
Price: $71.99
(as of Feb 04, 2025 05:08:53 UTC – Details)
Product Description
2.13″ 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 Transfe
NFC Board Introduction
ST25R3911B NFC Chip, AT32F413RBT7 Controller, OLED Display, User Buttons, And Common Used Interfaces
AT32F413RBT7Core: ARM 32-bit Cortex-M4F Operating Frequency: 200MHz Operating Voltage: 2.0V-3.6V Package: LQFP64 Memories: 128kB Flash, 32kB SRAM Communication Interfaces: 2 x SPI, 5 x USART, 2 x I2C, 2 x CAN, 1 x USB, 1x SDIO 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
Specifications
POWER SUPPLY
Wireless
DISPLAY COLOR
Black / White
DOT PITCH
0.194×0.194
RESOLUTION
250×122
VIEWING ANGLE
>170°
GREY SCALE
2
REFRESH TIME
2s (data transfer time is not included)
DISPLAY SIZE
49.70mm×21.75mm
OUTLINE DIMENSION
65.35mm×40.05mm
Outline Dimensions
Learn more: af0.cn/ZOmvM
Comes With NFC-Powered E-Paper, NFC Reader, Micro SD Card, And Essential Accessories. Ready-To-Use
Adopts Novel Passive NFC Technology. No Battery Required, No More Battery Life Trouble
Passive NFC Solution, No Battery Required, No Messy Wiring, Stable Operation
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
ST25R3911B NFC Chip, STM32F103R Controller, OLED Display, User Buttons, And Common Used Interfaces