Solar Panel Display

Introduction

This repository contains the code for a solar panel monitoring display. It is a simple display that shows the current power output of your solar panela. The project is based on a ESP8266 and a 1.54" e-Paper display from waveshare.

What works

• Displaying data on the screen
• Updating the screen
• Fetching data from a API to change display update intervalls based on day/night
• Connecting to a WiFi network
• Connecting to a the inverter to fetch data from it

What doesn't work yet

• Rotating the Screen
• Automatic updates in intervalls

Hardware

• Waveshare ESP8266
• Waveshare 1.54" e-Paper Display

Software

• MicroPython 1.9.4

Getting Started

• check out repo
• create a config.py file with the following content in root:

WIFI_SSID="your ssid"
WIFI_PASSWORD="your password"
WIFI_COUNTRY="YOUT_CONTRY_CODE"
DAYTIME_UPDATE_INTERVAL=180000 # 3 min
NIGHTTIME_UPDATE_INTERVAL=1800000 # 30 min
HISTORY_SIZE=200
LOCATION_LATITUDE=YOUR_LATITUDE
LOCATION_LONGITUDE=YOUR_LONGITUTE
SUNRISE_API="https://api.sunrise-sunset.org/json?lat="
SUNRISE_UPDATE_INTERVAL=43200000 # 12 hours
MIRROR_DISPLAY=True
ROTATE_DISPLAY=const(90)

• adjust the config.py to your needs
• upload all files *.py files to the ESP8266