Can't find narrow-bezel LED bar graphs for project - Page 1
Forum section: electronics / projects

author: krcm0209
author_rank: Contributor
timestamp: February 01, 2021, 10:27:48 pm
content: I've been searching for a 10-12 segment LED bar graph for a project I'm working on. However, my design requires that multiple LED bar graphs are arranged side-by-side with minimal dead-space between the columns of lit LEDs. I would prefer a through-hole part, but could be swayed to go surface mount if absolutely necessary.I'm open to stacking two 5-6 segment LED bar graphs to create a 10-12 segment column.The issue is that the only parts I am finding have relatively large bezels in at least one dimension, and are not well suited to creating a densely packed arrangement.For example, parts like this are extremely common:https://www.digikey.com/en/products/detail/lite-on-inc/LTA-1000G/153278But there is way too much material flanking the LED windows. Ideally, I'd want at most as much material on the sides of the LED windows as is between the windows. (narrow part bezels)I was able to find specialized modules that use bar graphs that look like what I'd want, but I cannot find the bar graphs by themselves for purchase.Decent example:https://www.ebay.com/itm/32-bit-Level-Indicator-Panel-VU-Meter-Mono-Channel-LED-DIY-Kit-/132887705942

author: ledtester
author_rank: Super Contributor
timestamp: February 01, 2021, 10:47:50 pm
content: Quote from: krcm0209 on February 01, 2021, 10:27:48 pmWould an "led matrix" work for you?https://learn.adafruit.com/adafruit-led-backpack/bi-color-8x8-matrixThey are designed to be tile-able if you need more rows or columns.

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: February 01, 2021, 10:51:51 pm
content: Stack up a bunch of these?https://www.digikey.ca/en/products/detail/everlight-electronics-co-ltd/MV57124A/2675609

author: krcm0209
author_rank: Contributor
timestamp: February 01, 2021, 11:03:12 pm
content: Hey, thanks for getting me to think a bit outside the box. This might work for me.https://www.digikey.com/en/products/detail/everlight-electronics-co-ltd/MV54124A/2675599Also, I've just discovered this site.http://www.primeled.com/I'll try contacting them, they seem to make bar graphs with pretty thin bezels.Upon closer inspection of their datasheets, they don't seem to be packable as densely as I'd want.

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: February 01, 2021, 11:18:41 pm
content: Pretty sure they still make bezel-less rectangular LEDs with a frosted top. I had a bunch of them in the '80s.The Commodore 128D, and maybe the Amiga IIRC, use really wide dual LEDs in one wide rectangular package.They might also make light pipes that look like rectangular LEDs but actually are just a piece of diffusing plastic that you mount on top of SMT LEDs or whatever...https://www.mouser.ca/ProductDetail/Lumex/LPF-S014331S/?qs=%2Fha2pyFaduhOw%252BEA5Be83WKVAVvfkSD6kr9g6QtzVFY%3D

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: February 02, 2021, 12:02:21 am
content: fyi

author: Habropoda
author_rank: Regular Contributor
timestamp: February 02, 2021, 12:48:06 am
content: Frosted rectangulars like these?https://www.digikey.com/short/4t9dft

author: ebclr
author_rank: Super Contributor
timestamp: February 02, 2021, 02:19:03 am
content: https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=Led+bargraph&_sacat=0&LH_TitleDesc=0&_odkw=led+bar+graph&_osacat=0

author: jbeng
author_rank: Regular Contributor
timestamp: February 02, 2021, 02:30:34 am
content: It looks like you could stack as many of these together as you like...https://www.digikey.com/en/products/detail/lumex-opto-components-inc/SSA-LXH1025ID/144753They are available in red, super red, yellow & green