Waveshare 4.2" NFC-Powered e-Paper Evaluation Kit, Wireless Powering & Data Transfer (Not Compatible w/ Samsung)
Eliminates battery concerns with NFC-powered display
Includes NFC reader and micro SD for immediate use
Features 400x300 resolution and >170° viewing angle
Offers multiple interfaces with ST25R3911B and AT32F413RBT7
Ideal for tags and labels with stable, wireless operation
The Waveshare 4.2" NFC-Powered e-Paper Evaluation Kit, Wireless Powering & Data Transfer (Not Compatible w/ Samsung) is an innovative solution for those seeking a battery-free display technology. This kit utilizes passive NFC technology, enabling wireless powering and data transfer without the need for a battery, thus eliminating concerns about battery life and messy wiring. The e-paper display can be refreshed using a smartphone with NFC capability or an NFC reader, providing a seamless and stable operation.
The kit includes an NFC-powered e-paper display, an NFC reader, a micro SD card, and other essential accessories, making it ready for immediate use. The NFC board features the ST25R3911B NFC chip and the AT32F413RBT7 controller, which are integral to its operation. The board also includes an OLED display, user buttons, and commonly used interfaces, enhancing its functionality and ease of use.
This e-paper evaluation kit is particularly suitable for applications such as price tags, asset or equipment tags, shelf labels, and conference name tags. Its display offers a resolution of 400x300 with a viewing angle greater than 170 degrees, ensuring clear visibility. The kit's design and functionality make it a versatile tool for various labeling and tagging needs.
1x Waveshare 4.2" NFC-Powered e-Paper Evaluation Kit, Wireless Powering & Data Transfer (Not Compatible w/ Samsung)
Refresh Time: 4 seconds (data transfer time not included)
Dot Pitch: 0.212×0.212
Resolution: 400×300
Viewing Angle: Greater than 170°
NFC Board Introduction: ST25R3911B NFC Chip, AT32F413RBT7 Controller, OLED Display, User Buttons, Common Interfaces
AT32F413RBT7: Core: ARM® 32-bit Cortex™-M4F, Operating Frequency: 200 MHz, Operating Voltage: 2.0V-3.6V, Package: LQFP64, Memories: 128 kB Flash, 32 kB SRAM, Communication Interfaces: 2 x SPI, 5 x USART, 2 x I2C, 2 x CAN, 1 x USB, 1 x SDIO, AD & DA Converters: 2 x AD (12-bit, shares 16 channels)
ST25R3911B: NFC chip, also known as AS3911B
23LC1024: SRAM, 1 Mbit
CP2102: USB to UART converter for debugging
SPX3819: 3.3V voltage regulator
1.3" OLED: Blue display, 128×64 pixels, SH1106 driver
4 user buttons
2 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
