2.13inch e-Paper Cloud Module
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Introduction
Universal e-Paper Driver HAT, Onboard ESP32, supports various Waveshare SPI interface e-Paper raw panels. Supports refreshing image to e-paper via WIFI or Bluetooth
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Overview
2.13inch e-Paper Cloud Module is a wireless network driver board designed for the 2.13-inch e-Paper display. Onboard battery header for power supply and Type-C interface. As it supports Arduino development, you can use it as an Arduino board. Support receiving image information from a PC or smartphone via WiFi or Bluetooth and display it on the e-paper screen.
Features
- Incorporates ESP32, and supports Arduino development.
- No backlight, keeps displaying the latest content for a long time even when powered down.
- Voltage detection circuit for preventing the battery from over-discharging.
- Features battery connector and recharge circuit, allows offline running.
- Provides Android APP for refreshing the module via Bluetooth EDR, easy to use.
- Provides HTML host computer code for refreshing the module via the remote webpage, easy to integrate into sorts of Internet applications.
- Supports Floyd-Steinberg's dithering algorithm, more color combinations, and better shadow rendering for the original image.
- Supports popular image formats: BMP, JPEG, GIF, PNG, etc.
- Delivered with embedded e-Paper driver (open source).
Specifications
- WiFi Standard: 802.11b/g/n
- Interface: SPI
- Bluetooth: 4.2 (BR/EDR/BLE included)
- Communication Interface: 3-wire SPI, 4-wire SPI (default)
- Power Supply: Battery
- Charge Current: 1A
- Outline Dimensions: 71mm × 30.2mm
- Display Dimensions: 48.55mm × 23.7mm
- Dot Pitch: 0.194 × 0.194mm
- Resolution: 250*122
- Display Color: Black, white
- Grey Level: 2
- Partial Refresh Time: 0.3s
- Full Refresh Time: 2s
【Note】:
Refresh time: The data provided is experimental data, the actual time may be a little different. It is normal that the e-paper blinks when fully updated.
Power: The power data is experimental data.
Application
This product cooperates with the ink screen and is suitable for the application scenario of wireless refreshing.
- Electronic name card
- Device label
- Shelf label
- Information storage
- Serial information display board, etc.
Pinout
| PIN (e-Paper) | ESP32 | Description |
| VCC | VCC | Power input (3.3V) |
| GND | GND | GND |
| KEY | 12 | User button |
| SCK | 13 | CLK pin of SPI, clock input |
| DIN | 14 | MOSI pin of SPI, data input |
| CS | 15 | Chip select pin of SPI, Low active |
| BUSY | 25 | Busy pin, indicates whether the e-Paper is busy |
| RST | 26 | Reset pin, Low active |
| DC | 27 | Data/Command control pin, Low for Command and High for Data |
| ADC | 36 | ADC data input, the voltage detected is 1/3 of the battery voltage. |
PS: The pins described above were connected by default, you need to operate them.