M5Stack M5Stamp PLC Controller with M5StampS3
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M5Stack M5Stamp PLC Controller with M5StampS3
StamPLC is an IoT programmable logic controller designed for industrial automation and remote monitoring. The product is based on the StampS3A control module, which not only delivers powerful processing capabilities but also provides efficient wireless connectivity. In terms of control, StamPLC offers 8 opto-isolated digital inputs and 4 relay outputs (supporting both AC and DC loads), along with a GPIO.EXT port and 2 Grove interfaces, making the integration of various sensors and actuators both simple and reliable. Meanwhile, through the onboard PWR-CAN and PWR-485 interfaces, the device can be seamlessly integrated into industrial fieldbus networks, enabling remote data transmission and centralized control. For human-machine interaction, the product features a 1.14-inch color display, a RESET/BOOT button, 3 user buttons, and a buzzer, which facilitate real-time parameter configuration and status monitoring, and can alert users in the event of anomalies. To withstand harsh industrial environments, StamPLC supports a wide voltage input (DC 6–36V) and is designed for DIN rail mounting to ensure secure installation; the built-in Micro SD card slot further facilitates data storage and firmware updates. Additionally, its environmental monitoring system integrates an LM75BDP temperature sensor and an INA226AIDGSR voltage/current sensor for real-time feedback on device operation, while the RTC (RX8130CE) module ensures accurate time synchronization and log recording. The factory firmware automatically uploads data to M5’s EZDATA cloud platform, generating monitoring pages and offering users convenient remote cloud access and control. This product is suitable for industrial automation, remote monitoring, smart manufacturing, and other applications.
Features
- StampS3A Control Module (ESP32-S3FN8)
- EZData Cloud Monitoring
- 8 Opto-isolated Digital Inputs
- 4 Relay Outputs (AC/DC)
- 1.14-inch Color Display (ST7789v2)
- PWR-CAN & PWR-485 Interfaces
- Wide Voltage Input (DC 6–36V)
- Voltage/Current Sensor
- Internal Temperature Sensor
- User Buttons
- Micro SD Card Slot
- DIN Rail Mounting
- Buzzer
- Grove Interface
- RTC Module
- Development Platform
UIFlow 2.0
Arduino IDE
ESP-IDF
Includes
- 1 x StamPLC
- 4 x Mounting Accessories
- 4 x Screw Clip Fasteners
Applications
- Industrial Automation and Remote Control
- Distributed Control Systems
- Smart Energy Management
- Smart Manufacturing
Specifications
| Specification | Parameter |
|---|---|
| Control Module | StampS3A Control Module, based on ESP32-S3FN8, with 8MB Flash, 2.4GHz Wi-Fi |
| FLASH | 8MB |
| Digital Inputs | 8 opto-isolated digital inputs, Input voltage range: DC 5~36V |
| Digital Outputs | 4 relay outputs |
| Relays | AC – 5A @ 250V DC – 5A @ 28V |
| DC Power Supply | Supports wide voltage input of DC 6–36V @ 1A DC Power Connector: DC5521 (female, 5.5 x 2.1mm, center positive, outer negative) |
| Expansion Interfaces | GPIO.EXT interface, 2 Grove interfaces |
| Communication Interfaces | Onboard PWR-CAN and PWR-485 interfaces |
