I'm kinda liking this -- using separate pieces. On the plus side, with separate pieces I can control the angle to work=20 best with the stripe-patterned part that this will be looking at. But=20 curious how sensitive it will be to placement tolerances during=20 manufacturing. With a one-piece unit, a variance in how far it is from=20 the stripe-patterned part is already a concern, but I'm wondering how=20 much rotation tolerance it can handle. Any thoughts on that? FWIW, I'm making effectively a nest-type interface for a product, where=20 the outer ring becomes the quadrature encoder control knob. Cheers, -Neil. On 9/28/2016 12:04 AM, stephen.forrest@agilent.com wrote: > Discrete LED & photodiode? > I've used Osram SFH325FA with SFH426-Z as a side-looking reflective opto. > 4mm high and <$1 per pair. (SFH4244-Z is the closest that Digikey have...= ) > > > > > > Stephen > > -----Original Message----- > From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf = Of Neil > Sent: Wednesday, 28 September 2016 10:35 AM > To: Microcontroller discussion list - Public. > Subject: [EE] SMD side-looking reflective opto sensor? > > Well since y'all are bored and missing some action in this group... > > Anyone know of a side-looking relective opto sensor like this ( > http://www.digikey.com/product-search/en?keywords=3Dtcrt1000 ), but SMD? > Shorter (ie: does not stick up as much off the PCB) would be nice also. > This one is 6.1mm high and 4mm would be nice. > > Cheers, > -Neil. > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/cha= nge your membership options at http://mailman.mit.edu/mailman/listinfo/picl= ist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .