Research engineer, open-source contributor. Writing about Rust, Nix, and embedded systems.https://prestonperanich.com/https://prestonperanich.com/posts/dotfiles-part-5-tooling-edges/https://prestonperanich.com/posts/dotfiles-part-5-tooling-edges/A Cloudflare CLI with a tunnel state machine, GNU Stow inside Nix, triple-platform service modules, secure credential hashing, declarative ZFS, and dev shell bootstrapping.Thu, 19 Mar 2026 00:00:00 GMTnixtoolinginfrastructurehttps://prestonperanich.com/posts/dotfiles-part-4-network-services/https://prestonperanich.com/posts/dotfiles-part-4-network-services/ProtonVPN with network namespace split tunneling, ad-blocking derived from VLAN topology, DHCP-to-DNS sync, and dynamic WireGuard peer onboarding — all as composable NixOS modules.Sun, 15 Mar 2026 00:00:00 GMTnixnetworkingsecurityinfrastructurehttps://prestonperanich.com/posts/dotfiles-part-3-secrets-fleet/https://prestonperanich.com/posts/dotfiles-part-3-secrets-fleet/How I bootstrap 9 machines with sops-nix, clan-core, and a user module pattern that solves the secrets chicken-and-egg problem — plus service exposure via Caddy and Cloudflare Tunnel.Wed, 11 Mar 2026 00:00:00 GMTnixsecurityinfrastructurehttps://prestonperanich.com/posts/dotfiles-part-2-nixos-router/https://prestonperanich.com/posts/dotfiles-part-2-nixos-router/Building a full home router as composable NixOS modules — typed options, auto-derived nftables rules, VLAN isolation, and a custom Go CLI for Cloudflare DNS sync.Sat, 07 Mar 2026 00:00:00 GMTnixnetworkinginfrastructurehttps://prestonperanich.com/posts/dotfiles-part-1-dendritic-flakes/https://prestonperanich.com/posts/dotfiles-part-1-dendritic-flakes/How I use import-tree, flake-parts, and clan-core to manage NixOS, macOS, and WSL machines from a single flake — without maintaining a central import list.Tue, 03 Mar 2026 00:00:00 GMTnixdotfilesinfrastructurehttps://prestonperanich.com/posts/dc-mini-part-7-developer-ergonomics/https://prestonperanich.com/posts/dc-mini-part-7-developer-ergonomics/Build orchestration with xtask, reproducible toolchains with Nix flakes, and a prelude pattern for managing imports in a complex embedded workspace.Tue, 24 Feb 2026 00:00:00 GMTrustembeddedeegopen-sourcenixdeveloper-experiencehttps://prestonperanich.com/posts/dc-mini-part-6-executors-dfu-neopixel/https://prestonperanich.com/posts/dc-mini-part-6-executors-dfu-neopixel/Interrupt-driven task prioritization with embassy, a watchdog-protected dual-bank bootloader, and driving WS2812 LEDs with DMA — the infrastructure glue of DC Mini.Tue, 17 Feb 2026 00:00:00 GMTrustembeddedeegopen-sourceembassydfuneopixelhttps://prestonperanich.com/posts/dc-mini-part-5-one-protocol-two-transports/https://prestonperanich.com/posts/dc-mini-part-5-one-protocol-two-transports/How DC Mini defines its RPC interface once and serves it identically over USB and BLE — with code generation for Python and Rust clients.Tue, 10 Feb 2026 00:00:00 GMTrustembeddedeegopen-sourcebleusbrpchttps://prestonperanich.com/posts/dc-mini-part-4-event-driven-orchestration/https://prestonperanich.com/posts/dc-mini-part-4-event-driven-orchestration/How DC Mini uses a central event bus and inversion of control to keep async sensor tasks decoupled — and why adding a new sensor is just a match arm.Tue, 03 Feb 2026 00:00:00 GMTrustembeddedeegopen-sourceasyncembassyhttps://prestonperanich.com/posts/dc-mini-part-3-bus-manager/https://prestonperanich.com/posts/dc-mini-part-3-bus-manager/Building a generic bus lifecycle manager in no_std Rust that lazily initializes, reference-counts, and tears down shared peripherals — all without a heap.Tue, 27 Jan 2026 00:00:00 GMTrustembeddedeegopen-sourceno_stdhttps://prestonperanich.com/posts/dc-mini-part-2-typed-resource-bundles/https://prestonperanich.com/posts/dc-mini-part-2-typed-resource-bundles/How DC Mini uses Rust's type system to enforce pin allocation at compile time, preventing an entire class of embedded bugs.Tue, 20 Jan 2026 00:00:00 GMTrustembeddedeegopen-sourceembassyhttps://prestonperanich.com/posts/dc-mini-part-1-firmware-architecture/https://prestonperanich.com/posts/dc-mini-part-1-firmware-architecture/A look at the architecture behind DC Mini — an open-hardware 16-channel EEG wearable built with Rust, embassy-rs, and a three-crate firmware design.Tue, 13 Jan 2026 00:00:00 GMTrustembeddedeegopen-source