M5Stack Station ESP32 IoT Development Kit (RS485 Version)

The M5Stack Station ESP32 IoT Development Kit RS485 Version ('M5Station-485') is a multi-purpose industrial-level programmable embedded controller with an Espressif ESP32 SOC, integrated Wi-Fi and BT solution and a dual-core low-power Xtensa® 32-bit LX6 microprocessor with a main frequency up to 240MHz.

The controller has 16M FLASH onboard alongside an integrated 240x135 1.14" full-colour HD IPS display + physical keypad + rich peripherals, two sets of six expansion ports + low-power sleep/wakeup functions.

Users have multiple power supply options including USB Type-C, PWR485 and an external battery (battery socket reserved on board). The integrated high power density boost DC/DC converter SCT12A0DHKR on board ensures the stability of the electrical equipment even in complex applications.

This device is suitable for industrial control, intelligent buildings, multi-channel data acquisition nodes and prototyping applications.

We also stock the battery version of the M5Station.

Interfaces

• 1.14" IPS display
• 3 physical programmable keys
• 1 ON/OFF button
• 7 programmable RGB LEDs

Power Supply

• Input:
  • Integrated 9~24V->5V DC/DC SY8303 Buck circuit
  • AXP192 power management chip
• Output:
  • Each interface (6 Grove, 1 USB-A) is electronically switched on/off by SGM2553D.
  • INA3221 for voltage/current acquisition for Grove interfaces, and INA199 for current acquisition for the USB-A
  • Integrated high power density boost DC/DC converter SCT12A0DHKR
• Low power consumption:
  • Integrated RTC BM8563 to achieve low-power sleep/wakeup function

Port Design

• 6-way Grove expansion interface
  • Port A1/A2 shared the same power and signal pins
  • Port B1/B2/C1/C2 have separate power and signal pins
• PWR485 interface (4-wire - VH3.96)
  • RS485
  • 9~24V power input
• USB Type-A power supply output only, no signal pins

Mechanical Design

• Din rail
• Magnet
• Wall Mount
• Screws
• Ribbon

Programming development

• Supports UIFlow graphical programming platform, scripting, compile-free, cloud push
• Fully compatible with Arduino, ESP32-IDF and other mainstream development platforms
• Support FreeRTOS, with the help of dual-core and multitasking mechanism, efficient organization of task logic, optimize the execution efficiency of the program.

Power Management

• Power on: Click the central power button.
• Power off: Press and hold the central power button for 4 seconds.

Package Contents

• 1x M5Station-485
• 1x Type-C USB cable (100cm)
• 1x HEX Key

Specifications

ESP32-D0WDQ6-V3	240MHz dual-core 600 DMIPS 520KB SRAM Wi-Fi
Flash	16MB
USB powered	5V@1A
RS485 power supply	9~24V@1A
Interface	Type-C * 1 GROVE (I2C+I/0+UART) * 6 Full-Size USB Type-A (OUTPUT) PWR485
LEDs	SK6812 * 7
Pushbuttons	Power Button, Physical Button \ 3
IPS LCD Screen	1.14"@240*135 ST7789V2
RTC	BM8563
PMU	AXP192
Voltage/Current Collector	INA3221 + INA199
USB Chips	CH9102F
Step-Down Chips	SY8303
DC/DC Boost	SCT12A0DHKR
Power Distribution Switch	SGM2553D
Antenna	2.4G 3D Antenna
Operating Temperature	0°C to 60°C
Base Screw Specification	Hexagon socket cup head M2*8 screw
Internal PCB reserved interface	Battery interface (Specification:1.25mm-4P) USB line interface (Specification:1.25mm-4P)
Net Weight	63.1g
Gross Weight	108.1g
Product Dimensions	92 x 64.5 x 35 mm
Package Size	104.5 x 70.5 x 50mm
Case Material	ABS+PC

Resources

• Product Documentation
• M5Station Arduino Library
• Datasheets
  • ESP32
  • ST7789v2
  • SY8303AIC
  • SP3485
  • SCT12A0DHKR
  • INA3221_EN
  • INA199_EN
  • SGM2553
  • BM8563
  • AXP192 datasheet
  • AXP192 register