Infrared hardware

A project log for tv-remote-elderly

Christmas gift for my 90+ granny: TV remote with big buttons and option to turn on/off subtitles

Christoph TackChristoph Tack 12/07/2018 at 11:290 Comments

IR Transmitter


IrDA modules look interesting at first sight because they also include a receiver.  They're expensive however.  At least €4/pce.  They also transmit on a shorter wavelength.

Selected part : Lumex OED-EL-1L2

IR Receiver

The remote of the set top box uses the RCMM protocol.  This protocol uses very short data bursts, many receivers can't cope with that.  Vishay, which has the most extensive range of IR receivers allows to filter by IR-protocol.