Compact DIN rail-mounted energy meter powered by the M5Stamp S3 module for real-time power monitoring and IoT integration

Description

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Description

DinMeter is an embedded development board that adheres to the 1/32DIN standard, featuring a 1.14-inch ST7789 screen and a built-in rotary encoder with buttons for precise knob position recording. Additionally, it includes an RTC circuit, an onboard buzzer, and buttons for device interaction and wake-up alerts. The product is designed to support DC input ranging from 6V to 36V and includes a lithium battery interface and charging circuit to accommodate various power supply needs. The reserved PORT.A and PORT.B interfaces allow for easy expansion of I2C and GPIO devices. This product is suitable for applications such as parameter measurement and detection, smart home control, IoT projects, smart wearables, access control, industrial control, and educational maker projects.

Features

• ST7789v2 screen
• M5StampS3 as the main controller
• Rotary encoder
• Wide voltage input
• Reserved PORTA and PORTB interfaces
• Lithium battery interface (rechargeable)
• 1/32DIN standard (45 x 22.5mm)
• Development Platform
  • UiFlow2
  • Arduino IDE
  • ESP-IDF
  • PlatformIO

Includes

• 1 x DinMeter
• 1 x Adhesive tape
• 1 x 250mAh polymer lithium battery
• 1 x Silk-screened sticker
• 1 x DC-JACK terminal input (6-36V)
• 1 x Back bracket

Applications

Specifications

Specification	Parameter
SoC	ESP32-S3FN8@Xtensa LX7 dual-core, 240MHz main frequency
Flash	8MB
Wi-Fi	2.4 GHz Wi-Fi
USB	USB OTG, USB Serial/JTAG
Wide Voltage Input Range	6 ~ 36V
Display Driver	ST7789V2
Display Resolution	135 x 240
Charging Current	100mA
Grove Load Capacity	PORT.A Load Capacity: DC 5V/Max:220mA PORT.B Load Capacity: DC 5V/Max:220mA
Standby Current (Battery Powered)	DC 4.2V@38.4uA
Battery Socket Specification	1.25mm-2p
Power Supply Method	USB/DC Power Supply / Battery
Operating Temperature	0 ~ 40°C
Product Size	53.0 x 30.0 x 32.0mm
Product Weight	17.8g
Package Size	136.0 x 93.0 x 23.0mm
Gross Weight	47.0g

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