raatools/

Articles

Longer write-ups on the subjects the calculators cover — how the numbers are derived, what the standards actually say, and what happens when you build the thing.

Build a Portable Raspberry Pi Server

Build a self-contained portable Raspberry Pi server with battery power, SSD storage, and WiFi hotspot. Perfect for off-grid computing, field work, and travel.

10 min read raspberry-pi, off-grid, hardware

Power Budget for Off-Grid Raspberry Pi Projects

Plan your off-grid Raspberry Pi power system. Calculate total consumption, size batteries and solar panels, and choose the right voltage regulators.

10 min read raspberry-pi, off-grid, hardware

Solar Powered Home Server — Run 24/7 Off-Grid

Build a solar-powered Raspberry Pi home server that runs 24/7 off-grid. Covers solar panel sizing, battery selection, charge controllers, and power monitoring.

12 min read raspberry-pi, off-grid, hardware

WireGuard VPN on Raspberry Pi — Secure Remote Access

Set up WireGuard VPN on Raspberry Pi for secure remote access to your homelab. Covers both manual install and Docker, with client configs for phone and laptop.

10 min read raspberry-pi, networking, self-hosting