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    Turn Your Raspberry Pi 4 Into a Portable Tablet with the RasPad 3 for $219 (includes 10.1" touch screen, accelerometer and 5 hour battery)

    Danie van der Merwe · / gadgeteerza-tech-blog · Thursday, 18 November - 17:37

This is quite a nice kit to have and includes a self-contained Raspberry Pi 4 (Pi itself is not included) with a touch screen and battery power for around 5 hours. The battery is rechargeable, and all ports are accessible from outside, apart from the GPIO pins. The video shows how it all fits together and works.


#technology #raspberrypi #tablet #RasPad

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    Building a Raspberry Pi 4 In-Dash Car Computer with OpenAuto Pro (Video)

    Danie van der Merwe · / gadgeteerza-tech-blog · Thursday, 21 October - 13:37

OK this does involve some physical dash work but for older cars with either very basic or no head units, this could be worth thinking about. I must say I'm really impressed with all the functionality and integration with ODB2 sensors, Apple CarPlay, and Android Auto. The problem with newer cars is there is often a lot of car functionality built into the head unit, e.g. climate control, etc.


#technology #DIY #cars #raspberrypi #openauto

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    FreedomBox is a private server for non-experts: it lets you install and configure server applications at home with only a few clicks

    Danie van der Merwe · / gadgeteerza-tech-blog · Thursday, 14 October - 20:35 · 1 minute

Launched in 2010 by Prof. Eben Moglen, FreedomBox is a global project to empower regular people to reassert control over the infrastructure of the internet. FreedomBox empowers its users to avoid the data mining, censorship and surveillance by centralized silos that characterize the web of today. It makes web servers personal, affordable and manageable, so that a user can host necessary web services at home on a device they own, powered by free software they can trust.

FreedomBox provides file sharing like Dropbox. Your data stays with you. Your family and friends also benefit. FreedomBox provides a VPN server. Connect securely to your devices at home from outside. Protect your browsing session when on untrusted networks. FreedomBox provides a secure, decentralized replacement for WhatsApp. Do group chats and audio/video calls from any device.

FreedomBox can host a blog or a wiki. Host your personal website right from your home. Synchronize your calendar and contacts to FreedomBox. Share media and take backups from all devices on your home network. FreedomBox can be your Network Attached Storage (NAS).

You have options to buy it as a cloud hosted service, or you can buy a hardware device and run it at home, or you can 'build' your own on a Raspberry Pi or better computer at home.


#technology #selfhosting #freedombox #opensource #raspberrypi

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    CrowPi2 - All in One Raspberry Pi Laptop and STEM Learning Platform Featuring 22 kinds of common sensors and modules, and independently developed software

    Danie van der Merwe · / gadgeteerza-tech-blog · Monday, 6 September - 13:31

This is an incredibly compact package that functions as a working laptop, and underneath the removable Bluetooth keyboard are 22+ types of sensors and modules that can be used in combination with the software to learning about programming, DIY electronics, gaming, face and voice recognition, AI, RFID, etc.

With a Raspberry Pi 4 and up to 8GB of RAM, you can do quite a bit with this device. It's the ideal type of gift for a young child who may be into electronics, programming, etc. Back in my day, I was really excited to get an electronic kit, and back then there were no computers to go with it.


#technology #raspberrypi #electronics #DIY #learning

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    Radioberry - a HF Transceiver Radio PiHat for the Raspberry Pi

    Danie van der Merwe · / gadgeteerza-tech-blog · Wednesday, 11 August - 14:23

The Radioberry is actual a radio card (Raspberry Pi 4 Hat) installed with the latest hardware V.Beta5, which can be plugged into a Raspberry Pi 4, forming a Software Defined Radio (SDR). RPI4 is the target for running the Radioberry.

The radio card uses an Analogue Devices AD9866, which is a 12-bit broadband modem mixed signal front end that has been repurposed as a direct down conversion (DDC) and direct up conversion (DUC) SDR transceiver covering 0-30 MHz. So this covers the HF frequency range (not VHF/UHF out of the box), and can transmit up to 100 mW power.

Watch at

#technology #SDR #amateurradio #hamradio #raspberrypi

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    The sBITX is a fully open source hackable self-built (and repairable) SDR Ham Radio transceiver based on a Raspberry Pi

    Danie van der Merwe · / gadgeteerza-tech-blog · Friday, 6 August - 14:14

Cheap, easy to use SDR dongles are an immensely powerful tool for learning about radio technology. However, building your own SDR is not something too many hackers are confident to tackle. [Ashhar Farhan, VU2ESE] hopes to change this with the sBITX, a hackable HF SDR transceiver designed around the Raspberry Pi.

This project is not for the faint of heart, but the downstream benefits are amazing: It can be easily extended through software updates, you can hack the software to experiment on your own, parts are all replaceable, and it potentially costs under $100 to build vs paying $2,000 or more for a commercial radio. The downside is the PDF does explain it better, but there is still no easy 1-2-3 step guide available, but I'm sure someone will come to the fore to also produce that.

Ashhar has also produced an open source buildable antenna tester.


#technology #hardware #raspberrypi #hamradio #amateurradio

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    How to set up your own free VPN server at home for whilst travelling, especially at hotels or public Wi-Fi spots

    Danie van der Merwe · / gadgeteerza-tech-blog · Tuesday, 3 August - 12:36

This is not the sort of VPN for circumventing geoblocking of streaming media servers. It is meant for if you are using public Wi-Fi from hotels, airports, or other such spots where you want to access banking or other services and ensure your data is not being snooped on in the vicinity.

Such a VPN service can be set up at home using a spare computer or a Raspberry Pi, and the only other thing you need is have a service like DuckDNS running to ensure a constant web address is available. It can all be run using free and open source software.


#technology #opensource #linux #raspberrypi #VPN

  • Set up a VPN server on your Linux PC

    Have you been connected to an untrusted network such as a hotel or café WiFi and need to securely browse the internet from your smartphone or laptop? By using a virtual private network (VPN), you can access that untrusted network anonymously and as safely as if you were on a private network. VPN is an amazing tool for safeguarding private data. By using a VPN, you can connect to a private network on the internet while maintaining anonymity.

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    Analogue camera goes digital with a Raspberry Pi Zero and camera sensor

    Danie van der Merwe · / gadgeteerza-tech-blog · Sunday, 18 July, 2021 - 08:51

Befinitiv’s latest project handles this conversion by swapping in a Raspberry Pi Zero where the film cartridge would otherwise be inserted into the camera. The Pi is attached to a 3D-printed case which mimics the shape of the film, and also houses a Pi camera right in front of the location where the film would be exposed. By removing the Pi camera’s lens, this new setup is able to take advantage of the analogue camera’s optics instead and is able to capture images of relatively decent quality.

There are some perks of using this setup as well, namely that video can be broadcast to this phone over a wireless connection to a computer via the Raspberry Pi. Would be nice to be able to add a slightly larger and higher resolution camera sensor.


#technology #photography #raspberrypi #retro #vintage