OpenDTU Hoymiles DIY Kit - ESP32 + Display + NRF24L01+ Module + Socket + Cable

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 2.4GHz 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 NRF24L01+ radio module: HM-300-1T, HM-350-1T, HM-400-1T, HM-600-2T, HM-700-2T, HM-800-2T, HM-1000-4T, HM-1200-4T, HM-1500-4T

Other inverters supported by OpenDTU: Solenso SOL-H350, Solenso SOL-H400, Solenso SOL-H800, TSUN TSOL-M350*, TSUN TSOL-M800*, TSUN TSOL-M1600*, E-Star HERF-800, E-Star HERF-1600, E-Star HERF-1800

*Note about TSUN compatibility: Compatibility with OpenDTU is most likely related to the inverter serial number. Current evidence suggests that TSUN inverters with a serial number starting with "11" are supported, while inverters with a serial number starting with "10" are not supported.

The optionally 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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This offer contains different variants to choose from:

Set + OpenDTU Firmware = ESP32 DevBoard incl. OpenDTU Firmware + NRF24L01+ + Socket + 10cm jumper cable

Set without firmware = ESP32 DevBoard + NRF24L01+ + Socket + 10cm jumper cable

only ESP32 DevBoard = only ESP32 Board

only NRF24L01+ & Socket = only radio module & Socket

only NRF24L01+ = only radio module

only NRFL01 socket = only socket

only 0.96 inch OLED display = only 0.96 inch OLED display blue

only 10cm cable = only 10cm 8PIN + 4PIN 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 NRF24L01+:

Model: NRF24L01+

2.4Ghz radio module

Frequency range: 2400 - 2525 MHz

Radio channels: 6

Operating voltage: 1.9V - 3.6V

Operating current average: 12.5mA

Standby consumption: 32µA

Wakeup time: 130µS

Transmission rate: up to 2Mbps (2Mbps/1Mbps/250Kbps)

Antenna: integrated in the PCB board

Size: 28.4 x 15 x 5.6 mm

PIN spacing: 2.54 mm

Operating temperature -40 - 85°C

Automatic transmission of aborted packets

SPI interface for microcontrollers like Arduino Raspberry Pi

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:

Display + Set + OpenDTU Firmware Set + OpenDTU Firmware style="padding: 5px 8px; border: 1px solid rgb(204, 204, 204); border-image: none; display: inline-block; box-sizing: border-box;">Set without firmware only ESP32 DevBoard only Socket NRF24L01+ only NRFL01 socket only inches OLED display only 10cm jumper cable