Re:Don’t use 7-segment displays (2011) [pdf]
by parsecs on Sunday March 07, 2021 @02:33AM
(#26374013)
I've been looking into those Avago/Broadcom dot matrix displays recently. I don't think it'd be too hard to recreate something similar with tiny SMD LEDs on a PCB and a slightly intelligent driver board, for much cheaper. Would there be a market for something like that?
[ Parent
| on HN ]
Re:Don’t use 7-segment displays (2011) [pdf]
by exmadscientist on Sunday March 07, 2021 @02:48AM
(#26374069)
Only if you can get them listed at Digi-Key/Mouser/etc. Even if it's under a "maker" brand like Adafruit, Sparkfun, etc. Anyone who can replacement TIL311 and friends displays in there, and advertise them, will sell quite a few.
They're not hard to make, but they're the sort of thing that no one really wants to make in-house, since they're a means to an end rather than an end in themselves. Great thing to sell, though!
It has been done a few times, but I doubt there would be any kind of market for it. https://hackaday.io/project/85515-redotmatrix
Electroluminescent glass panels on the other hand... https://www.youtube.com/watch?v=Z2o_Sp2-aBo
Re:Don’t use 7-segment displays (2011) [pdf]
by zokier on Sunday March 07, 2021 @09:52AM
(#26376244)
That redot project seems like perfect candidate for a kickstarter
In grad school I taught a electronics lab class where the students would burn through a bunch of HDSP-0772 every semester. I thought about coming up with a replacement, but at the time you could still get them for a somewhat reasonable price (like $10 or $20?).
At today's price of $50 it might be cost effective to do as you say, but I imagine there's not a huge market.