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

*VAT-free delivery according to Section 12 Paragraph 3 UStG.

Since January 1st, 2023, photovoltaic products have been exempt from VAT due to a funding measure. This means that private individuals receive significant tax relief when purchasing solar products to promote solar energy.

The following requirements must be met:

• My delivery address is in Germany.
• The installation only takes place if the photovoltaic system is installed on or near my private home, apartments as well as public and other buildings that are used for activities serving the public good.
• I confirm that the installed gross output of the photovoltaic system according to the market master data register (MaStR) is or will not be more than 30 kW (peak).
• I am the operator of the photovoltaic system. The ordered goods will not be resold commercially.
• I confirm that the components ordered are used exclusively to use the electricity generated by solar modules for energy management.

By ordering this VAT-exempt product, I confirm that the delivery is VAT-free in accordance with Section 12 Para. 3 UstG and that the requirements for the tax rate of 0% are met. If it subsequently turns out that these requirements were not met contrary to the confirmation (e.g. through an external audit), I agree that the underpaid sales tax will be subsequently invoiced.

Please note that orders with a company address or multiple orders that exceed the maximum order Quantity of 2 pieces will be canceled and the purchase amount will be refunded.

To ensure the smooth process, we ask you to contact us BEFORE purchasing if you have any questions or are unclear. Thank you very much.

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You can find further information in the document from the Federal Ministry of Finance:

https://www.bundesfinanzministerium.de

Search for: Zero tax rate for sales in connection with certain photovoltaic systems

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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 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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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

Technical data 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

Technical data 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

Technical data 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 + OpenDTU Firmware Set Blue without firmware