Faces Kit

SKU:K005

Description

Faces Kit is a collection of functional panels. The kit includes three commonly used panels: "GameBoy (gaming keyboard)", "Calculator (numeric keypad)", and "QWERTY (full keyboard)". A MEGA328 processor is integrated inside, working in slave mode via the I2C communication protocol (0x08). Choose any of these three panels as needed to enable human–machine interaction between the user and M5Core.

Tutorial

UIFlow

This tutorial shows you how to control the Gray device through the UIFlow graphical programming platform

UiFlow2

This tutorial shows you how to control the Gray device through the UiFlow2 graphical programming platform

Arduino IDE

This tutorial shows you how to program and control the Gray device via the Arduino IDE

Features

ESP32-based development
Built-in gyroscope, accelerometer, and magnetometer
Integrated speaker, buttons, LCD screen, and 1 × power/reset button
TF-card slot (expandable up to 16 GB)
M5-Bus female connector
Magnetic charging design
Built-in lithium battery
Extensible pins and interfaces
Development Platform
- UiFlow1
- UiFlow2
- Arduino IDE
- ESP-IDF
- PlatformIO

Includes

1 × Gray
1 × FACES Charging Base
1 × FACES Lanyard
1 × Panel Sticker
3 × FACES Keyboards (GameBoy, Calculator, QWERTY)
8 × Dupont Cables
6 × M3 × 12 mm Screws
1 × Hex Key L-Shape
1 × USB Type-C Cable (100 cm)

Applications

Handheld game console
Calculator
Data-entry peripheral
IoT controller

Specifications

Main Control Resources	Parameter
SoC	ESP32-D0WDQ6@Dual-core processor, Main frequency 240MHz
DMIPS	600
SRAM	520KB
Flash	16MB (Old version 4MB)
Wi-Fi	2.4 GHz Wi-Fi
Input Voltage	5V@500mA
Host Interface	USB Type-C x 1, GROVE (I2C+I/O+UART) x 1
Core Base Interface	PIN (G1, G2, G3, G16, G17, G18, G19, G21, G22, G23, G25, G26, G35, G36)
IPS Screen	2 inch, 320x240 Colorful TFT LCD, ILI9342C, Max brightness 853nit
Speaker	1W-0928
Buttons	Custom buttons x 3
Antenna	2.4G 3D antenna
Lithium Battery	600mAh@3.7V
MEMS	MPU6886+BMM150
2.4G Antenna	Proant 440
Operating Temperature	0 ~ 60°C
Case Material	Plastic (PC)
Product Size	58.2 x 54.2 x 18.7mm
Product Weight	94.0g
Package Size	120.0 x 85.0 x 65.0mm
Gross Weight	264.0g

Learn

BMM150 Magnetic Interference

Products with magnets may interfere with the BMM150 magnetic sensor, resulting in abnormal readings. When used with M5 main controllers that contain magnets, please remove the magnet and avoid placing the BMM150 near strong magnetic fields.

Power On/Off

Power On: Press the red power button on the left once
Power Off: Double-click the red power button on the left

Note: By default, the device cannot be powered off while it is powered via USB.

Upgrade

Schematics

1/4

PinMap

Mega328 ISP download-interface pin definition

ESP32 ADC/DAC

ADC1	ADC2	DAC1	DAC2
8 channels	10 channels	2 channels	2 channels
G32-39	G0/2/4/12-15/25-27	G25	G26

HY2.0-4P

HY2.0-4P	Black	Red	Yellow	White
PORT.A	GND	5 V	G21	G22
PORT.B	GND	5 V	G26	G36
PORT.C	GND	5 V	G16	G17

IP5306 Charging/Discharging Voltage Parameters

Charging	Discharging
0.00 ~ 3.40 V → 0 %	4.20 ~ 4.07 V → 100 %
3.40 ~ 3.61 V → 25 %	4.07 ~ 3.81 V → 75 %
3.61 ~ 3.88 V → 50 %	3.81 ~ 3.55 V → 50 %
3.88 ~ 4.12 V → 75 %	3.55 ~ 3.33 V → 25 %
4.12 ~ / → 100 %	3.33 ~ 0.00 V → 0 %

M5-Bus

FUNC	PIN	LEFT	RIGHT	PIN	FUNC
	GND	1	2	G35	ADC
	GND	3	4	G36	ADC
	GND	5	6	RST	EN
MOSI	G23	7	8	G25	DAC/SPK
MISO	G19	9	10	G26	DAC
SCK	G18	11	12	3V3
RXD0	G3	13	14	G1	TXD0
RXD2	G16	15	16	G17	TXD2
Int SDA	G21	17	18	G22	Int SCL
GPIO	G2	19	20	G5	GPIO
I2S_SK	G12	21	22	G13	I2S_WS
I2S_OUT	G15	23	24	G0	I2S_MK
	HPWR	25	26	G34	I2S_IN
	HPWR	27	28	5V
	HPWR	29	30	BAT

For more information on pin allocation and remapping, please refer to the ESP32 datasheet.

Datasheets

Softwares

Arduino

UiFlow1

Faces Kit UiFlow1 Quick Start

UiFlow2

Faces Kit UiFlow2 Quick Start

USB Driver

Click the links below to download the driver that matches your operating system. Two driver chip versions exist: CP210X (for CP2104 versions) and CP34X (for CH9102 versions). After unzipping, choose the installer matching your OS bitness. (If unsure which USB chip your device uses, install both drivers. CH9102_VCP_SER_MacOS v1.7 may report an error during installation, but the driver is actually installed—just ignore the message.)

Driver Name	Applicable Chip	Download
CP210x_VCP_Windows	CP2104	Download
CP210x_VCP_MacOS	CP2104	Download
CP210x_VCP_Linux	CP2104	Download
CH9102_VCP_SER_Windows	CH9102	Download
CH9102_VCP_SER_MacOS v1.7	CH9102	Download

MacOS Port Selection

Two ports may appear in macOS; select the port named wchmodem.

Easyloader

Easyloader	Download	Note
Faces Kit Factory Firmware Easyloader	download	/

GameBoy Keyboard

If you want to play classic games with M5Core, the GameBoy panel paired with M5Core is the perfect solution. Simply upload a game-emulator program to M5Core and connect the GameBoy panel. Connection diagram:

ESPTool flashing tutorial: gameboy_burn_a_nes_game

Click here to flash a sample game with one click

The other two panels (Calculator keyboard and full keyboard) can be used in applications requiring data entry or complex control. When replacing panels, it is recommended to remove the M5Core first and then disassemble the panel to reduce difficulty.

Others

Key string values

Key	AC	M	%	÷	0-9	X	-	+	=	+/-	.
Val	A	M	%	/	0-9	*	-	+	=	`	.

ESP32 Chip	GPIO23	GPIO19	GPIO18	GPIO14	GPIO27	GPIO33	GPIO32	GPIO4
ILI9342C	MOSI/MISO	/	CLK	CS	DC	RST	BL
TF Card	MOSI	MISO	CLK					CS

Key Int Values (Int values are the ASCII value of each key)

Key	AC	M	%	÷	0-9	X	-	+	=	+/-	.
Val	65	77	37	47
48-57	42	45	43	61	96	46

Video

Faces Kit Factory Firmware Introduction

Case Description: This example runs the default FACES keyboard input test program. Reboot and select from the program list to switch between different panel test items.

Version Change

Release Date	Product Change
2017.12	Initial release
2019.6	MPU9250 changed to MPU6886 + BMM150
2019.7	TN screen changed to IPS screen

Note: Devices with 2018.2A PCB version do not support C2C (Type-C to Type-C) connections or PD power supply.