7.5inch Passive NFC-Powered E-Paper Evaluation Kit, No Battery, Wireless Powering & Data Transfer
NFC E-Paper Eval Kit

5″ NFC-Powered E-Paper Evaluation Kit Comes With NFC-Powered E-Paper
NFC Reader
Micro SD Card
And Essential Accessories Ready-To-Use

7.5″ NFC-Powered E-Paper

Adopts Novel Passive NFC Technology
No Battery Required
No More Battery Life Trouble

Wireless NFC-Powered Display Refreshing

Passive NFC Solution
No Battery Required
No Messy Wiring
Stable Operation

How It Works
To Refresh The Display Content, Use A Smart Phone With NFC Function, Or An NFC Reader, Close To The E-Paper For Both Wireless Powering And Data Transfer

NFC Board Introduction

ST25R3911B NFC Chip
STM32F103R Controller
OLED Display
User Buttons
And Common Used Interfaces

STM32F103RBT6

Core:ARM 32-bit Cortex-M3
Operating Frequency:72MHz
Operating Voltage:2.0V-3.6V
Package:LQFP64
Memories:128kB Flash, 20kB SRAM
Communication Interfaces:2 x SPI, 3 x USART, 2 x I2C, 1 x CAN, 1 x USB
AD & DA Converters:2 x AD (12-bit, shares 16 channels)

ST25R3911B:NFC chip, aka AS3911B
23LC1024:SRAM, 1Mbit
CP2102:USB TO UART converter, for debugging
SPX3819:3.3V voltage regulator
1.3″ OLED:blue display, 12864 pixels, SH1106 driver
4x user buttons:
2x user indicators
MCU unused pins
USB TO UART port
Micro SD slot
SWD programming interface
NFC induction coil
UART pin configurationRXD: connected to RXD2 by default, changeable to RXD1 via 0 resistorTXD: connected to TXD2 by default, changeable to TXD1 via 0 resistor

Refreshing Example
Refreshed By ST25R3911B NFC Board Included In The Kit

Outline Dimensions

Wiki:www.waveshare.com/wiki/7.5inch_NFC-Powered_e-Paper
Package Content

5inch NFC-Powered e-Paper x1
ST25R3911B NFC Board x1
Micro SD Card 16GB x1
Micro SD Card reader x1
USB-A to Micro-B cable x1

FAQs:
Q: How does this e-paper display get power?
A: This e-paper display utilizes passive NFC technology, meaning it receives power wirelessly from an NFC reader or NFC-enabled smartphone during data transfer. No battery is required.
Q: What is included in the evaluation kit?
A: The kit includes the 7.5-inch NFC-powered e-paper display, an NFC reader board (ST25R3911B), a Micro SD card, a Micro SD card reader, and a USB-A to Micro-B cable.
Q: What are the specifications of the e-paper display?
A: The e-paper display has a resolution of 800×480, a viewing angle of >170 degrees, 2 levels of grayscale (black and white), and a refresh time of approximately 5 seconds (excluding data transfer time).
Q: Can I use my smartphone to update the display content?
A: Yes, if your smartphone has NFC capability, you can use it to both power the display and transfer data to update the content.
Q: What is the purpose of the NFC reader board?
A: The NFC reader board is used to wirelessly power the e-paper display and transfer data to it. It also includes an OLED display, user buttons, and various interfaces for development and testing purposes.