This project will check water level in tank if water level < 20% pump will start and when water level > 80% pump will stop with HC-SR04 ultrasonic sensor, show data in 0.96 inch OLED Display and send distance to firebase realtime database for React dash board in next project.
Dashbased for monitor by Reacjs: https://github.com/kreangsak-project-sharing/react-dashboard-water-level
- Arduino core for ESP8266 WiFi chip: https://github.com/esp8266/Arduino
- Firebase Realtime Database Arduino Library for ESP8266 and RP2040 Pico: https://github.com/mobizt/Firebase-ESP8266
- Adafruit_SSD1306: https://github.com/adafruit/Adafruit_SSD1306
#define FIREBASE_HOST "Firebase database URL"
#define FIREBASE_AUTH "Database Secrets"
#define WIFI_SSID "Wifi Username"
#define WIFI_PASSWORD "Wifi Password"
IPAddress ip(192, 168, 0, 100); //Wifi IPAddress
int maxDist = 1000; // Tank Height or full water level you need in millimeters
| LED & Relay | NodeMCU ESP8266 | Remark |
|---|---|---|
| LED Wifi Status | D3 | Check wifi connection |
| LED Pump Working | D4 | Check pump working |
| LED Pump Stop | D5 | Check pump stop |
| Pump Start for Relay | D6 | Replace this to relay |
| HC-SR04 Pin | NodeMCU ESP8266 |
|---|---|
| VCC | VU |
| TRIG | D7 |
| ECHO | D8 |
| GND | GND |
| 0.96 inch OLED Display | NodeMCU ESP8266 |
|---|---|
| GND | GND |
| VDD | 3V |
| SCK | GPIO 5 (D1) |
| SDA | GPIO 4 (D2) |
- Can change pumpstartmanual state to ture for start pump when water level < 80%
- Can change pumpstopmanual state to ture for stop pump
- Can change resetboard state to ture for restart board
- Dashbased for monitor by Reacjs: https://github.com/kreangsak-project-sharing/react-dashboard-water-level
- Arduino monitor water level with NodeMCU ESP8266 + firebase + Blynk: https://github.com/kreangsak-project-sharing/arduino-water-level-firebase-blynk