Deploy, Monitor & Update in the Field
Run on battery with OTA updates and remote control.
Deploy, Monitor & Update in the Field is a free Arduino & IoT Academy lesson on CoddyKit — lesson 4 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Arduino & IoT Academy learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.
Take It Live
Your device works on the bench. Now you deploy it: run it on battery, watch it from afar, and update it without ever touching the USB cable. 🏠
Power It for the Field
Off your laptop now. Give the node a steady power source, a USB adapter or a battery pack sized for how long it must run.
Sleep to Save Battery
For battery life, add deep sleep: wake, sample, send, then power down most of the chip until the next reading is due.
esp_sleep_enable_timer_wakeup(60 * 1000000);
esp_deep_sleep_start();Enable OTA Updates
So you never unplug it again, turn on ArduinoOTA in setup(). New firmware can now be pushed across WiFi.
ArduinoOTA.begin();Service OTA in the Loop
OTA needs a heartbeat. Call ArduinoOTA.handle() each loop so the device stays ready to accept a wireless upload.
void loop() {
ArduinoOTA.handle();
}Monitor Health, Not Just Data
Publish a heartbeat topic alongside readings. If it goes quiet, you instantly know the device dropped offline.
client.publish("home/livingroom/status", "alive");Watch Signal & Uptime
Report extras like WiFi signal strength and uptime. Weak signal often explains a node that keeps dropping its connection.
long rssi = WiFi.RSSI();Plan a Safe Rollback
Updates can go wrong. Keep the last good firmware so you can roll back fast if a new build misbehaves in the field.
Secure the Whole Thing
A live device is a target. Keep secrets out of code, use TLS for cloud links, and require a password for OTA uploads.
ArduinoOTA.setPassword("strongSecret");Control It Remotely
From your dashboard, send a command and confirm the node acts on it. Flipping a relay from your phone proves remote control end to end.
You Shipped It
Sensing, cloud, alerts, battery, OTA, and security all in one device. You just built a complete, connected smart-home sensor. 🎉
Quick Check
Final check on running in the field.
Recap
You powered it, added sleep, enabled OTA, monitored health, secured it, and controlled it remotely. Your capstone device is truly in the field. 🚀
Frequently asked questions
Is the “Deploy, Monitor & Update in the Field” lesson free?
Yes — the full text of “Deploy, Monitor & Update in the Field” is free to read here on the web, and the Arduino & IoT Academy course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Arduino & IoT Academy course, upgrade to CoddyKit PRO.
What will I learn in “Deploy, Monitor & Update in the Field”?
Run on battery with OTA updates and remote control. You practise Arduino & IoT Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Arduino & IoT Academy?
No prior experience is required. Arduino & IoT Academy on CoddyKit is structured for beginners through advanced learners; this is — lesson 4 of 4, so you can start here or from the beginning and move at your own pace.
How long does the “Deploy, Monitor & Update in the Field” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Arduino & IoT Academy lesson?
Yes. Every Arduino & IoT Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- Plan the End-to-End Architecture
- Wire & Code the Sensor Node
- Build the Cloud Dashboard & Alerts
- Deploy, Monitor & Update in the Field