Case:

We plan to start by 3D printing prototypes of our case to refine the design, and eventually transition to a durable titanium version for the final product.

Our Display:

1.3" OLED Display Module I2C IIC Serial 128X64 SH1106 LCD Blue Light Screen for Arduino Raspberry Pi 51 MSP420 STIM32 SCR ESP32

Our Solar Panel:

1.2 Watt 6 Volt Small Solar Panel - ETFE

High-efficiency SunPower solar cells mounted to PCB using SMT Process

Waterproof, UV- and scratch-resistant ETFE coating

2x Solder Pads

Our Computer Chip:

Arduino Nano ESP32 Without headers [ABX00092] ESP32-S3, USB-C, Wi-Fi, Bluetooth, HID Support, MicroPython Compatible

Seeed Studio Lipo Rider Plus - Lithium Polymer Charge controller

Our battery:

BATTERY LITH-ION 3.7V 2AH

3.7 V Lithium-Ion Polymer Battery Rechargeable (Secondary) 2Ah

Note: Plan to change to a 3.7 V 5 Ah Li-Po battery once delivered

Charging Electronics:

Planning to use the following once delivered:

1.5 V to 6.5 V input 5 V output buck-boost converter to regulate incoming solar voltage

5 V to 12 V boost converter to step up DC voltage to minimize space used powering the Arduino

Currently using a 4.7 V to 6 V input 5 V output voltage regulator

Software:

We are considering adding a software feature to integrate with our case in the future, which might display real-time battery levels charged by the solar panel.

Battery life and incoming solar power shall be displayed on the OLED display using the Arduino, voltage dividing circuits, and software.