Thermal Drones: Sensor Resolution and Legal Limits
Compare thermal drone sensors by native resolution, frame rate and NETD from DJI, Parrot and Teledyne FLIR sheets, then check the Transport Canada rules.
Mini Drones: Registration Weight Thresholds and Wind Limits
Buying a mini drone in Canada? See the 250 g Transport Canada threshold, what counts toward it, and how DJI wind ratings map to real Beaufort wind speeds.
Short Throw Projectors: The Distance Maths and Where They Beat Standard
Work out how far a short throw projector sits from the wall with one formula, compare four published throw ratios, and see the drawbacks each spec sheet buries.
Mini Projectors: Real Lumens vs Marketing Lumens
Judge a mini projector by ISO 21118 or ANSI lumens, not LED lumens or lux. See what Epson forced sellers to correct and four compact models with real ratings.
Commercial Dehumidifiers: Pints Per Day and Duty Cycle
A commercial grade dehumidifier carries two pint ratings, AHAM and saturation. Compare real specs, the temperature floor and the circuit draw before you buy.
Battery Operated Heaters: Why Most Do Not Work as Advertised
A battery operated heater cannot warm a room, and the watt-hour math shows why. Compare real power station run times and what actually works off-grid.