M5Stack Din Meter with M5StampS3 [Discontinued]

This Din Meter is a 1/32 DIN standard embedded development board featuring a 1.14" ST7789 screen and powered by an M5StampS3 as its main controller. It includes a built-in rotary encoder for precise knob position tracking, an RTC circuit, an onboard buzzer, and buttons below the screen for device interaction and alert notifications. It supports a wide voltage input range of 6-36V DC and has reserved interfaces for a lithium battery and charging circuit to accommodate a variety of projects. Additionally, the reserved PORT A and PORT B interfaces provide the expansion of I2C and GPIO devices. This product is ideal for projects involving parameter measurement and detection, smart home control, IoT projects, smart wearables, access control, and industrial control.

We are now stocking the upgraded version which is available here: M5Stack Din Meter v1.1 with M5StampS3A.

Note: To enter download mode, hold down the G0 button on the StampS3 before powering on, then release it after the power is on.

Power On: The device can be powered on by pressing the "WAKE" button or through an IRQ signal triggered by the RTC timer. After the wake-up signal is triggered, set the hold (G46) pin to high (1) during program initialisation to maintain power; otherwise, the device will re-enter sleep mode.

Power Off: When there is no USB external power supply, this can be achieved by pressing the RST button; or, when there is no USB external power supply, by setting HOLD (GPIO46)=0 in the program to power off the device.

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Lithium Battery Shipping: Due to courier restrictions, this product can only be shipped within the United Kingdom. With this item in your cart your shipping options will be limited and may cost more than our usual rates. Why?

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Features

• ST7789v2 screen
• M5StampS3 as the main control
• Rotary Encoder
• Wide voltage input
• Reserved PORT A and PORT B ports
• Lithium battery interface (Rechargeable)
• 1/32DIN standard (45 x 22.5mm)
• Programming platform: Arduino, UIFlow

Specifications

Resources	Parameters
MCU	ESP32-S3@Xtensa LX7,8M-FLASH,WIFI,OTG\CDC function
Wide Voltage Input Range	6-36V
Screen Driver	ST7789V2
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

Resources

• Product Wiki
• Arduino IDE Tutorial
• UIFlow 2.0 Tutorial

Package Contents

• 1x M5DinMeter
• 1x Adhesive Paper
• 1x 250mAh Battery
• 1x Tag
• 1x DC-JACK terminal input (6-36V)
• 1x Back Brace