Waveshare 4.2inch e-Paper Module User Manual

4.2inch e-Paper Module User Manual
V2.0 1 / 25
4.2inch e-Paper Module
User Manual
Version
Data
Description
V1.0
2017.05.17
Factory
V2.0
2018.12.05
Notes
【Notes】
⚫ Please read this manual before you use the e-Paper. Damage caused by wrong
operations is not within the scope of the warranty
⚫ This manual shows you how to use the e-paper with the demo codes we provide.
⚫ The e-paper described in this manual is Module/HAT version. (Raw panel should
work with driver board)
⚫ All specification supplied herein are subject to change without notice at any time.

Waveshare 4.2inch e-Paper Module Specifications

General

Display Type	e-Paper
Display Size	4.2 inch
Resolution	400 x 300
Interface	SPI
Operating Voltage	3.3V
Partial Refresh Time	0.3s
Full Refresh Time	4s
Viewing Angle	180°
Color Depth	1-bit
Weight	50 g
Operating Temperature	0°C to 50°C

Summary

SPECIFICATION

Technical Specifications

Details operating voltage, temperature, interface, dimensions, resolution, and refresh rate.

WORKING PRINCIPLE

4-Wire SPI Communication

Details the 4-wire SPI interface, including signal lines and timing.

DEMO CODES

RASPBERRY PI

Copying Examples to Raspberry Pi

Steps to copy demo code examples to a Raspberry Pi SD card.

BCM2835 Library Installation

WiringPi Library Installation

Running Demo Codes

Instructions on how to compile and run demo codes for Raspberry Pi.

EXPECTED RESULT (Raspberry Pi)

ARDUINO

Running Examples

EXPECTED RESULT (Arduino)

STM32

Hardware Connection

Table showing e-Paper pin connections to STM32 (Open103z).

Running Example

EXPECTED RESULT (STM32)

CODES DESCRIPTION

C Code Examples

Example of C code for bcm2835, including initialization and image buffer creation.

Reading and Displaying BMP Images

Reading Image Data from Array

Drawing Graphical Elements

C code functions for drawing points, lines, rectangles, and circles.

Sleep Mode Implementation

Python Code Initialization

Python Image Buffer Creation

Python Drawing with ImageDraw

Python code examples for drawing with the imageDraw library.

Python BMP Image Display

Python Sleep Mode

IMAGE DATA ARRAY

Creating Image Data Arrays

Guide to converting images into C arrays using Image2Lcd.exe.