Milestone 4.2

4.2: Delivery

Charging System:

The solar panel charges the in-case battery. The in-case battery then charges the iPhone when desired. The videos below show it working outside of the case. Note: Red LED indicates battery is connected and charging, green LEDs on other chip indicates 5 V output and battery charge level.

Case:

The phone case/housing for the electronics was 3D printed with TPU for a tight fit while still being flexible. Images of the damaged model are shown below. The model was then reprinted and fitted with an iPhone 13, which is shown in the video below.

Display/Arduino:

Battery life and solar power input is displayed on the OLED screen. Output is displayed in the picture below

The Arduino also controls digital toggle switches that utilize transistors and push buttons to hold the on or off state when pressed. These toggle the display power and phone charging power. The video below shows the display power being toggled. Note: The push buttons couldn't be connected easily in a temporary circuit, since the 3D printed case was damaged at the time of testing, so the screen is just pulsing at the button delay.

Final Product:

The two videos below show the functionality of the case. Charging of the iPhone, display functionality, information shown updating on the display, and the on/off push button for the iPhone charging and display power are all shown below. The image slider shows the wiring without the cover in the first image and the second image shows the iPhone battery percentage increasing after a couple of minutes after the first video was taken. The case was also made slightly larger to allow for more space to assemble the electronics within the case.

GREEN CASE