Connecting photography concepts with optics: glasses diopter equals 1/focal length, aperture affects depth of field and diffraction, and macro lens design for close focusing.
Gigapixel Panoramas
Creating gigapixel panoramas with Leica SL and vintage R lenses: from Seattle skyline to macro photography of watches and dollar bills, with tips for successful stitching.
DIY Smart Air Purifier with Quality Monitoring using a Raspberry Pi
Build a Raspberry Pi-based air quality monitoring system with gas and dust sensors, plus a DIY air purifier using a box fan and MERV 13 filter.
Some experiments about thermal cameras
Using a FLIR One thermal camera to identify home energy leaks: window drafts, heater inefficiencies, and door gaps. Practical DIY approach to thermal debugging.
Update on the IFTTT Delay API
The IFTTT delay API now supports passing extra POST parameters (Value1, Value2, Value3), enabling more complex automation recipes like delayed blog cross-posting and smart home scene scheduling.