| PWR-CAN Interface | XT30(2+2)PW-M |
| PWR-485 Interface | HT3.96-4P |
| Display | 1.14-inch color display (135×240 resolution), driven by ST7789v2 chip |
| Interactive Controls | 1 RESET/BOOT button, 3 user buttons, buzzer |
| Data Storage | Built-in Micro SD card slot |
| Sensors | LM75 temperature sensor, INA226 voltage/current sensor, RTC (RX8130CE) |
| IO Port Load Capacity | 2×8 connector maximum load: DC-4.76V @ 700mA Grove port load test: DC-4.81V @ 700mA |
| Power Consumption | Standby current: (5V supply) DC-5V @ 21.60mA, (12V supply) DC-12V @ 15.22mA Operating current: (5V supply) DC-5V @ 93.89mA, (12V supply) DC-12V @ 47.84mA |
| Installation Method | DIN rail mounting |
| Operating Temperature | 0–40°C |
| Product Size | 72.0 × 80.0 × 33.4mm |
| Product Weight | 139.4g |
| Packaging Size | 102.0 x 94.0 x 37.0mm |
| Gross Weight | 163.7g |
Schematics
Pinmap
PWR-485 & PWR-CAN
| StampS3A | G42 | G43 | G0 | G39 | G46 |
|---|---|---|---|---|---|
| PWR-CAN | CAN_TX | CAN_RX | |||
| PWR-485 | RS485_TX/BOOT | RS485_RX | RS485_DIR |
RGB & User Buttons A/B/C
- Controlled via PI4IOE5V6408 (0x43)
| StampS3A | G15 | G13 | G14 | G3 |
|---|---|---|---|---|
| PI4IOE5V6408 | SCL | SDA | INT | RST |
| PI4IOE5V6408 | P6 | P5 | P4 | P2 | P1 | P0 |
|---|---|---|---|---|---|---|
| RGB | R | G | B | |||
| Button | KEYA | KEYB | KEYC |
Micro SD Card Slot
| StampS3A | G9 | G10 | G7 | G8 |
|---|---|---|---|---|
| Micro SD | MISO | CS | SCK | MOSI |
Sensor
| StampS3A | G15 | G13 | G14 |
|---|---|---|---|
| INA226AIDGSR | SCL | SDA | INT |
| LM75BDP | SCL | SDA | INT |
| RX8130CE | SCL | SDA | INT |
LCD
| StampS3A | G8 | G7 | G6 | G12 | G3 | PI4IOE5V6408_P7 |
|---|---|---|---|---|---|---|
| LCD | MOSI | SCK | RS | CS | RST | LCD_BL |
Buzzer
| StampS3A | G44 |
|---|---|
| Buzzer | BUZZER_PWM |
Relays and Optocouplers
- Controlled via AW9523B (0x59)
| StampS3A | G15 | G13 | G14 | G3 |
|---|---|---|---|---|
| AW9523B | SCL | SDA | INT | RST |
- Relay Control
| AW9523B | P0_0 | P0_1 | P0_2 | P0_3 |
|---|---|---|---|---|
| Relay | RLY_DRV1 | RLY_DRV2 | RLY_DRV3 | RLY_DRV4 |
- Optocoupler Output
| AW9523B | P0_4 | P0_5 | P0_6 | P0_7 | P1_4 | P1_5 | P1_6 | P1_7 |
|---|---|---|---|---|---|---|---|---|
| EL3H4 | SYS_IN1 | SYS_IN2 | SYS_IN3 | SYS_IN4 | SYS_IN5 | SYS_IN6 | SYS_IN7 | SYS_IN8 |
- Optocoupler Input
| EL3H4 | Description |
|---|---|
| EXCOM_IN1 | External Input Signal 1 |
| EXCOM_IN2 | External Input Signal 2 |
| EXCOM_IN3 | External Input Signal 3 |
| EXCOM_IN4 | External Input Signal 4 |
| EXCOM_IN5 | External Input Signal 5 |
| EXCOM_IN6 | External Input Signal 6 |
| EXCOM_IN7 | External Input Signal 7 |
| EXCOM_IN8 | External Input Signal 8 |
| EXCOM_COM | Common Terminal |
PORT.A & PORT.C
- PORT.A
| HY2.0-4P | Black | Red | Yellow | White |
|---|---|---|---|---|
| PORT.A | GND | 5V | SDA | SCL |
| StampS3A | GND | 5V | G2 | G1 |
- PORT.C
| HY2.0-4P | Black | Red | Yellow | White |
|---|---|---|---|---|
| PORT.C | GND | 5V | UART_TX | UART_RX |
| StampS3A | GND | 5V | G5 | G4 |
Model Size
Effective Date: March 27, 2025
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