PaperColor

SKU:C151

Description

PaperColor is a development board featuring a 4-inch E Ink Spectra 6 full-color e-paper display with a resolution of 400x600, offering both low power consumption and high visibility. It is built around an integrated ESP32-S3R8 core with 16MB Flash and 8MB PSRAM, and supports 2.4 GHz Wi-Fi wireless communication. The board incorporates a complete human-machine interaction system, including three programmable buttons, an audio system based on the ES8311 audio codec, a MEMS microphone with AEC echo cancellation, and a speaker driven by an AW8737A amplifier — enabling high-quality voice capture and audio playback. In terms of expanded functionality, the board integrates an SHT40 temperature and humidity sensor, RX8130CE real-time clock, microSD card slot, infrared emitter, two RGB LEDs, and an HY2.0-4P expansion interface. Combined with the M5PM1 multi-stage power management system and a 1250mAh battery, it enables long-lasting, low-power operation. Suitable for IoT and embedded applications such as electronic signage, voice interaction terminals, environmental monitoring instruments, and art display installations.

Tutorial

Arduino IDE

This tutorial introduces how to program and control the PaperColor device using Arduino IDE.

Factory Firmware Usage Guide

This tutorial explains how to program and control the PaperColor device using Arduino IDE.

Features

ESP32-S3R8 Core:
- 16MB Flash + 8MB PSRAM
- 2.4 GHz Wi-Fi
4-inch E Ink Spectra 6 Full-Color E-Paper Display
Built-in 1250mAh Battery
microSD Card Slot
Audio Interaction:
- ES8311 Audio Codec
- 1W Speaker + MEMS Microphone
Human-Machine Interaction:
- 3x User Buttons + 1x Power Button
- Infrared Emitter
- 2x RGB LED
Onboard SHT40 Temperature & Humidity Sensor
RX8130CE Real-Time Clock

Includes

1 x PaperColor

Applications

Smart Digital Photo Frame
Data Display Panel
Electronic Signage

Specifications

Specification	Parameter
SoC	ESP32-S3R8 @Dual-core Xtensa LX7, up to 240MHz
Flash	16MB
PSRAM	8MB
Wi-Fi	2.4 GHz Wi-Fi
Display	4" E-Paper (E6 Full-Color) ED2208-DOA (EL040EF1), Resolution 400x600
Input Power	USB Type-C DC 5V
Battery Capacity	1250mAh
Audio Codec	ES8311
Microphone	MEMS Microphone, ES7210 Audio ADC, Integrated AEC Circuit
Speaker	1W @ 8Ω 2520 Speaker, AW8737A Audio Amplifier
Temp/Humidity	SHT40
Expandable Storage	microSD
RTC	RX8130CE
User Buttons	3x User Buttons + 1x Power Button (ON/OFF/RESET/BOOT)
Power Consumption	Standby: 92.53uA Full Load: 211.97mA
Product Size	70.8 x 103.9 x 8.5mm
Product Weight	73.3g
Package Size	120.0 x 80.0 x 23.0mm
Gross Weight	93.4g

Learn

Power On/Off

Power On / Restart: Press the power button once
Power Off: Press the power button twice in quick succession

Download Mode

To flash firmware, connect the device to a computer via a USB Type-C cable, then press and hold the side reset button to enter download mode and wait for the flashing process to complete.

Schematics

PaperColor Schematics PDF

1/3

PinMap

E-Paper

ESP32S3R8	G15	G13	G44	G43	G11	G12
EL040EF1	SPI_CLK	SPI_MOSI	EINK_CS	EINK_DC	EINK_BUSY	EINK_RST

M5PM1	PYG0
EL040EF1	PY_EPD_EN

KEY

ESP32S3R8	G1	G9	G10
KEY	USER_KEY1	USER_KEY2	USER_KEY3

IR

ESP32S3R8	G48
IR	IR_TX

RGB

ESP32S3R8	G21
RGB LED	RGB

Audio

ESP32S3R8	G2	G3
ES8311 (0x18)	AUDIO_I2C_SCL	AUDIO_I2C_SDA
ES7210 (0x40)	AUDIO_I2C_SCL	AUDIO_I2C_SDA

ESP32S3R8	G42	G41	G40	G39	G38
ES8311	I2S_MCLK	I2S_LRCK	I2S_BCLK		I2S_DSDIN
ES7210	I2S_MCLK	I2S_LRCK	I2S_BCLK	I2S_SDOUT

ESP32S3R8	G45
ES8311 & ES7210 Power (CODEC_3V3_L3B)	AUDIO_PWR_EN

ESP32S3R8	G46
AW8737A	SPK_EN

G46(SPK_EN): Speaker amplifier enable
G45(AUDIO_PWR_EN): Power supply for audio codec chips and microphone

RTC

ESP32S3R8	G7	G3	G2
RX8130CE (0x32)	RTC_IRQ	SYS_SDA	SYS_SCL

SHT40

ESP32S3R8	G3	G2
SHT40 (0x44)	SYS_SDA	SYS_SCL

microSD

ESP32S3R8	G47	G15	G13	G14
microSD	CS	SPI_CLK	SPI_MOSI	SPI_MISO

HY2.0-4P

HY2.0-4P	Black	Red	Yellow	White
PORT.A	GND	5V	G4	G5

M5PM1

ESP32S3R8	G3	G2
M5PM1 (0x6e)	SYS_SDA	SYS_SCL

M5PM1	DCDC3V3_EN_PP	LDO3V3_EN_PP	BOOST5V_EN_PP
3V3_L2	PY_MPWR_EN
RGB LED		PY_RGB_PWR_EN
Grove			PY_GROVE_OUT_EN

DCDC3V3_EN_PP(PY_MPWR_EN): 3V3_L2 power layer switch
LDO3V3_EN_PP(RTCPY_RGB_PWR_EN_IRQ): RGB LED power supply switch
BOOST5V_EN_PP(PY_GROVE_OUT_EN): Grove expansion interface power direction control

M5PM1	PYG0	PYG2	PYG4	PYG3	PYG1
E-Paper	PY_EPD_EN
RTC		RTC_IRQ
microSD			PY_SD_DET_EN	PY_SD_PWR_EN	CARD_DEC

PYG0(PY_EPD_EN): Enable e-paper display power supply
PYG2(RTC_IRQ): RTC interrupt signal
PYG3(PY_SD_PWR_EN): microSD module power supply
PYG4(PY_SD_DET_EN): microSD detection enable, pull-up enabled
PYG1(CARD_DEC): microSD card insertion detection

Model Size

PaperColor Model Size PDF

Datasheets

Softwares

Arduino

Protocol

M5PM1 Power Management IC

PlatformIO

[env:m5stack-papercolor]
platform = espressif32 @ 6.12.0
board = esp32s3box
framework = arduino
board_build.partitions = default_16MB.csv
board_upload.flash_size = 16MB
board_upload.maximum_size = 16777216
board_build.arduino.memory_type = qio_opi
monitor_speed = 115200
build_flags =
    -DESP32S3
    -DBOARD_HAS_PSRAM
    -DCORE_DEBUG_LEVEL=5
    -DARDUINO_USB_CDC_ON_BOOT=1
    -DARDUINO_USB_MODE=1
    
lib_deps =
    M5Unified = https://github.com/m5stack/M5Unified
    M5GFX = https://github.com/m5stack/M5GFX
    M5PM1 = https://github.com/m5stack/M5PM1

Easyloader

Easyloader	Download	Note
PaperColor Factory Firmware Easyloader	download	/

Other

Video

PaperColor Product Introduction and Feature Demonstration