Deployment Guide

#include <WiFi.h>
#include <ESPmDNS.h>
#include <WiFiUdp.h>
#include <ArduinoOTA.h>

void setup() {
  Serial.begin(115200);
  
  // Connect to WiFi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
  }
  
  // Setup OTA
  ArduinoOTA.setHostname("Gridova-ESP32-001");
  ArduinoOTA.setPassword("admin");  // Change this!
  
  ArduinoOTA.onStart([]() {
    String type;
    if (ArduinoOTA.getCommand() == U_FLASH) {
      type = "sketch";
    } else {
      type = "filesystem";
    }
    Serial.println("Start updating " + type);
  });
  
  ArduinoOTA.onEnd([]() {
    Serial.println("\nEnd");
  });
  
  ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
    Serial.printf("Progress: %u%%\r", (progress / (total / 100)));
  });
  
  ArduinoOTA.onError([](ota_error_t error) {
    Serial.printf("Error[%u]: ", error);
    if (error == OTA_AUTH_ERROR) {
      Serial.println("Auth Failed");
    } else if (error == OTA_BEGIN_ERROR) {
      Serial.println("Begin Failed");
    } else if (error == OTA_CONNECT_ERROR) {
      Serial.println("Connect Failed");
    } else if (error == OTA_RECEIVE_ERROR) {
      Serial.println("Receive Failed");
    } else if (error == OTA_END_ERROR) {
      Serial.println("End Failed");
    }
  });
  
  ArduinoOTA.begin();
  Serial.println("OTA Ready");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
}

void loop() {
  ArduinoOTA.handle();  // Handle OTA updates
  
  // Your code here
}

# Find ESP32 devices
# Arduino IDE → Tools → Port → Network ports

# Or use espota.py
python espota.py -i 192.168.1.100 -p 3232 -f firmware.bin

# Or upload via Arduino IDE
# Select network port and click Upload

#include <HTTPUpdate.h>

const char* firmwareUrl = "https://api.gridova.com/firmware/latest.bin";

void checkForUpdate() {
  WiFiClientSecure client;
  client.setInsecure();  // Skip certificate validation
  
  httpUpdate.setLedPin(LED_BUILTIN, LOW);
  
  t_httpUpdate_return ret = httpUpdate.update(client, firmwareUrl);
  
  switch (ret) {
    case HTTP_UPDATE_FAILED:
      Serial.printf("HTTP_UPDATE_FAILED Error (%d): %s\n", 
                    httpUpdate.getLastError(), 
                    httpUpdate.getLastErrorString().c_str());
      break;
      
    case HTTP_UPDATE_NO_UPDATES:
      Serial.println("HTTP_UPDATE_NO_UPDATES");
      break;
      
    case HTTP_UPDATE_OK:
      Serial.println("HTTP_UPDATE_OK");
      break;
  }
}

void loop() {
  // Check for updates daily
  static unsigned long lastCheck = 0;
  if (millis() - lastCheck > 86400000) {  // 24 hours
    checkForUpdate();
    lastCheck = millis();
  }
}