display so I could quickly check it was working. So I added a cheap 0.96″ OLED display and a momentary switch. The switch allows the display to…

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Back in 2017 I reviewed a steel case from KKSB for the Pi 2 & 3. Two years later they have created a revised design for the Raspberry Pi 4. They sent me one to take a look at. The Case The kit of parts includes : Outer shell (steel)Base plate (aluminium)4 screws4 adhesive rubber feet This revised case is a perfect fit for the Pi 4 with its rearranged Ethernet/USB sockets and twin HDMI socket arrangement. The outer shell is made of powder-coated steel with the base plate being made of anodised aluminium. As with most metal cases they…

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Today saw the launch of the Raspberry Pi 4. Changes over the previous model include more memory options, a faster quad-core CPU, support for dual displays at up to 4K resolution, Gigabit Ethernet, USB3.0, wireless LAN, Bluetooth 5.0, and USB-C power. https://www.youtube.com/watch?v=sajBySPeYH0 Specifications 1.5GHz 64-bit quad-core ARM Cortex-A72 CPU ( ARM v8, BCM2837)1GB, 2GB or 4GB RAM (LPDDR4)On-board wireless LAN – dual-band 802.11 b/g/n/acOn-board Bluetooth 5.0, low-energy (BLE)2x USB 3.0 ports, 2x USB 2.0 portsGigabit ethernetPower-over-Ethernet  (requires additional HAT)40-pin GPIO header2 micro-HDMI ports (up to 4Kp60 supported)H.265 (4Kp60 decode)H.264 (1080p60 decode, 1080p30 encode)OpenGL ES, 3.0 graphicsDSI display port, CSI camera portCombined 3.5mm analog audio and composite…

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AliExpress sell a 6 button board PCB for the Raspberry Pi that fits the classic DMG-01 Nintendo Gameboy case. It can form the basis of a DIY Gameboy project using a Raspberry Pi Zero. It’s cheap but is sold with no technical support, information or assembly instructions. Here is some information which you might find useful before deciding to buy one or if you have purchased one already.

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Additional sound capabilities can be added to a Raspberry Pi using a USB audio device. This can improve the sound quality as well as adding a microphone input. These devices can also be used to add audio capabilities to the Pi Zero which doesn’t include an audio jack as found on the larger Pi models. The post will explain how to configure a USB sound device on the Raspberry Pi.

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Setting up SSH keys on a Raspberry Pi is relatively easy and can make connecting to one over a network more convenient. In this tutorial we’ll explain how to create and configure SSH keys so you can connect to a Pi remotely without needing to enter a password. To help make the process clearer I’ll assume you’ve got two machines. One is the remote machine you want to access. This is the Raspberry Pi and we’ll call this [A]. The other machine is the computer you will use in the future to access the Pi. We’ll call this [B]. Each…

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The Raspberry Pi Foundation has just announced the release of a new Compute Module. The new device is called the CM3+ and follows the CM3 released in January 2017. The Compute Module is a compact and cost-effective way to produce Pi hardware based products.

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