Post by thread:[OT]: Need source for little LED displays

I'm looking at a future product that would benefit from a very small LED display, about the size of the ones on old LED calculators. Requirements are 6 to 7 alphanumeric (11- or 13-segment) characters within a space about 1.5" wide (very roughly). The supply of such things seems to have largely dried up over the past ten years or so. Can anyone suggest sources for me to look at? Brian Aase -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Brian Aase <spam_OUTPICLISTTakeThisOuTmitvma.mit.edu> wrote: > I'm looking at a future product that would benefit from a very > small LED display, about the size of the ones on old LED > calculators. Requirements are 6 to 7 alphanumeric (11- or > 13-segment) characters within a space about 1.5" wide (very > roughly). The supply of such things seems to have largely dried up > over the past ten years or so. Can anyone suggest sources for me to > look at? Brian: Take a look at the Agilent HCMS-29xx family. The datasheet is at: http://literature.agilent.com/litweb/pdf/5964-6376E.pdf They're VERY cool. -Andy === Andrew Warren --- .....aiwKILLspam@spam@cypress.com === IPD Systems Engineering, CYSD === Cypress Semiconductor Corporation === === Opinions expressed above do not === necessarily represent those of === Cypress Semiconductor Corporation -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> Take a look at the Agilent HCMS-29xx family. The datasheet is at: > They're VERY cool. But be warned, they're not too cheap and they are still LEDs so they suck a bit of power. Agilent also do the HPDL 2.85mm starburst and Infineon have 3.6mm dot matrix (DLR1414). They look good though. Steve. ====================================================== Steve Baldwin Electronic Product Design TLA Microsystems Ltd Microcontroller Specialists PO Box 15-680, New Lynn http://www.tla.co.nz Auckland, New Zealand ph +64 9 820-2221 email: stevebKILLspamtla.co.nz fax +64 9 820-1929 ====================================================== -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

> Take a look at the Agilent HCMS-29xx family. The datasheet is at: > They're VERY cool. But be warned, they're not too cheap and they are still LEDs so they suck a bit of power. Yes. The power bill is rather shocking. There are a wide variety of these 5x7 dot matrix LED displays available, with internal intelligence ranging from "not much" (shift registers and drivers only - continually supply bits) to "some" (shift registers, drivers, and internal memory - supply bits once (I think this includes the Agilent parts mentioned) to "talk to me in ascii." BG Micro has some dumb ones (ACS1076) and some ascii ones (LEDPD243x) at rather attractive prices... One of the projects I have laid out to do sometime is a PIC-based driver for the HCMS-29xx parts (I happen to have found a bunch dumpster diving.) I figure a PIC should be able to accept rs232 ascii and create a (possibly scrolling) dislpay on an arbitrary number of cascaded LED chips (detected automatically.) Rather like the PICLCD displays now proliferating, only with LEDs instead... BillW -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

Any reason you couldn't use a backlit LCD? -Adam Brian Aase wrote: {Quote hidden}>I'm looking at a future product that would benefit from a >very small LED display, about the size of the ones on >old LED calculators. Requirements are 6 to 7 alphanumeric >(11- or 13-segment) characters within a space about 1.5" >wide (very roughly). The supply of such things seems to >have largely dried up over the past ten years or so. >Can anyone suggest sources for me to look at? > >Brian Aase > >-- >http://www.piclist.com hint: PICList Posts must start with ONE topic: >[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > > > > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email .....listservKILLspam.....mitvma.mit.edu with SET PICList DIGEST in the body

Having absolutly no idea why the original poster (Brian) wanted the LED displays, the following are my guesses: 1) Wants to build some funky 70's retro product. 2) Wants it to glow in the dark without being backlit. 3) Too much EMI noise from the backlit invertor 4) Doesn't know of the existance of LCD's 5) The LED displays are smaller (the glass, not the segments) 6) Repairing an older piece of equiptment 7) School project 8) Wanted to bug all us PICLIST people with such a wierd request 9) Doesn't want dogs (who can't see red) to read what is on the display Any others that I have missed?? "M. Adam Davis" wrote: {Quote hidden}> Any reason you couldn't use a backlit LCD? > > -Adam > > Brian Aase wrote: > > >I'm looking at a future product that would benefit from a > >very small LED display, about the size of the ones on > >old LED calculators. Requirements are 6 to 7 alphanumeric > >(11- or 13-segment) characters within a space about 1.5" > >wide (very roughly). The supply of such things seems to > >have largely dried up over the past ten years or so. > >Can anyone suggest sources for me to look at? > > > >Brian Aase > > > >-- > >http://www.piclist.com hint: PICList Posts must start with ONE topic: > >[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > > > > > > > > > > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email EraseMElistservspam_OUTTakeThisOuTmitvma.mit.edu with SET PICList DIGEST in the body -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listservspam_OUTmitvma.mit.edu with SET PICList DIGEST in the body

10) It is a requirement specified by the customer. Thanks to other list members, I have found that both Agilent and Infineon make these. That's what I needed to know. Thanks to all who helped out. Brian Aase On 25 May 2001, at 20:25, Mark Newland wrote: > Any others that I have missed?? > > "M. Adam Davis" wrote: > > > Any reason you couldn't use a backlit LCD? > > > > -Adam -- http://www.piclist.com hint: To leave the PICList @spam@piclist-unsubscribe-requestKILLspammitvma.mit.edu

5) The LED displays are smaller (the glass, not the segments) That's probably the big one. Any others that I have missed? 10) The LED displays we've been talking about are much higher in contrast than an LCD display, and easier to read at a distance. 11) LCDs in the size mentioned (4-8 digits) are rare and usually "custom." BillW -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.