SensorNodeESP

Data from sensor (PIR, CO2, smoke/water detectors...) is logged and sometimes sent to user (WhatsApp message, E-mail).

Server (Hub): ESP32 (SRX882, buzzer)

Web app - interface

Client: ESP8266 & ENS160+AHT21

ESP wakes up every 10 minutes and sends data from sensors to the hub (server) via ESP-NOW.

Client: ATtiny85 & STX882

ATtiny sleeps, wakes up on HIGH (test button, PIR, wires for water detection...), sends signal via STX882, goes back to sleep. Device can be battery powered.

Movement detection

Water detection

TODO

• README.md: Change images where necessary.
• Hub:
  • Web App:
    • Display cmbSensor value on btnRefresh click so if the web app didn't load completely - click on that button would load web app properly and not only sensor data
    • ? Add https://xeco.info/xeco/vazduh/Beograd%20%C4%8Cukarica-Beogradskog%20Bataljona-1100127923 to Links section (location is not that near me :\ )
    • Improve interface (chart.js disappears, shrinks)
  • Add 5V buzzer (with transistor)
• Clients:
  • SCD30:
    • Check if pinButton is pressed before wait for response from airSensor (SCD30)
    • Try to use TimeSlotSend class
  • (WIP) TimeSlotSend class - solution for sleep and timely reporting by clients: Client will sleep for e.g. 9 minutes, and then asks hub for current time and then sends data based on that time.
    • Use this class in ens160_dht22 project.
    • Should (re)trying to send data (when something is wrong) be a part of this class?
  • Add more sensor nodes
    • (WIP) Test current consumption in deep sleep and time it takes for ESP32 module to send msg via ESP-NOW for: ESP32-C3 Pro Mini and ESP32 w/ battery connector. Can those modules be used for PIR/water detection? Try detecting water with wires and ESP32 w/ battery connector.
    • ATtiny & HC-12
      • Is ESP32 hub impaired by calling HC12.available()? Does it interfere with buzzer?
      • Remove ATtiny & STX882 from project if STX882 can't work precisely with ATtiny85 as with other microcontrollers
    • Microphone (noise levels)

Add new client routine

• my_esp_now.h:
  • setPeers(): add new setPeer() call
    • setPeer(): set parameters: mac address, sensor type, device
  • Increase length of peers array: peer_info peers[]
  • Add new members to arrays: StrSensorTypes[], SensorTypesComment[]
  • OnDataRecv(): if (p->type == SensorType::...)
• Enums.h: Add new members to SensorType, Device
• index.html:
  • CmbChartParamsChange(): adjusting chart for sensors with temp and hum
  • lastChartParam: add default property for new sensor

Links

ESP-NOW

• https://randomnerdtutorials.com/esp-now-two-way-communication-esp32/
• https://randomnerdtutorials.com/esp-now-two-way-communication-esp8266-nodemcu/
• https://randomnerdtutorials.com/esp-now-auto-pairing-esp32-esp8266/
• https://randomnerdtutorials.com/esp32-esp-now-wi-fi-web-server/
• https://rntlab.com/question/esp-now-gateway-wifi_mode_sta-with-a-wifi-router/
• https://forum.arduino.cc/t/use-esp-now-and-wifi-simultaneously-on-esp32/1034555/16

Remarks

• ESP-NOW communication works if WiFi channel on the router is set to 1. There might be ways to fix that by using wifi_promiscuous_enable()...