Best of Raspberry Pi — April 2025

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   Article

   Jeff Geerling·1y

   Raspberry Pi cluster spotted inside $6k audio processor

   The Orban Optimod 5000-series audio processors, which cost between $6,000-15,000, include a 3-node Raspberry Pi cluster. Each node in the cluster serves a different function: one for remote control and firmware updates, another for multi-stream audio processing, and an optional third for watermarking audio streams. This setup is popular among broadcasters for its power efficiency and long-term vendor support using Pi CM4/CM5 modules.

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   Article

   Community Picks·52w

   Self-Hosting A Cluster On Old Phones

   Old smartphones can be repurposed as computing clusters, utilizing their computing power to run self-hosted services. To achieve this, a phone with an unlockable bootloader is required to install postmarketOS, a Linux distribution that enables SSH access and the use of Kubernetes. This practice can be more cost-effective and provide robust alternatives compared to using devices like Raspberry Pi. The guide explores detailed steps for setting up such clusters, making use of old or partially damaged phones.

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   Video

   Community Picks·51w

   My New Found Addiction!

   Ardens, a part-time YouTuber, IT intern, and full-time student, discovers an interest in home labbing. He explains how to set up a NAS server using a Raspberry Pi and Open Media Vault to create a personal cloud storage solution. Ardens further explores virtualization using Proxmox to host a music server, enabling an ad-free music streaming experience. Throughout his journey, he aims to build a sophisticated and efficient home lab setup.

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