DinMeter

SKU:K134

Description

Din Meter is a1/32 DIN standard embedded development board equipped with a 1.14-inch ST7789 screen and powered by an M5StampS3 as its main controller. It features a built-in rotary encoder for precise knob position tracking. Additionally, it includes an RTC circuit, an onboard buzzer, and buttons below the screen for device interaction and alert notifications. In terms of power supply, the design supports a wide voltage input range of 6-36V DC and has reserved interfaces for a lithium battery and charging circuit to cater to various needs. Moreover, reserved PORTA and PORTB interfaces facilitate the expansion of I2C and GPIO devices. This product is suitable for applications in parameter measurement and detection, smart home control, Internet of Things (IoT) projects, smart wearables, access control, industrial control, and educational maker projects.

Tutorials & Quick Start

Arduino IDE

This tutorial will show you how to program and control Din Meter devices through Arduino IDE

UIFlow2.0

This tutorial will show you how to control the Din Meter device through the UIFlow2.0 graphical programming platform

Features

ST7789v2 screen
M5StampS3 as the main control
Rotary Encoder
Wide voltage input
Reserved PORTA and PORTB ports
Lithium battery interface (Rechargeable)
1/32DIN standard (45*22.5mm)
Programming platform
- Arduino
- UIFlow

Includes

1x M5DinMeter
1x ADHESIVE PAPER
1x 250mAh Battery
1x tag
1x DC-JACK terminal input (6-36V)
1x Back brace

Applications

Smart home detection and control system
Access Control System
Industrial Control
Makers and DIY projects

Specifications

Resources	Parameters
MCU	ESP32-S3@Xtensa LX7,8M-FLASH,WIFI,OTG\CDC function
Wide Voltage Input Range	6-36V
Screen Driver	ST7789V2
Screen Resolution	135*240
Charge Current	100mA
Grove Carries Capacity	PORT-A Carrying capacity :DC5V/Max:220mA PORT-B Carrying capacity :DC5V/Max:220mA
standby current(Battery powered standby current)	DC4.2V/38.4uA
Battery seat specifications	1.25mm-2p
Power Supply Mode	USB/DC Power supply/Battery
Operating Temperature	0-40°C
Product Size	53 x 32 x 30mm
Package Size	137 x 93 x 24mm
Product Weight	17.6g
Package Weight	46g

Learn

Power On/Off Operations

Power On: The device can be woken and started by pressing the "WAKE" button or by the IRQ signal triggered by the RTC timer. After triggering the wake-up signal, the program initialization must set the HOLD (G46) pin to a high level (1) to maintain power; otherwise, the device will re-enter sleep mode.
Power Off: When there is no external USB power supply, press the RST button to power off. Alternatively, during program execution and without USB power supply, set HOLD (GPIO46) = 0 to shut down the power.

Download Mode

To enter download mode, press and hold the G0 button on the StampS3 before powering it on. Release the button after the device is powered.

Power Supply Methods | Three power supply methods: USB/DC/BAT

DIN Standard Dimensions

Schematics

DinMeter Schematics PDF

PinMap

Port A

Port B

RTC8563&ENCODER

ST7789V2

Model Size

Datasheets

Softwares

Arduino

M5DinMeter-UserDemo

Easyloader

Easyloader	Download Link	Notes
DinMeter User Demo Easyloader	download	/

Video

M5DinMeter Introduction and application