7-segment monochrome LCD-s, like in calculators - Page 1
Forum section: electronics / beginners

author: ivoras
author_rank: Contributor
timestamp: February 07, 2016, 08:24:32 pm
content: Hi,I've been searching on eBay, Aliexpress and similar sites and I can't find a monochrome, unlit 7-segment LCD like those used in old pocket calculators, etc., for a hobby project. My expectation is that those should be super-cheap and super-simple to manufacture, so I either don't know where to search or how to find those.Ideally, I'd want something simple, just the digits (and preferrably only 4 of them).Any ideas?

author: edavid
author_rank: Super Contributor
timestamp: February 07, 2016, 08:32:57 pm
content: I'm not sure why you're having a problem, unless it's the shipping to Croatia.How about these?http://www.ebay.com/itm/5Pcs-7-SEGMENT-LCD-DISPLAY-4-DIGIT-34-PIN-W-MINUS-SIGN-ON-THE-LCD-DISPLAY-/281668593490

author: rdl
author_rank: Super Contributor
timestamp: February 07, 2016, 09:15:43 pm
content: They're often called "numeric LCD displays", and they're not as popular as they once were. You could try searching that on ebay. Here is what Mouser in the US has in stock.http://www.mouser.com/Optoelectronics/Displays/LCD-Displays/LCD-Numeric-Display-Modules/_/N-6j739Zscv7

author: ivoras
author_rank: Contributor
timestamp: February 07, 2016, 09:30:42 pm
content: Hmmm, I must have been making a typo when searching (maybe "LED" instead of "LCD"), now I can find them too. On Banggood I still get LEDs instead of LCDs (http://www.banggood.com/search/7-segment-lcd.html). Strange. And thanks!I'd expected them to cost (even) less, though.

author: Farley
author_rank: Regular Contributor
timestamp: February 07, 2016, 09:40:30 pm
content: Search for KTM-S1201. It may be what you're looking for.This place may still have some of them. I've never done business with them though.http://www.thepartsplace.k5nwa.com/index.php?route=product/product&product_id=58

author: mariush
author_rank: Super Contributor
timestamp: February 07, 2016, 09:44:35 pm
content: Farnell has some basic LCD 7-segment displays though they're not as cheap as you think :http://uk.farnell.com/7-segment-lcd-displaysThere's a few more basic LCD displays (with no controller, just the lcd with the elements) in the alphanumeric displays section, and in that section there's also some cool tiny lcd displays with controller built in the back that you could use in replacement for a display like the one you're thinking about :http://uk.farnell.com/webapp/wcs/stores/servlet/Search?catalogId=15001&langId=44&storeId=10151&categoryId=700000006090&pageSize=25&showResults=true

author: Blackwarrior
author_rank: Unknown
timestamp: February 07, 2016, 09:47:11 pm
content: Here is another one off ebay..http://pages.ebay.com/link/?nav=item.view&alt=web&id=221200810792

author: Muttley Snickers
author_rank: Unknown
timestamp: February 07, 2016, 09:51:48 pm
content: I found some information linked here below on field effect LCD's.....https://www.eevblog.com/forum/other-blog-specific/in-the-weee-k-1-my-first-attempt-at-a-dumpster-diving-segment/https://www.eevblog.com/forum/other-blog-specific/in-the-weee-k1-follow-up-testing-the-displays/http://www.jaycar.com.au/Active-Components/Display-%26-Embedded/LCD-Displays/4-Digit-Field-Effect-LCD/p/ZD1886

author: karoru
author_rank: Regular Contributor
timestamp: February 07, 2016, 10:00:12 pm
content: It always amazes me how nowadays you can buy few chinese "all for $1 store/trade show giveaway" calculators for a price of damn seven-segment four-digit LCD. That's mass production for ya:)

author: chris_leyson
author_rank: Super Contributor
timestamp: February 07, 2016, 10:49:16 pm
content: I picked up some 4 digit 7 segment calculator size LEDs a while ago from either Adafruit or somewhere similar. They're new old stock and were meant as spares for some Tekteronix readouts. You can still buy them but stock doesn't hang around for long.