DTU simulator for Hoymiles MI-Series Microinverter over RF (NRF24), on ESP8266 & nRF24L01+

LICENSE : https://creativecommons.org/licenses/by-nc-sa/3.0/de/

Supports only ONE inverter!

Supported inverters, with serial number begin:

• 0x1020xxxxxx,0x1021xxxxxx
• 0x1040xxxxxx,0x1041xxxxxx
• 0x1060xxxxxx,0x1061xxxxxx

Hoymiles HM inverters are supported in this project: https://github.com/lumapu/ahoy/

This software is a QUICK&DIRTY SW for debugging/controlling the Hoymiles inverters over RF, tested with:

• MI1500, 3 and 4 PV's.
• MI600
• MI300
• TSUN800 (as MI600), 2 PV's
• should work with MI1200 also

Radio, CRC, part of Web based on the orig. SW from Hubi's earlier stage from this (https://github.com/hm-soft/Hoymiles-DTU-Simulation).

Project initiated here: https://www.mikrocontroller.net/topic/525778

Do not expect any quality from this SW!!!

Issues can be reported on https://www.mikrocontroller.net/topic/525778, but do not expect any answer immediately!!!

As far as you know what you are doing, you can use this SW.

READ THE LINES BELOW BEFORE REQUEST A SUPPORT:

• you need ArduinoIDE for this skecth! tested with arduino-ide 2.0.0-rc6 und 1.8.19
• you have to configure your Arduino-IDE for ESP8266
• you need to install nrf24 library, tested with RF24 lib Version:1.4.5
• you need to install also ESP8266WiFi 1.0 ,ESP8266WebServer 1.0, ArduinoMqttClient 0.1.5 libs
• keep all source files in same folder
• configure secrets.h, with this config it should run
• if needed, configure settings.h

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Runs on ESP8266: wifi, mqtt, shows all data on serial monitor and on web site

Wiring ESP8266 & nRF24L01+

https://github.com/lumapu/ahoy/blob/main/Getting_Started.md#things-needed

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For zeroexport, it needs a sep. mqtt connection with a topic "ImpExpW" to a Chint-DTSU, see mqtt.h . I had to choose the topics so, because of an earlier implementation on RS485 modbus DTUPro<>DTSU666 in my house. You can change it as you like! If you change the topics, be sure change the PV numbers everywhere!

Define mostly everything in settings.h and secrets.h

• Runs also as NRF24-Sniffer (adr 0x00aa, 0x0055, listen everything) if defined.
• Output on HTTP and serial monitor, if defined
• Controlling over several serial commands
• sends all data to a mqtt broker, if defined

Please SEE the issues !!!

NO COMMERCIAL USE !!

VERSION "V0.1.5"

• using secrets.h for SSID,PW etc.
• stay on same RxCH until no Rx OR gets a rxtimeout
• fine tuning on zeroexport
• update timer for checkPV,zeroexport, webservice, mqtt
• Tx only if its daytime (only with Wifi, otherways always Tx)
• new mqtt id
• still issues with Rx-irq, no issues with Rx-polling

VERSION "V0.1.6"

• fixed limiting the wr over WR_LIMITTED in settings.h
• more data moved to settings.h
• several enhancements

VERSION "V0.1.7"

• new file "Globals.h"
• automatic recognition the inverter (MI) model,power and ports
• several changes for stability
• zeroexport with % of reated power OR absolute power

VERSION "V0.1.9"

• no irq issues anymore
• significant modifications
• a lot of enhancements
• more serial commands for inverter, type 1 help on console
• mqtt reconnect
• JSON string to mqtt

VERSİON "V0.1.9.1"

• changed max. power of one MI.port