Baseline CO2 Levels

The best resource for tech and electronics projects, tutorials and reviews

Latest Posts

TRMNL X: A Larger Smart E-Ink Display That’s Built to Last

Michael Klements - July 27, 2026 0

Last year I built my own version of the TRMNL from scratch, and it quickly became one of my most popular projects. Rather than...

I Built a Smart Ventilation System for My Workshop

Michael Klements - July 14, 2026 1

Every evening I spend a few hours in my workshop filming videos, designing parts, editing, or just working on projects. It’s only about three...

I Rebuilt My 3D Printed Lab Rax Homelab… in Wood

Michael Klements - June 29, 2026 2

This entire homelab rack took less time to cut than a set of these Lab Rax corner pieces take to 3D print. Today, we’re...

Adjusting Cabinet Hinges

Michael Klements - May 23, 2016 10

If your cabinets have adjustable concealed hinges, you may need to adjust them every now and again to keep the doors in line and...

Mini Raspberry Pi Server With Built In UPS

Michael Klements - June 30, 2021 95

Today we're going to be building a mini Raspberry Pi server with a built-in UPS and OLED stats display. A Raspberry Pi makes a...

Introducing Lab Rax: A 3D Printable & Modular 10″ Rack System

Michael Klements - April 7, 2025 51

Today, I’m excited to introduce Lab Rax, my latest 3D-printable project—a fully modular and customizable 10-inch server rack system for homelab enthusiasts. Whether you're...