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

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.

This offer contains different variants to choose from:

Set + Opendtu Firmware = ESP32 Devboard including 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 = just socket

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

only 10cm cable = only 10cm 8pin + 4pin jumper cable

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

GNU General Public License V2.0

Further information on license, firmware and installation:

https://github.com/tbnobody/opendtu

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:

https://github.com/lumapu/ahoy

Specs 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

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 distance: 2.54 mm

Operating temperature -40 - 85 ° C

Automatic transmission of broken packages

SPI interface for microcontrollers like Arduino Raspberry Pi

Specs 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:

Additional:

Set variants:

Display + Set + Opendtu firmware