r/Reflective_LCD

Been thinking about tinkering a frontlight module for the waveshare rlcd esp32 (link at the end).

But I've not found many resources on the subject. I saw many people doing backlight on other displays, which is not what I am looking for.

I've been thinking about trying to use acrylic glass as a diffuser. But I'm unsure of the proper dimensions. How thick does it need to be? Is there better diffuser materials? Any kind of specific led should be used? Any materials or resources on the matter?

https://www.waveshare.com/esp32-s3-rlcd-4.2.htm?srsltid=AfmBOop-YJULmQtWgNGyeSEXOPFXMlFAv2LU5ULuWgXusYKQZRKfiVkm

Video from Volos Projects

I just received the Waveshare 4.2" RLCD ESP32-S3 board this week and added support for it to my OneBitDisplay library. With a few minor changes, I was able to get the full screen update speed to a steady 42 FPS (see the video). I added this Arduino example to the library as "rlcd_speed_test".

https://github.com/bitbank2/OneBitDisplay

https://youtu.be/p-WI_dmIwO8

Update:

I remembered that digitalWrite() in Arduino is unusually slow. I changed them to gpio_set_level() and now it runs at 208 FPS :)

https://preview.redd.it/mb97h52rftzg1.jpg?width=640&format=pjpg&auto=webp&s=8e1f8ed2623ce19f9574aafb141d175a075f497d

If you find it difficult to look at screens in general, and color accuracy isn't a concern.

1. For laptop/monitor screens, get yourself a "privacy screen". It does much more than dimming the screen, too long to get into in this post but highly recommended.
2. For some, if you get a TN matte monitor + a privacy screen viewed from matte side. Not perfect, however very close to comfort of RLCD without the price tag
3. On iPhone, might help if you set "Reduce White Point" to 50% or higher.