EngorioLumaTrack Precision Digital Lux Meter
About this project
Build a handheld precision lux meter using the TSL2561 digital light sensor — the same class of sensor used in professional photography light meters and building illuminance audits. Unlike a simple LDR that gives a rough analog reading, the TSL2561 contains two separate photodiodes (visible+infrared, and infrared-only) and does the sensor math internally, returning a calibrated lux value over I2C that's accurate across an enormous 0.1 to 40,000 lux range — from a dark room to direct sunlight — without any manual calibration. A 16x2 LCD shows the live lux reading plus a plain-language brightness category (Dark / Dim / Indoor / Bright / Sunlight). The WOW moment: point it at a phone screen, a tube light, and a window, and watch genuinely accurate numbers that match a real lux meter app. Build time: 2 hours. Fully offline.
What you get
- Complete, commented source code
- Full components list with quantities
- Pin-by-pin wiring guide and connection table
- Step-by-step upload and testing guide
- Project report (.docx, IEEE style)
- Presentation slides (.pptx)
