What Is an Infrared Touch Screen?
The light-grid mechanism, interpolation, sunlight behaviour and where IR beats every other touch technology.
Engineering blog
Working notes from the YCL Touch engineering and applications team: how infrared sensing behaves, how retrofits succeed or fail, and how to specify without wasting a sample cycle.
The light-grid mechanism, interpolation, sunlight behaviour and where IR beats every other touch technology.
An even-handed ledger — size, cost, ambient light, bezel height and maintenance — with selection advice.
Parts, assembly order, alignment, calibration and the troubleshooting table nobody publishes.
How a 0.155 mm film turns a window into a touch screen — glass limits, lamination and failure modes.
Board size by room depth, projector pairing, mounting heights and teacher workflow, in checklist form.
How overlays talk to Windows, Android, Linux and macOS — and why "no driver needed" is almost true.
Profile splicing, corner accuracy, multi-segment calibration and wall flatness at architectural scale.
Mounting, ventilation, bezel sealing and service access — the builder's side of open-frame touch.
Emitter arrays, scanning, interpolation firmware and USB HID output — and what fails in the field.
Drawing confirmation, sample, pilot and production — where custom touch frame lead time actually goes.