TFT-LCD & Touch Screen — ELECROW - FORUM

Wide Temperature LCD for Outdoor Use (-30°C to +85°C) – Real Challenges?

aptus — Wed, 08 Apr 2026 02:26:28 +0000

In a recent outdoor project, I ran into an issue that I think many people underestimate — LCD displays simply don’t behave well outside normal temperature ranges.

Most standard panels are fine in lab conditions, but once you drop below 0°C or go above 60°C, problems start showing up pretty quickly. Slow response, ghosting, brightness drop, even startup failure in cold environments.

For applications like outdoor terminals, EV chargers, or industrial controllers, this becomes a real bottleneck. The display often ends up being the weakest part of the system.

I’ve been looking into wide temperature LCD modules designed for -30°C to +85°C, and they seem to address a few key things: more stable liquid crystal materials, better backlight consistency, and generally more reliable signal transmission (especially with LVDS).

Came across a module with pretty typical specs for this category:
800×480 resolution, around 500 nits brightness, LVDS interface, and full wide temperature support.

If anyone’s curious, here’s the reference I was looking at:
7 Inch 800x480 LVDS -30°C to +85°C LCD Module

I’m more interested in real-world feedback though — especially long-term use in cold environments (below -20°C).

Do these wide temp panels actually hold up over time, or do they still degrade faster than expected?

How to replace/disable Elecrow splash screen on CrowPanel CM4?

jcz0824 — Fri, 20 Mar 2026 22:24:08 +0000

How do you disable/replace the elecrow logo splash screen on the CrowPanel CM4 ? I would like to replace this image with a custom graphic. Thank you

How do I disable "Elecrow" splash on startup

Bee — Wed, 28 Sep 2022 21:53:24 +0000

This is regarding the 7" display for Raspberry Pi. Kinda not really cool that you get to brand everything I make using your component.

RC070 7" LCD Display stopped working - SPI Flash

asdf_man — Sun, 22 Feb 2026 08:34:45 +0000

(Double post in the correct section as I cannot move the actual post - sorry for that)
Hi guys,
i have a problem with my 7" LCD Display ( 1024X600 Touch RC070 ). I used to use this screen with a tiny PC running ubuntu and it worked fine until it suddenly stopped working.
The touchscreen still works fine, but the panel stays dark (no picture or backlight at all). I measured all power rails and it seems there is voltage on all rails.
Then i measured the data transfer on the small SPI Flash and it seems that this flash does not respond, so I desoldered it and checked it with an spi flash reader. Unfortunately it could only some parts or sometimes nothing. So I assume that this flash is broken.

If I replace that chip I would need the firmware/hex file on that chip. Is the firmware running on this chip somehow available so I can repair my display?

Please see the picture attached.

Thanks for any help!

Is there an Arduino graphics primitive library with functionality mirroring the AdafruitGFX library

KG4RUL — Sat, 14 Mar 2026 15:34:23 +0000

Is there an Arduino graphics primitive library with the functionality mirroring the AdafruitGFX library? I like the all-in-one format of the ELECROW ESP32 Display 800×480, 7 Inch HMI Basic ESP32 RGB TFT LCD Touch Screen with Acrylic Case, 32-Bit LX6 Dual-Core Processor. However my project does not need anything more than simple primitives like: Line, Circle, Square, Text and no touch screen features.

3D file of DIS85101D

Jully — Thu, 18 Dec 2025 10:16:11 +0000

pls check the attachment file

CrowVision 11.6" for a 2-in-1

NetMassimo — Sun, 19 Oct 2025 09:45:37 +0000

Hello, I'm considering the use of an Elecrow CrowVision 11.6" Touchscreen Display Module coupled with a Raspberry Pi 5 as the basis to assemble a replacement for my HP 2-in-1. Currently, I'm using my HP 2-in-1 as a tablet mostly as an ebook reader (Kindle, Kobo, others with calibre) and with its screen attached as a netbook. The CrowVision+Pi5 is supposed to be used the same way, connecting a keyboard and a mouse to use it in a netbook mode.

I have a couple of doubts about the feasibility of this project.

My biggest problem is that the tablet mode works fine when it's battery-powered. I know that there are HATs to connect batteries to a Raspberry Pi, but what about a Pi 5 running with a CrowVision? Is there enough room? Are there any alternatives?

My minor problem concerns the keyboard and mouse. Following the KISS principle, I could simply connect a cheap USB keyboard and mouse, but how? I see that the Elecrow has a keypad interface: what kind is it? Sorry, I'm a PC guy trying to get into the maker world, so I'm not a great expert on this kind of device!

Thank you in advance for any suggestions and comments!

What is the difference between LED Character and Numeric displays?

bean — Fri, 14 Nov 2025 17:58:47 +0000

LED Numeric displays (like your Broadcom HDSP-521A/523A dual-digit seven-segment display) are designed to show only numbers. They use 7 segments to form digits from 0–9, which makes them ideal for counters, clocks, and simple numeric indicators.
LED Character displays can show alphabets, numbers, and symbols because they use dot-matrix or alphanumeric structures, giving them more flexibility.