M5Stack M5Stamp PLC Controller with M5StampS3
📦 Location of the warehouse: China
Free shipping for you
Free Shipping from 30€ in Germany, 50€ in the EU!
Trustpilot rating: 4.4/5.0
Thank you for your support - rate us on Trustpilot!
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
At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 60 days of the shipment date.
1. Warranty Disclaimer
Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.
2. Warranty Policy
Warranty Period
The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.
Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.
If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.
After the warranty period, support may still be available at a reasonable fee.
Warranty Exclusions
The warranty does not apply in the following cases:
- The product is beyond the 12-month warranty period.
- Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
- Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
- Unauthorized repair attempts by the customer.
- The product is not defective but has been opened and is non-returnable by policy.
3. Returns & Refunds
If you're not satisfied with your purchase, you may be eligible for a return or exchange:
- Return for Refund: Within 15 days of receipt (unopened).
- Return for Replacement: Within 30 days of receipt (damaged or defective).
- Exchange Window: Up to 30 days from receipt.
Please email us at info@openelab.io for a return authorization before sending anything back.
Return Conditions
- Items must be in original, clean, and mint condition with packaging intact.
- Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
- Include the receipt, a brief note with your name, order number, and reason for return.
Shipping & Fees
- Customers are responsible for return shipping to our warehouses in Europe, the US, or China.
- Refunds may be subject to additional shipping fees unless the return is due to our error.
- A flat €8 shipping fee will be deducted for returned items that originally qualified for free shipping.
Payment Platform Fees
For refunds processed through third-party platforms such as PayPal or Braintree, a standard 3.5% service fee may be deducted to cover payment processing costs.
