Product description: E-Paper E-Ink 4,2'' module B 400×300 px SPI - display with overlay for Raspberry Pi Pico - black, white and red - Waveshare 20345
E-Paper (E-ink) displayfrom Waveshare with a diagonal of 4.2'' and a resolution equal to 400 x 300 px. It uses E-Ink technology, which makes our eyes don't get tired so much during prolonged use of the display. It works with voltage 3.3 V / 5 V. Displays white, black and red. It communicates through SPI interface. It is compatible with Raspberry Pi Pico. It consumes very low 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.
Display Type.
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/text in 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 E-Paper E-Ink 4.2" module B for Raspberry Pi Pico - Waveshare 20345.
| 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 module B
- 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
- Modul B
- Supply voltage: 3.3 V / 5 V
- Resolution: 400 x 300 px
- Viewing angle: 170°
- Gray scale: 2
- Interface: 3-wire SPI, 4-wire SPI
- Displayed color: black, white and red
- Full refresh time: 15 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: 15 g
E-Paper E-Ink 4,2'' module B 400×300 px SPI - display with overlay for Raspberry Pi Pico - black, white and red - Waveshare 20345
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. Manufacturer is famous for producing high quality accessories for minicomputers like Raspberry Pi, Arduino or Micro:bit.
E-paper display is a great tool for people who stare at the screen for a long time, at still images. The screen of this type 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 |
