InternshipKey terms and common mistakes
The words you will hear in Internet of Things work and the mistakes that most often cost interns approvals.
Key terms
| Term | Meaning |
|---|---|
| IoT | Internet of Things |
| DHT11 | Temperature and humidity sensor |
| Microcontroller | Small computer on a chip |
| BLE | Bluetooth Low Energy |
| MQTT | Lightweight publish/subscribe protocol |
| AWS IoT Core | AWS IoT messaging service |
| Threshold alert | Alert when a value crosses a limit |
| Default credentials | Factory passwords |
Common mistakes to avoid
- Wiring sensors without checking voltage levels, which can burn a 3.3 V board.
- Hard-coding Wi-Fi passwords in code pushed to GitHub.
- Sending data every second when once a minute is enough, wasting power and quota.
- Not handling a lost Wi-Fi connection, so the device stops for good.
Want to go deeper? The free Internet of Things (IoT) learning path has short modules, games and a certificate for each module.