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eInk Display pHAT - 2.13" (250x122)

Name: eInk Display pHAT - 2.13" (250x122)
Brand: ModMyPi
SKU: MMP-0905
Price: 17.99 GBP
Availability: InStock
Rating: 4.8 (4 reviews)

ModMyPiSKU: MMP-0905

4 Reviews

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Looking for an eInk / ePaper display for your Raspberry Pi or Raspberry Pi Zero? Look no further! These gorgeous little eInk / ePaper displays from Waveshare are available in 2.9", 2.13" & 1.54" sizes, so you're bound to find the perfect fit for your project!

ePaper / eInk displays are designed to replicate the appearance of ink on paper. Unlike regular displays, which loose their image when power is removed, eInk screens are able to hold text and images indefinitely, even without power. ePaper screens are therefore ultra low power, designed to have a wide viewing angle and additionally have limited reflection under sunlight. The applications are limitless!

The E-Ink display modules from waveshare come complete with an embedded controller PCB, communicating via SPI interface, and support partial refresh.

This module includes a 2.13" (250x122) eInk display & pHAT PCB format, designed to plug directly onto your Raspberry Pi Zero or Zero W.

Features

No backlight, keeps displaying last content for a long time even when power down
Ultra low power consumption, basically power is only required for refreshing
Compatible with Raspberry Pi 2B/3B/Zero/Zero W
Preserved solder pads for SPI interface, for connecting with other controller boards like Arduino/Nucleo, etc.
Comes with development resources and manual (examples for Raspberry Pi/Arduino/STM32)

Specification

Operating voltage: 3.3V
Interface: SPI
Outline dimension: 65mm × 30.2mm
Display size: 23.71mm × 48.55mm
Dot pitch: 0.194 × 0.194
Resolution: 250 × 122
Display color: black, white
Grey level: 2
Refresh power: 26.4mW(typ.)
Standby power: <0.17mW
Viewing angle: >170°

Waveshare Wiki

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Accreditations

4.8 4 Reviews

3 Questions \ 6 Answers

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Reviews (4)
Questions (3)

Updating Results

31/03/20

David R.

12/03/20

Great for the Price

Given the price this is a terrific product. It worked straightaway on my Pi Zero W. The display is clear & refreshes quickly. I would buy again should I need another rink display.

Alan S.

28/02/20

Pwnagotchi

This is what you need to make a pwnagotchi!
Excellent

Stephen C.

06/02/20

Super Clear

The Waveshare display is crystal clear, low power and of course stays visible when power is removed. The support library for Python was easily integrated into my code.

One feature I am using is displaying QR codes generated on the fly in Python for secure WiFi access (WiFi Hotspot pass code is unique for each session). Even using QR codes at a resolution of 1 pixel per point, the scan on my phone worked flawlessley.

The trade off with e-ink displays is update or refresh rate, though the example does have a 'partial update' example based around a digital clock.

The unit plugs into the header on the Raspberry Pi. Though the external connector on the PCB means no heatsink on the CPU!

With some "surgery", the connector is readily removed with some soldering skills if a heat sink is required (or a slimmer PiZero desired). Of course such modification would probably invalidate any warranty!

Its as clear as the photograph shows and easy to work with. If using the python library examples this code snippet will inver the image....
image=image.transpose(Image.ROTATE_180)

place it just before the line(s)
epd.display(epd.getbuffer(image))

Additional font sizes are easily accessed e.g.
font12 = ImageFont.truetype(os.path.join(picdir, 'Font.ttc'), 12)

Reference font12 when drawing text replacing the font 15 or 24 in the examples

The attached photo is one of the test bit maps loaded on the display.

Image of Review by Stephen C. on 6 Feb 2020 number 1

Mark S.

31/12/19

Great hardware, reasonable software, no documentation

This thing is actually great, and the python software works ... but getting partial refreshes and things to work well requires fiddling, and there are no docs at all! If you're prepared to tinker, you'll enjoy this, if not, probably steer clear.

Nat W.

13/01/20

Q: When I turn the power off the background goes "grainy" in vertical lines. Is this correct, I thought these were meant to function as "e-paper" with no power so you could use it as a badge for example?

Andrew R.

18/01/20

A: Mine does not do this, however if the screen is mid-refresh when you cut the power it can have a shadowing effect.

Nathan B.

16/01/20

A: What are you using for controlling it on hardware and software?

It sounds like signals may still be getting sent while power drops.

Lotkas

24/01/20

Q: Is this v1 or v2?

The Pi Hut

29/01/20

A: At the time of writing - v2

robin

30/03/20

Q: Hi, is this the version 2? There is no picture of the back of the board https://www.waveshare.com/wiki/2.13inch_e-Paper_HAT Thanks!

Alan S.

31/03/20

A: Yes, this is the V2. Perfect for the pwnagotchi

Mark S.

30/03/20

A: I received a version 2 a few months ago, so yes, probably.

Stephen C.

30/03/20

A: Hi, the PCB is marked on the rear "Rev2.1"

Here is a link with pictures of the board supplied..
https://www.waveshare.com/product/displays/e-paper/epaper-3/2.13inch-e-paper-hat.htm

2.13inch e-Paper HAT Waveshare

Note
The (yellowish) expansion connector on the PCB may interfere with some heatsinks frequently fitted to Raspberry Pi's when over clocking of the CPU is employed. Another option if you have a heatsink is to source an extended header or short ribbon cable connection.

I don't have heatsinks on my Pi Zero W, so no issue for me.

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eInk Display pHAT - 2.13" (250x122)

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