4.2inch NFC-Powered e-Paper

4.2inch e-Paper 400x300, 4.2inch E-Ink display raw panel

4.2inch e-Paper Module 400x300, 4.2inch E-Ink display module, SPI interface

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Primary Attribute Category: OLEDs / LCDs, LCD {{{userDefinedInfo}}}: {{{userdefinedvalue}}} Brand: Waveshare

Website International: Waveshare website Chinese: 官方中文站点

Onboard Interfaces SPI

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Instruction

This is an NFC-powered 4.2inch e-Paper Module, with 400x300 resolution. Users can transmit data from smart phone or NFC reader to e-Papre and refresh by NFC.

Features

• No backlight required, e-Paper keep displaying the last content for a long time without power
• No power adapter requried
• You can modify the display content by smart phone
• Compe with ABS case
• App is provided

Specification

• Power: NFC-powered
• Resolution: 400x300
• Dot pitch: 0x212x 0x212
• Refresh time: 4s
• Display color: black, white
• Viewing angle: >170°
• Outline dimension: 105.0mm x 94.1mm, 9.90mm
• Display dimension: 84.8mm x 63.6mm

User guide

You can download the app from #Resources and install it to your phone, note that the app can only supports Android 4.0（Ice Cream Sandwich） and above.

APP使用步骤

使用APP的步骤是：

• 点击下发的图片按钮设置图片，（图片可以是你手机相册里面的图片，也可以是使用摄像机拍照，注意，这里需要相机权限）

除了相机和拍照外，你还可以手动编辑文字图片

• 选择图片之后可以对图片进行裁剪，调整大小和旋转图像,为了更好的刷新效果，建议您预先根绝墨水屏参数设置好图片的大小以及各式。

• 在主页面，你可以选择图像处理方式（纯黑白、灰阶化、模块化、素描化、霓虹化）
• 在主页面，还可以点击左下角的调整按钮调整图像的亮度和对比度。 点击右下角的加号图标可以对图片进行颜色取反，方向，图片上下或左右颠倒的设置

• 再设置好了之后，将手机的NFC天线区域贴近4.2inch NFC-Powered e-Paper背面的天线区域。APP会感应墨水屏并自动进行数据传输和刷新操作

【注意】使用前先确保手机NFC已经开启，在数据传输和刷新的过程中，请不要移动手机。

• 额外功能

你还可以对图片进行涂鸦。点击右上角的...图标，选择相册，然后选择一张图片进入涂鸦模式。

Resources

• Android APP

Support

If you require technical support, please go to the Support page and open a ticket.