Author Topic: looking for a decent quality LCD  (Read 820 times)

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Offline bitter_mikeTopic starter

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looking for a decent quality LCD
« on: July 04, 2020, 08:46:08 pm »
Hey,

I'm looking for a decent quality 16x2 LCD for a project and I was hoping for a recommendation. I've been scrounging some from an Elegoo knockoff Arduino kit and somehow all 3 of them that I have are broken in slightly different ways (mostly the data pins having very low resistance pathways to ground).

I don't really have any other requirements. I guess I would prefer one with the standard 16 pin configuration as opposed to something with an I2C interface.

Thanks.
 

Offline james_s

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Re: looking for a decent quality LCD
« Reply #1 on: July 04, 2020, 09:06:00 pm »
I've used lots of random ones from China sellers and can't recall ever having a problem with any of them. Are you sure the ones you have weren't damaged by ESD or other incidents? You could buy them from mainstream distributors like Digikey or Mouser if you're having problems finding good ones elsewhere.
 

Offline bitter_mikeTopic starter

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Re: looking for a decent quality LCD
« Reply #2 on: July 04, 2020, 09:26:56 pm »
That's entirely possible. They weren't in anti-static bags, but all 3 of them being busted seemed odd to me.
 

Offline rhodges

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Re: looking for a decent quality LCD
« Reply #3 on: July 04, 2020, 10:42:42 pm »
I have bought many from random ebay vendors in China, and no problems. Traditional yellow-green, white on blue, white on red, they all behaved for me. I can send you one if you are in a hurry.
Currently developing embedded RISC-V. Recently STM32 and STM8. All are excellent choices. Past includes 6809, Z80, 8086, PIC, MIPS, PNX1302, and some 8748 and 6805. Check out my public code on github. https://github.com/unfrozen
 

Offline rdl

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Re: looking for a decent quality LCD
« Reply #4 on: July 04, 2020, 11:40:59 pm »
I bought a few cheap ones from China around 10 years ago, maybe they've gotten better since. Every one I tried had terrible quality displays. Poor contrast, ghosting, slow refresh, etc. Started buying brand names after that, Newhaven mostly because Mouser stocks them.
 

Offline rhodges

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Re: looking for a decent quality LCD
« Reply #5 on: July 05, 2020, 12:12:34 am »
Every one I tried had terrible quality displays.
The ones I bought in the last couple years have been fine. Contrast was easily controlled with a pot. A really frugal design might get by with just a resistor.
Currently developing embedded RISC-V. Recently STM32 and STM8. All are excellent choices. Past includes 6809, Z80, 8086, PIC, MIPS, PNX1302, and some 8748 and 6805. Check out my public code on github. https://github.com/unfrozen
 

Offline eblc1388

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Re: looking for a decent quality LCD
« Reply #6 on: July 05, 2020, 01:12:25 am »
Besides adjusting the contrast, a trim pot will also affect the bias/viewing angle of the display to some extent. The visual improvement is quite big.

Always use one, 10K trim pot is perfect for the job.
 

Offline bitter_mikeTopic starter

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Re: looking for a decent quality LCD
« Reply #7 on: July 05, 2020, 02:44:28 am »
I think I'll grab a few more cheapies off Amazon and grab a Newhaven one to compare. Thanks for the recommendation.
 

Offline tonyh88

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Re: looking for a decent quality LCD
« Reply #8 on: July 06, 2020, 12:26:19 am »
It  depends on your  budget but the Newhaven ones are good and reliable at around 10$USD each .
 


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