• sales

    +86-0755-88291180

2.13inch e-Paper HAT (D)

Introduction


Note: The raw panel require a driver board, If you are the first time use this e-Paper, we recommend you to buy the HAT version or buy more one driver hat for easy use, otherwise you need to make the driver board yourself. And this instruction is based on the version with PCB or driver board. 212x104, 2.13inch flexible E-Ink display HAT for Raspberry Pi, SPI interface. Support partial refresh.


Working principle


Introduction


This product is an E-paper device adopting the image display technology of Microencapsulated Electrophoretic Display, MED. The initial approach is to create tiny spheres, in which the charged color pigments are suspending in the transparent oil and would move depending on the electronic charge. The E-paper screen display patterns by reflecting the ambient light, so it has no background light requirement. Under sunshine, the E-paper screen still has high visibility with a wide viewing angle of 180 degree. It is the ideal choice for E-reading.


Communication protocol




Note: Different from the traditional SPI protocol, the data line from the slave to the master is hidden since the device only has display requirement.

  • CS is slave chip select, when CS is low, the chip is enabled.
  • DC is data/command control pin, when DC = 0, write command, when DC = 1, write data.
  • SCLK is the SPI communication clock.
  • SDIN is the data line from the master to the slave in SPI communication.

SPI communication has data transfer timing, which is combined by CPHA and CPOL.

  1. CPOL determines the level of the serial synchronous clock at idle state. When CPOL = 0, the level is Low. However, CPOL has little effect to the transmission.
  2. CPHA determines whether data is collected at the first clock edge or at the second clock edge of serial synchronous clock; when CPHL = 0, data is collected at the first clock edge.
  • There are 4 SPI communication modes. SPI0 is commonly used, in which CPHL = 0, CPOL = 0.

As you can see from the figure above, data transmission starts at the first falling edge of SCLK, and 8 bits of data are transferred in one clock cycle. In here, SPI0 is in used, and data is transferred by bits, MSB first.

TAG: ESP32 S3 SpotPear ESP32 C3 Servo PWM motor WP5320 WP5335 35/20KG.CM 180° PWM digital servo double ball bearings Core3566102032 ESP32 S3 Development Board 1.85 inch Round LCD Display 360×360 QMI8658 Sensor / MIC / SD /MP3 Audio /Battery Port LVGL/HMI For Arduino ESP32 P4 Development Board WIFI6 3.4 inch LCD Round Display 3.4inch TouchScreen 800×800 Dual Microphones ESP32 S3 Development Board 1.47 inch LCD Touch Screen 1.47inch Display 172×320 SD AXS5106L JD9853 NVIDIA Jetson Raspberry Pi 10.1 inch DSI MIPI LCD TouchScreen Display 10.1inch 720x1280 For Luckfox Lyra RK3506/ESP32-P4/Luckfox Omni3576 Raspberry Pi 13.3 inch FHD Monitor LCD 1080P Capacitive TouchScreen Display Type-C/HDMI For Computer PC ESP32 Development Board WiFi+Bluetooth Ultra Low Power Dual Core ESP 32S ESP 32 Similar ESP8266 Sipeed FPGA Tang Primer 20K Dock/Lite 128M DDR3 Development Board GW2A-LV18PG256C8/I7 Magnetic Encoder Servo Motor 120KG.CM 24V 360° RS485 High Precision And Large Torque ESP32 S3 LCD Camera Development Board 2 inch Display QMI8658 Sensor / Battery Port LVGL/HMI For Arduino Raspberry Pi 21.5 inch Type C/HDMI Display Screen 1920x1080 Computer PC Phone Xbox/PS4/Switch Raspberry Pi 1.3inch LCD Sipeed MaixCAM Pro AI Camera Kit SG2002 RISC-V YOLO OpenCV Audio WIFI6 Linux Board IMU MicroPhone Speaker 2.13Inch E-Ink ESP32 UART USB Bus Servo ST RSBL Driver board For Raspberry PI Robot