Hamtech Electronics Technologies

OTA Firmware Updates

Over-The-Air Firmware Updates

Update Your IoT Devices
Wirelessly, Anywhere

Push firmware updates to your ESP32, ESP8266, Arduino, and IoT devices from anywhere in the world. No physical access required. Simple integration, powerful results.

Start Free Trial View Code Example

Why Choose HamTech OTA

Everything you need to manage firmware updates for your IoT fleet

Automatic Updates

Devices check for updates on a schedule. Upload a new version and let the platform handle delivery to your fleet.

Secure Delivery

API key authentication, MD5 checksum verification, and rollback protection keep your devices safe during updates.

Real-Time Monitoring

See which devices are online, their current firmware version, and update status — all from one dashboard.

M-Pesa Payments

Integrated M-Pesa STK push for subscription payments. Choose a plan that fits your device count and budget.

Easy Integration

Simple REST API. Add a few lines to your Arduino or ESP32 sketch and you’re ready to receive updates.

Version Control

Keep multiple firmware versions, mark them active or inactive, and roll back instantly if needed.

How It Works

Get your devices updating wirelessly in four simple steps

Create Account

Register Device

Add your device in the dashboard. You’ll receive an API key to use in your code.

Upload Firmware

Upload your compiled .bin firmware file and assign it to your device type.

Auto Update

Your device checks for updates automatically and installs new firmware safely.

Arduino / ESP32 Code Example

Add a few lines to your existing sketch and you’re ready for OTA updates

ota_example.ino

// HamTech OTA — Arduino / ESP32 Example

#include <WiFi.h>
#include <HTTPClient.h>
#include <HTTPUpdate.h>

// Configure these with your own values
const char* ssid     = "YOUR_WIFI_SSID";
const char* password = "YOUR_WIFI_PASSWORD";

// From your OTA dashboard
const char* deviceHostname = "YOUR_DEVICE_HOSTNAME";
const char* apiKey         = "YOUR_API_KEY";
const char* currentVersion = "1.0.0";

// OTA platform endpoints
const char* checkUrl = "https://ota.hamtechtechnologies.com/api/check.php";
const char* pingUrl  = "https://ota.hamtechtechnologies.com/api/ping.php";

unsigned long lastCheck = 0;
const unsigned long CHECK_INTERVAL = 60000; // 60 seconds

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) delay(500);
  pingPlatform();
}

void loop() {
  if (millis() - lastCheck > CHECK_INTERVAL) {
    lastCheck = millis();
    pingPlatform();
    checkForUpdate();
  }
  delay(100);
}

Tip: Replace YOUR_WIFI_SSID, YOUR_WIFI_PASSWORD, deviceHostname, and apiKey with values from your OTA dashboard. That’s it — your device is ready for OTA updates.

Ready to Update Your Devices Wirelessly?

Create a free account, register your first device, and push your first OTA update in under 10 minutes. No credit card required.

Get Started Free