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Opendtu Hoymiles DIY Kit Display SSD1306 ESP32 NRF24L01+ Antenne Socket Kabel PV

Opendtu Hoymiles DIY Kit Display SSD1306 ESP32 NRF24L01+ Antenne Socket Kabel PV

Umsatzsteuerfreie Lieferung nach § 12 Abs. 3 UstG
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In stock - Delivery time 1-3 working days

The following requirements must be met:

  • My delivery address is in Germany.
  • The installation will only take place if the photovoltaic system is installed on or near my private residence, apartments and public and other buildings that are used for activities serving the common good.
  • I confirm that the installed gross output of the photovoltaic system is or will be no more than 30 kW (peak) according to the Market Master Data Register (MaStR).
  • 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 utilize the electricity generated by solar modules for energy management.
  • I expressly confirm that all the information I have provided is true. I am aware that I am fully liable for any false statements.

*VAT-Free delivery according to Section 12 (3) UStG.

Since January 1, 2023, photovoltaic products have been freed from VAT based on a funding measure. As a result, private individuals receive significant tax relief when buying solar products to promote solar energy.

The following requirements must be met:

  • My delivery address is located in Germany.
  • The installation is only carried out if the photovoltaic system is installed on or near my private apartment, apartments as well as public and other buildings that are used for the common good. Margin-Left: -1.5EM; "> I confirm that the installed gross performance of the photovoltaic system according to the market master data register (mastr) is no more than 30 kW (peak). -1.5em; "> I am the operator of the photovoltaic system. The ordered goods are not resold.
  • I confirm that the components ordered only serve to use the electricity generated with solar modules for energy management. < /Li>

By ordering this VAT, I confirm that the delivery takes place in accordance with Section 12 (3) UStG free of VAT and the requirements for the tax rate of 0% are met. If it turns out afterwards that these requirements do not template contrary to the confirmation, I agree that the insufficient sales tax will be invoiced afterwards. The missing VAT amount is then due immediately.

Please note that orders with company address or multiple orders that exceed the maximum order quantity 2 pieces are canceled and the purchase amount is reimbursed.

For the smooth process, we ask you to consult questions or ambiguities before buying. Thank you.

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

steuersatz für Umsätze im Zusammenhang mit bestimmten Photovoltaikanlagen

Article description:

Opendtu / Ahoydtu Diy Kit

This DIY KIT is suitable for reading the data of a hymile inverter.

Communication with the Hymiles interverters takes place via 2.4GHz via radio. It is possible to access current values ​​such as power, electricity, daily energy. Setting parameters such as the performance limit via web interface or MQTT.

The following Hymiles Referees 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

Further inverter 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 on TSUN compatibility: The compatibility with Opendtu is most likely related to the serial number of the inverter. Current findings indicate that TSUN inverters are supported with a serial number that begins with "11", while inverter is not supported with a serial number that begins with "10".

The optionally contained OLED Dispaly impresses with a high quality of representation. With the size of approx. 2.44cm, it has a resolution of 128 x 64 pixels. This shows texts and graphics with a high level of detail and sharpness.

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

Opendtu is an open source project and is under the license:

GNU General Public License V2.0

Further information on license, firmware and installation:

Important NOTE:

No soldering required. Only the PIN cables have to be plugged together. Please note the facility instructions for initial commissioning. The display in particular must be activated with a configuration file.

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

It is also possible to install Ahoydtu. However, this must be carried out itself. For more information, see link:

Technical data ESP32:

Wi-Fi type: IEEE 802.11 B/g/n 2.4GHz

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

Bluetooth: Classic and BLE

Chipset: ESP-32

Processor: Tensilica LX6 dual core

RAM: 512KB

Storage: 4MB

Tact frequency: 80-240MHz

Operating voltage: 3.3V / 5V

Operating current average: 80mA

Power supply required min. Nominal power: 500 mA

Interfaces: UART / I2C / SPI / DAC / ADC

Work temperature: -40 ° C - 85 ° C

Micro USB connection

Compatible with Arduino

Compatible with Nodemcu

Compatible with Tasmota

Compatible with many Shields/modules

Technical data NRF24L01+ & Antenne:

Model: NRF24L01+

2.4GHz radio module

Frequency range: 2400 - 2525 MHz

Radio channels: 6

Max. Single performance: 20dbm

Operating voltage: 1.9V - 3.6V

Max. Power consumption transmission mode: 115mA

Max. Power consumption Reception mode: 45mA

Standby consumption: 4.2µA

Wakeup time: 130µs

Transmission rate: up to 2MBPS (2MBPS/1MBPS/250KBPS)

Antenna performance (peak): 2DB

Size: 41.0 x 15.5 x 5.6 mm

PIN distance: 2.54 mm

Operating temperature -20 - 70 ° C

Automatic transmission of broken packages

SPI interface for microcontrollers like Arduino Raspberry Pi

Technical data display:

Oled Display Module

Model: SSD1306

Size: 0.96 inches / 2.44cm

Resolution: 128 x 64 pixels

Consideration angle:> 160 °

Supported platform: series 51, MSP430 series, Series STM32/2 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 E / A-ports

Back lighting: OLED self-lighting, no backlight required

pin definition:

1. VCC: 3.3-5 V

2. GND: mass

3. SCL: serial clock

4. SDA: Serial data

Further information:


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