ESPHome Configuration for E-Paper Display

Overview

This ESPHome configuration is designed for an ESP32-C3 microcontroller with an E-Paper display. It integrates with Home Assistant to display real-time environmental data, including temperature, humidity, CO2 levels, weather forecast, and battery voltage. Additionally, the device operates in a deep sleep mode to optimize power consumption.

Features

• E-Paper Display (Waveshare 2.9-inch)
  • Displays indoor & outdoor temperature and humidity
  • Displays min/max temperature values for outdoor conditions
  • Shows battery voltage and CO2 levels with air quality indication
  • Weather forecast for the next day with icons and temperature range
  • Real-time clock synchronization with Home Assistant
• Connectivity
  • Wi-Fi integration with manual IP setup
  • Home Assistant API for data exchange
  • Over-the-air (OTA) firmware updates
• Power Optimization
  • Deep sleep enabled with a schedule to conserve power
  • Runs for 1 minute, then sleeps for 10 minutes
  • Nighttime deep sleep until 06:00 AM

Hardware Requirements

• ESP32-C3-DevKitM-1
• Waveshare 2.9-inch E-Paper display (2.90inv2-r2 model)
• Battery (if using portable mode, voltage monitoring included)

Configuration Details

ESPHome Setup

esphome:
  name: dash_small_esp
  friendly_name: dash_esp

esp32:
  board: esp32-c3-devkitm-1
  framework:
    type: arduino

Home Assistant API & OTA

api:
  encryption:
    key: "YOUR_ENCRYPTION_KEY"

ota:
  password: "YOUR_OTA_PASSWORD"

Wi-Fi Configuration

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  fast_connect: true
  manual_ip:
    static_ip: 192.168.178.70
    gateway: 192.168.178.1
    subnet: 255.255.255.0
  ap:
    ssid: "Esp-Dash Fallback Hotspot"
    password: "WW5yGpGDsNge"

Deep Sleep Mode

deep_sleep:
  id: deep_sleep_1
  run_duration: 1min
  sleep_duration: 10min

Time Synchronization

time:
  - platform: homeassistant
    id: ha_time
    timezone: Europe/Berlin
    on_time:
      - seconds: 0
        minutes: 30
        hours: 0
        then:
          - deep_sleep.enter:
              id: deep_sleep_1
              until: "06:00:00"
              time_id: ha_time

Display Configuration

display:
  - platform: waveshare_epaper
    id: epaper_display
    cs_pin: GPIO6
    dc_pin: GPIO9
    busy_pin: GPIO5
    reset_pin: GPIO8
    model: 2.90inv2-r2
    rotation: 90°
    update_interval: 20s
    full_update_every: 30
    reset_duration: 100ms
    lambda: |-
      it.printf(0, 15, id(mdi_icons), "\U000F0531");

Sensors

sensor:
  - platform: homeassistant
    id: outdoor_temp
    entity_id: sensor.indoor_aussenmodul_temperature
    accuracy_decimals: 1
    unit_of_measurement: "°C"
  - platform: homeassistant
    id: outdoor_humidity
    entity_id: sensor.indoor_aussenmodul_humidity
    accuracy_decimals: 0
    unit_of_measurement: "%"

Installation Guide

1. Prepare the ESP32-C3

   • Flash ESPHome firmware using esphome-flasher or ESPHome dashboard.
   • Ensure your Wi-Fi credentials are set correctly in secrets.yaml.

2. Home Assistant Integration

   • Navigate to Settings -> Devices & Services.
   • Click Add Integration and search for ESPHome.
   • Add the ESP device using the assigned IP 192.168.178.70.

3. OTA Updates

   • Once the device is connected, you can push updates wirelessly using:

     esphome run dash_small_esp.yaml --upload-port <DEVICE_IP>

Notes

• Ensure ESPHome and Home Assistant are running the latest versions.
• The ESP32 operates on deep sleep mode for power efficiency.
• The E-Paper display only updates every 20 seconds to reduce wear.
• Fonts and icons are loaded from the fonts/ directory.

License

This project is licensed under the MIT License. Contributions and modifications are welcome!