Sentinel

The Sentinel project aims to create an all-encompassing, deployable field solution to monitor plant growth and crop disease over extended periods of time.

Features

Components

• (Two) Intel RealSense D415
• Nvidia Jetson Orin Nano
• AB02S LoRaWAN Module
• BME280 Temperature, Humidity, Pressure Sensor
• DS1307 Real Time Clock
• Ultimate GPS Module
• E-Ink Display
• Microcontroller Managed Power Switch
• SwitchDoc Labs Grove/Pin Dual WatchDog Timer
• DFRobot Solar Power Manager

Compute

Specifications	Component View
Jetson Orin Nano Developer Kit 40 TOPS 1024-core NVIDIA Ampere architecture GPU with 32 Tensor Cores GPU: 625 MHz CPU: 6-core Arm® Cortex®-A78AE v8.2 64-bit CPU Cache: 1.5MB L2 + 4MB L3 Max Frequency: 1.5 GHz Memory: 8GB LPDDR5 128-bit Width, 68 GB/s
Particle Photon 2 Realtek RTL8721DM MCU ARM Cortex M33 CPU Max Frequency: 200 MHz Memory: 3072 KB Program Storage: 2048 KB 802.11a/b/g/n Wi-Fi, 2.4 GHz and 5 GHz Bluetooth Low Energy 5.0

Storage

• 512gb PCIe M.2 Gen3 M-Key x4 NVME

Connectivity

• 802.11AC WiFi
• LoRaWAN
• GPS
• (Not currently in use) Bluetooth 5.0
• (One) RJ45 Gigabit Ethernet Connection

Expansion (Not currently in use)

• PCIe M.2 Gen3 M-key x2 Slot
• UHS-1 with SDR104 Mode TF/SD Card Slot
• (Two) MIPI CSI-2 22-pin Camera Connector

Power Consumption

• Jetson: 7W to 15W, dependent on CPU power configuration.
• Particle: 2.5W, theoretical maximum

Power Supply

• 12V AGM 6AH Battery
• 12V 25W Solar Cell Array

Documentation & Guides

• Jetson Orin Flashing
• Sentinel Hardware Components
• Sentinel Software Overview
• Sentinel Machine Learning Overview
• Sentinel Image Capture Program

Last Updated: 7/22/24