OpenDTU Hoymiles DIY Kit Display SSD1306 ESP32 CMT2300A Antenna Cable HMS HMT

Article description:

openDTU / AhoyDTU DIY Kit

This DIY kit is suitable for reading out the data from a Hoymiles inverter.

Communication with the Hoymiles inverters takes place via 868/915MHz radio. It is possible to retrieve the current values ​​such as power, current and daily energy. Setting parameters such as the performance limit via web interface or MQTT.

The following Hoymiles inverters are currently supported by OpenDTU with the CMT2300A radio module: HMS-300-1T, HMS-350-1T, HMS-400-1T, HMS-450-1T, HMS-500-1T, HMS-600-2T, HMS-700-2T, HMS-800-2T, HMS-900-2T, HMS-1000-2T, HMS-1600-4T, HMS-1800-4T, HMS-2000-4T, HMT-1600-4T, HMT-1800-4T, HMT-2000-4T, HMT-1800-6T, HMT-2250-6T

The included OLED display impresses with its high display quality. With a size of approx. 2.44cm, it has a resolution of 128 x 64 pixels. This means that texts and graphics are displayed with a high level of detail and sharpness.

With the I2C connection you can easily integrate the display into your DIY projects. Fully compatible with Arduino, 51 series, MSP430 series, STM32/2, CSR IC, etc.

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Also available as a Set with the NRF24L01+ radio module for Hoymiles HM inverter:

OpenDTU Hoymiles DIY Kit Display SSD1306 ESP32 NRF24L01+ Antenna Socket Cable

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This offer contains different variants to choose from:

Set white + OpenDTU firmware = 0.96" OLED display white + ESP32 DevBoard incl. OpenDTU firmware + CMT2300A + antenna + socket + 10cm jumper cable

Set blue + OpenDTU firmware = 0.96" OLED display blue + ESP32 DevBoard incl. OpenDTU firmware + CMT2300A + antenna + socket + 10cm jumper cable

Set white without firmware = 0.96" OLED display white + ESP32 DevBoard + CMT2300A + antenna + socket + 10cm jumper cable

only 0.96" OLED display white = only display in white

only 0.96" OLED display blue = only display in blue

only ESP32 DevBoard = only ESP32 Board

CMT2300A & only Antenna = only radio module & Antenna

only 10cm cable = 10x jumper cable

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OpenDTU is an open source project and is licensed under the license:

GNU General Public License v2.0

Further information about license, firmware and installation:

https://github.com/tbnobody/OpenDTU

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Important note:

No soldering required. All you have to do is plug the PIN cables together. Please note the Setup instructions for initial commissioning. In particular, the display must be activated with a configuration file.

A QR link or a link to the instructions is included in the form of an A6 flyer.

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It is also possible to install AhoyDTU. However, you have to do this yourself. For more information see link:

https://github.com/lumapu/ahoy

Specs ESP32:

Wi-Fi Type: IEEE 802.11 b/g/n 2.4GHz

Security protocols: WEP/WPA-PSK/WPA2-PSK

Bluetooth: Classic and BLE

ChipSet: ESP-32

Processor: Tensilica LX6 Dual-Core

Memory: 512kB

Memory: 4MB

Clock frequency: 80-240MHz

Operating voltage: 3.3V / 5V

Operating current average: 80mA

Power supply required min. rated power: 500 mA

Interfaces: UART / I2C / SPI / DAC / ADC

Working temperature: -40°C - 85°C

USB-C port

Compatible with Arduino

Compatible with NodeMCU

Compatible with Tasmota

Compatible with many shields/modules

Specs CMT2300A & Antenna:

Model: E49-900MBL-01 CMT2300A

868/915MHz radio module

Frequency range: 850 MHz ~ 930 MHz

max. Transmission power: 20dBm

Communication distance: up to 2.5 km

Operating voltage: 2.6V - 3.6V

Supports low power mode, suitable for battery operation

Data transfer rate from 0.5 kbps to 300 kbps

Operating temperature: -40 to 85°C

Size: 58 x 27 x14 mm

PIN spacing: 2.54 mm

Automatic transmission of aborted packets

SPI interface for microcontrollers like Arduino Raspberry Pi

IPEX interface incl. 4dbi antenna

Specs Display:

OLED display module

Model: SSD1306

Size: 0.96 inch / 2.44cm

Resolution: 128 x 64 pixels

Viewing Angle:> 160°

Supported Platform: 51 Series, MSP430 Series, STM32/2 Series, etc.

Very low power consumption: 0.04 W in normal operation

Wide voltage support: DC 3.3V-5V

Working temperature: -30°C - 80°C

Communication method: IIC, only 2 I/O ports

Backlight: OLED self-lighting, no backlight required

Pin definition:

1. VCC: 3.3-5V

2. GND: ground

3. SCL: Serial Clock

4. SDA: Serial Data

More information:

More:

New goods available immediately

Set variants:

Set white or blue + OpenDTU firmware only 0.96" OLED display white or Blue ESP32 DevBoard only only CMT2300A & antenna only 0.96 inch OLED display only 10cm jumper cable