• WiFi Ap with setup
• Web display Data for Inverters where support the QPIGS Request
• Web Update, Reset, Restart
• send MQTT Data
• Building using Platform.io
• Live web pages with ajax

• static device information from the QPIRI command
• PV power in Watt
• Inverter Operation Mode

• Find a way to automatic detect the inverter type and communication protocol
• add a way to auto build data from string answer
• Add a webpage to display log / error messages
• some other useless things
• change webpages to dark theme
• add other inverters

works with

• pip / PCM devices
• i solar
• IGrid
• All devices from EASUN
• and many many others based on the chinese solar inverter with a rj45 jack and usb port, primary identified by the display

Based around an ESP8266 WiFi microcontroller.

PROGRAMMING: You need to program it before hooking it up to the TTL board! Im using HW Serial since its so buggy using Software Serial and Wifi reliable so its not even worth it.

RESET: with HTTP://>ESP-IP</reset you can full reset the esp and bring it to the AP portal

UART0: Talks to the inverter at 2400 baud and for programming. DISCONNECT RX before programming

UART1: Used for debugging only. Just connect another serial adaptor to D4 with 9600 baud.

POWER: Using a 3.3V DC Buck Converter that can handle up to 20V or a DC/DC or USB power currently.

WIFI: The system defaults to AP mode on first setup. Surf to "Solar-AP" AP and then surf to http://192.168.4.1/ On this page configure WIFI and MQTT. Then you need to reboot the device either by the reboot botton or hard reboot. No changes are applied properly before reboot

Most of the parts can be bought as modules, it's usually cheaper that way.

Approximate prices found on Ebay

• ESP8266 - Wemos D1 Mini ($2.66)
• MAX3232 module ($0.70) - it's just a max3232 with 5 capacitors on a tiny little board
• DC-DC buck module ($1.50) - 12-80v down to 5v
• LEDs ($0.50) - The leds are for status etc

Total cost: $5