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📊 Elevate Your Projects with E-Ink Magic!
The Waveshare 4.2inch E-Ink Display Module is a versatile and energy-efficient display solution, boasting a 400x300 resolution and SPI interface, making it compatible with a variety of microcontrollers including Raspberry Pi and Arduino. Ideal for applications like shelf labels and industrial instruments, this module offers a wide viewing angle and retains its display even without power, ensuring your projects stand out sustainably.
| Standing screen display size | 4.2 Inches |
| Wireless Type | Infrared |
| Brand | waveshare |
| Series | 4.2inch e-Paper Module (B) |
| Item model number | 4.2inch e-Paper Module |
| Item Weight | 0.352 ounces |
| Product Dimensions | 7.09 x 3.94 x 3.54 inches |
| Item Dimensions LxWxH | 7.09 x 3.94 x 3.54 inches |
| Color | 4.2inch e-Paper Module |
| Processor Brand | VIA |
| Number of Processors | 1 |
| Manufacturer | Waveshare |
| ASIN | B074NR1SW2 |
| Is Discontinued By Manufacturer | No |
| Date First Available | August 22, 2017 |
P**R
Works with ESP32
Hooked it up to an ESP32 - works no problem! Yes, there was some reading and video watching I had to do to get the pins right (couldn't get it to work with ESP32-C6, but S2 worked perfectly! I probably had to spend a bit more time with the C6 - just was lazy). So, as far as display itself - crisp and works as expected from an E-Ink display.
M**C
Does exactly as advertised
Nothing unexpected, worked with my ESP32-WROOM-32D and platformio. When using the Eink library, use GxEPD2_420_GDEY042T81 as the eink driver. So the device initialization will look like this:// Pin Definitions for E-Ink Display#define EPD_CS 5#define EPD_DC 17#define EPD_RST 16#define EPD_BUSY 4GxEPD2_BW<GxEPD2_420_GDEY042T81, GxEPD2_420_GDEY042T81::HEIGHT> display(GxEPD2_420_GDEY042T81(EPD_CS, EPD_DC, EPD_RST, EPD_BUSY));
J**Z
Works as described
It works. Connecting the SPI interface with the supplied Dupont connectors requires care. One wrong pin and you could fry something. I triple checked everything. For people who can count above 2 this may not be a problem. Connected properly it works. Load up the Waveshare apis, use the right one and you're set.
R**.
This is truly low power
My current project when I Changed from 1602 to e-paper last two or more days on a charge.
M**N
A huge waste of time
Agree with others, these are awful. Highly unreliable, with even the default code only works part of the time. You really need to find a good combination of hardware to work with these, and they all seem to have a short life. I've been using these for years and stupidly kept buying new ones to either replace the failing old ones, or trying to get the new ones to work. I regret going do this rabbit hole. A huge waste of time, due to the limited options out there.
S**S
Bought 2 to make dynamic picture frames
These work great. I hooked them up to adrduino minis (3v) to create dynamic picture frames. Runs off of 2AA batteries. Picture frame updates every 3 minutes. So far both are still running on the original batteries (2 months).
I**N
works great!
Just clone the ePaper github repo and hook up as per below, module works great and looks even better:VCC => 3.3VGND => GNDDIN => MOSICLK => SCLKCS => CE0DC => 25RST => 17BUSY => 24
E**E
Excellent
Documentation provided was good, product works as expected. Minor concerns are that the grays are 25% and 50%, instead of 33% and 66%, leading to an irregular color curve, but that's something that can be worked around, and mounting points not putting the actual display part in the center.
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