DinMeter

SKU: K134

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.

Tutorial

Arduino IDE

This tutorial will guide you on how to program and control the StampS3 device using the Arduino IDE.

UiFlow2

This tutorial will guide you on how to control the StampS3 device using the UiFlow2 graphical programming platform.

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
- Platform.IO

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

Smart home detection and control systems
Access control systems
Industrial control
Maker and DIY projects

Specifications

Specification	Parameter
MCU	ESP32-S3@Xtensa LX7, 8M-FLASH, WIFI, USB-OTG function
Wide voltage input range	6-36V
Screen driver	ST7789V2
Screen resolution	135 x 240
Charging current	100mA
Grove load capacity	PORT-A load capacity: DC5V/Max:220mA PORT-B load capacity: DC5V/Max:220mA
Standby current (battery-powered standby current)	DC4.2V/38.4uA
Battery holder specification	1.25mm-2p
Power supply methods	USB/DC power supply/battery
Operating temperature	0 ~ 40°C
Product dimensions	53.0 x 30.0 x 32.0mm
Product weight	17.8g
Package dimensions	136.0 x 93.0 x 23.0mm
Gross weight	47.0g

Learn

Power On/Off Operation

Power On: The device can be woken up by pressing the "WAKE" button or by an RTC-triggered IRQ signal. After the wake-up signal is triggered, the program initialization must set the hold(G46) pin to high (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, or set HOLD(GPIO46)=0 in the program to power off.

Download Mode

To enter download mode, hold the G0 button on the StampS3 before powering on, then release it after powering up.

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

Din Size Standard

Schematics

DinMeter Schematics PDF

1/1

PinMap

Port A

Port B

RTC8563&ENCODER

ST7789V2

Model Size

Datasheets

Softwares

Arduino

DinMeter Example Code

Easyloader

Easyloader	Download Link	Notes
DinMeter User Demo Easyloader	download	/

Video

DinMeter Introduction and Applications