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# IoT Carrier v0.1
## Overview
IoT Carrier v0.1 is a modular sensing platform designed to support multiple ESP32 development boards through a standardized hardware interface.
The carrier board integrates power management, analog sensor inputs, I²C communication interfaces, and dedicated connectors for environmental sensing applications.
The platform allows different ESP32 boards to be exchanged without hardware redesign, simplifying prototyping, firmware development, and testing.
## Functional Block Diagram
<p align="center">
<img src="https://gitea.hubex.al/HUBEX/IoT_Carrier/raw/branch/main/IoT_Carrier_Images/Functional_Block_Diagram.png" width="500"><br>
<b>Figure 1.</b> Functional Block Diagram of the IoT Carrier v0.1.
</p>
## Board Information
The figures below identify the main components and connectors on the IoT Carrier v0.1 PCB.
<table>
<tr>
<td align="center">
<img src="https://gitea.hubex.al/HUBEX/IoT_Carrier/raw/branch/main/IoT_Carrier_Images/Board_components-Front.jpeg" width="420"><br>
<b>Figure 2.</b>Top view of PCB.
</td>
<td align="center">
<img src="https://gitea.hubex.al/HUBEX/IoT_Carrier/raw/branch/main/IoT_Carrier_Images/Board%20components-Back.jpeg" width="420"><br>
<b>Figure 3.</b> Bottom view of PCB.
</td>
</tr>
</table>
## IoT Carrier v0.1 Features
<p align="center">
<img src="https://gitea.hubex.al/HUBEX/IoT_Carrier/raw/branch/main/IoT_Carrier_Images/IoT_Carrier_v0.1_Features.png" width="650"><br>
<b>Figure 4.</b> IoT Carrier v0.1 functional features and interfaces.
</p>
## Fully Assembled Prototype
<table>
<tr>
<td align="center">
<img src="https://gitea.hubex.al/HUBEX/IoT_Carrier/raw/branch/main/IoT_Carrier_Images/Fully_assembled_IoT_Carrier_with_the_LMV324-based_Sound_Detector.png" width="350"><br>
<b>Figure 5.</b> Fully assembled IoT Carrier v0.1 with the LMV324-based Sound Detector.
</td>
<td align="center">
<img src="https://gitea.hubex.al/HUBEX/IoT_Carrier/raw/branch/main/IoT_Carrier_Images/Fully_assembled_IoT_Carrier_with_the_Sensirion_SCD30_sensor.jpeg" width="315"><br>
<b>Figure 6.</b> Fully assembled IoT Carrier v0.1 with the Sensirion SCD30 sensor.
</td>
</tr>
</table>
## Programming Power Supply Note
* Power the ESP32 board only through its own USB programming connector.
* The USB-C connector on the IoT Carrier PCB is **power only** and does not support data communication.
* Disconnect the Li-Po battery and any external power source before firmware upload.
* Use a USB cable that supports **data communication**.
* Select the correct ESP32 board profile and COM port in the Arduino IDE.