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Product description: E-Paper E-Ink 4,2'' 400×300 px SPI - display with overlay for Raspberry Pi Pico - black and white - Waveshare 20344
E-Paper (E-ink) displayfrom Waveshare with 4,2 '' diagonal and 400 x 300 px resolution. It uses E-Ink technology, which makes our eyes do not get tired so much during prolonged use of the display. It works with voltage 3.3 V / 5 V. Displays white and black. It communicates through SPI interface. It is compatible with Raspberry Pi Pico. It consumes very little power.
Compatible with Raspberry Pi Pico
The manufacturer provides a product wiki page that contains information about the module's pinouts and a user guide.
Type of display.
What is an E-Paper E-Ink?
E-Paperdisplays use electrophoretic microcapsule technology for display: charged particles suspended in a transparent liquid will move to the sides of the microcapsule when an electric field is applied, making the microcapsule visible by reflecting ambient light, just like traditional printed paper. The E-Paper display clearly displays images/texts under lamplight or natural light, requires no backlight, and has a viewing angle of nearly 170°. This type of display is usually used in e-book readers because of its paper-like effect.
E-Paper E-Ink display terminals
Pinouts of 4.2" E-Paper E-Ink display for Raspberry Pi Pico - Waveshare 20344.
| E-paper | Pico | Description |
|---|---|---|
| VCC | VSYS | Supply voltage |
| GND | GND | System ground |
| DIN | GP11 | MOSI pin of SPI interface |
| CLK | GP10 | SPI interface clock pin |
| CS | GP9 | Low state activated chip select |
| DC | GP8 | Data/command control pin (high state: data; low state: command) |
| RST | GP12 | Reset pin, activated by a low state |
| BUSY | GP13 | BUSY pin |
Main features of the E-Paper E-Ink display
- E-Paper display clearly displays images/text in artificial and natural light, no backlight required
- It has a wide viewing angle up to 170°, usually used as an e-reader because of its paper-like effect
- Remembers and displays the last content for a long time, even when the power is turned off
- Very low power consumption, power is only needed for refreshment
- SPI interface
- 2 x user buttons and 1 x reset button for easy interaction
Set contents
- 4.2" E-Ink display
- Mounting spacers
Place the Raspberry Pi Pico into the display module as shown in the image above.
Raspberry Pi Pico E-Paper E-Ink display specifications
- Manufacturer: Waveshare
- Supply voltage: 3.3 V / 5 V
- Resolution: 400 x 300 px
- Viewing angle: 170°
- Gray scale: 4
- Interface: 3-wire SPI, 4-wire SPI
- Displayed color: black, white
- Full refresh time: 4 s
- Power at refresh: 26.4 mW
- Idle power consumption: up to 0.01 uA
- Touch: no
- Diagonal: 4.2"
- Pixel size: 0.212 x 0.212 mm
- External dimensions: 93.5 × 78.5 mm
- Display dimensions: 84.8 × 63.6 mm
- Weight: 13.76 g
E-Paper E-Ink 4,2'' 400 x 300 px SPI - display with overlay for Raspberry Pi Pico - black and white - Waveshare 20344
The offered product is a display made with modern E-paper technology. The screen is designed to be used as a monitor for Raspberry Pi Pico minicomputer. This device was manufactured by Waveshare company. The manufacturer is famous for producing high quality accessories for minicomputers like Raspberry Pi, Arduino and Micro:bit.
E-paper display is a great tool for people, The screen is ideal for people who stare at a screen for a long time, at still images. A screen of this kind does not cause eye fatigue and, in addition, is very energy-efficient. The device consumes energy only when the state of the pixels changes (the image changes) - a fixed image does not require any energy input.
Useful links |
