Description
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, 128×64 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 configuration
RXD: connected to RXD2 by default, changeable to RXD1 via 0Ω resistor
TXD: connected to TXD2 by default, changeable to TXD1 via 0Ω 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 800x480, 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.
