Station-485

SKU: K123

Description

Station-485 is a versatile industrial-grade programmable embedded controller. It uses the Espressif ESP32 as the main control chip, integrates a Wi-Fi solution, and is equipped with a dual-core low-power Xtensa® 32-bit LX6 microprocessor with a clock speed of up to 240MHz. It comes with 16MB FLASH and integrates a 240 x 135 1.14-inch full-color HD IPS display panel, physical button panel, rich peripherals, and two sets of six expansion interfaces. It also features low-power sleep/timed wake-up functionality.

It supports multiple power supply methods, including USB Type-C, PWR485, and an internal rechargeable battery (battery socket reserved on the board). The board integrates a high-power-density fully integrated boost DC/DC converter SCT12A0DHKR, ensuring stability in complex application scenarios.

This controller is suitable for various application scenarios such as industrial field control, smart buildings, multi-channel data acquisition nodes, and developer prototyping.

Features

Interactive Design:
- 1.14-inch IPS display panel
- 3 programmable physical buttons
- 1 power button
- 7 programmable RGB LEDs
Power Design:
- Input:
  - Integrated 9~24V to 5V DC/DC SY8303 step-down circuit
  - AXP192 power management chip
- Output:
  - Each interface (5 Grove, 1 USB-A) uses an electronic switch SGM2553D for independent on/off control
  - 6 Grove interfaces use INA3221 for voltage/current monitoring, and USB-A uses INA199 for current monitoring
  - Integrated high-power-density fully integrated boost DC/DC converter SCT12A0DHKR
- Low Power Consumption:
  - Integrated RTC BM8563 for low-power sleep/timed wake-up
Port Design:
- 6 Grove expansion interfaces
  - Port A1/A2 share power and signal pins
  - Port B1/B2/C1/C2 have independent power and signal pins
- PWR485 interface (4-wire VH3.96)
  - RS485
  - 9~24V power input
- USB Type-A is for power output only, with no signal pins
Structural Design:
- DIN rail
- Magnetic
- Wall-mounted
- Screws
- Cable ties
Development Platform
- UiFlow1
- UiFlow2
- Arduino IDE
- ESP-IDF
- Platform.IO

Includes

1 x Station-485
1 x USB Type-C cable (100cm)
1 x Hex key

Applications

IoT controller
Multi-channel data acquisition
IoT product prototyping
DIY projects

Specifications

Main Control Resources	Parameters
ESP32-D0WDQ6-V3	240MHz dual-core, 600 DMIPS, 520KB SRAM, Wi-Fi
Flash	16MB
USB Power Supply	5V@1A
RS485 Power Supply	9~24V@1A
Host Interface	Type-C x 1, GROVE (I2C+I/O+UART) x 6, Full-Size USB Type-A (OUTPUT), PWR485
LED	SK6812 x 7
Buttons	Power button, physical buttons x 3
IPS LCD Screen	1.14"@240 x 135 ST7789V2
RTC	BM8563
PMU	AXP192
Voltage/Current Monitor	INA3221 + INA199
USB Chip	CH9102F
TTL-RS485	SP3485
Step-Down Chip	SY8303
DC/DC Boost	SCT12A0DHKR
Power Distribution Switch	SGM2553D
Antenna	2.4G 3D antenna
Operating Temperature	0 ~ 60°C
Base Screw Specification	M2 x 8 hex socket screws
Internal PCB Reserved Interfaces	Battery interface (1.25mm-4P), USB line interface (1.25mm-4P)
Housing Material	ABS+PC
Product Dimensions	88.0 x 65.0 x 35.0mm
Product Weight	63.6g
Package Dimensions	104.0 x 73.0 x 54.5mm
Gross Weight	105.3g

Learn

Power On/Off Operation:
Power On: Click the central power button
Power Off: Long press the central power button for 4 seconds

Schematics

Station-485 Schematics PDF

1/3

PinMap

Button A & Button B & Button C & Power Button

ESP32 Chip	GPIO37	GPIO38	GPIO39
Buttons	BUTTON A	BUTTON B	BUTTON C

Color TFT Screen

Driver Chip: ST7789v2 Resolution: 135 x 240 @1.14"

ESP32 Chip	GPIO5	GPIO15	GPIO18	GPIO19	GPIO23
AXP192 Chip						AXP_LDO3
LCD	CS (Chip Select)	RESET	SCK (SCLK)	RS (Date/Command)	MOSI	LCD_BL

RTC

ESP32 Chip	GPIO21	GPIO22
BM8563	SDA	SCL	INT
AXP192			AXP_PWR

Current/Voltage Monitor

ESP32 Chip	GPIO21	GPIO22	Control Channel
INA3221 (0x40)	SDA	SCL	AXP_GPIO0, AXP_GPIO1
INA3221 (0x41)	SDA	SCL	AXP_GPIO2, AXP_GPIO3, AXP_GPIO4

Internal I2C Connection

ESP32 Chip	GPIO21	GPIO22
AXP192	SDA	SCL
BM8563	SDA	SCL
INA3221	SDA	SCL

PWR485

Chip	GPIO3	GPIO1	GPIO2	(DCDC 9~24V to 5V)	GND
SP3485	TXD	RXD	Send-High Active/Receive-Low Active		GND
SY8303				VIN_12V

Power Management Chip (AXP192)

RTC	LCD BackLight	ESP32-3.3V SK6812, INA3221, CH902F
LDO1	LDO3	DC-DC1

USB to Serial

ESP32 Chip	GPIO3	GPIO1
CH9102F	TXD	RXD

M5Station Port Description

PORT	PIN	Monitoring Port	Remarks:
PORT-A1 (Red)	G32/33 (SDA/SCL)	AXP_GPIO0	I2C
PORT-A2 (Red)	G32/33 (SDA/SCL)	AXP_GPIO0	I2C
PORT-B1 (Black)	G25/35 (OUT/IN)	AXP_GPIO1	DAC/ADC
PORT-B2 (Black)	G26/36 (OUT/IN)	AXP_GPIO2	DAC/ADC
PORT-C1 (Blue)	G14/13 (TX/RX)	AXP_GPIO3	UART
PORT-C2 (Blue)	G17/16 (TX/RX)	AXP_GPIO4	UART

Power Consumption Test

Operating Current (LCD, LED, Wi-Fi On)	Standby Current (LCD, LED On)
161mA	105mA

Model Size

Datasheets

Datasheet
- ESP32
- ST7789v2
- SY8303AIC
- SP3485
- SCT12A0DHKR
- INA3221_CN
- INA199_CN
- SGM2553
- BM8563
- AXP192 datasheet
- AXP192 register

Softwares

Arduino

Station-485 Arduino Library

USB Driver

Click the link below to download the driver for your operating system. After extracting the compressed file, select the installation package corresponding to your operating system's bit version. (CH9102_VCP_SER_MacOS v1.7 may report an error during installation, but it is actually installed successfully. Ignore the error.) If you encounter issues such as timeout or "Failed to write to target RAM" when downloading the program, try reinstalling the device driver.

Driver Name	Applicable Driver Chip	Download Link
CH9102_VCP_SER_Windows	CH9102	Download
CH9102_VCP_SER_MacOS v1.7	CH9102	Download

MacOS Port Selection

In MacOS, there may be two optional ports. Please select the port named wchmodem when using.

Easyloader

Easyloader	Download Link	Remarks
Station-485 Test Easyloader	Download	/

Product Comparison

Station-485	Station-BAT
Equipped with PWR485 (RS485 + Power Input)	Onboard MPU6886, can be equipped with two 18650 batteries (parallel)