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Overview: ThermoSnap is our Spring 2026 HOPE Final Project, consisting of a wireless controller attached to a thermal printer, allowing remote and easy printing of images from a webpage.
by Kailash Rao, Harlan Phillips, Sahil Dhir, Derek Peng
Description:
Simply connect to the module’s wireless Access Point (AP) and use our intuitive web interface to select and print custom photos. Powered by a rechargeable battery, ThermoSnap is a fully portable printing solution. Our design utilizes multiple power converters to regulate voltage for both the thermal printer and the ESP microcontroller, ensuring a stable connection and consistent print quality even during high-current draws.
Features:
ESP32 WROOM S3 microcontroller in Access Point mode
Image dithering software run on client
Powered by rechargeable LiPo Battery
1000uf Bulk capacitor to ensure printer receives consistent power
Image 1: Schematic
Image 1: Schematic
The KiCad schematic of all of the different components
Image 2: Layout
Image 2: Layout
The KiCad layout of all of the different footprints
Image 3: Turkey
Image 3: Turkey
Our first image printed from our PCB
Image 4: Completed Setup
Image 4: Completed Setup
The board and printer connected, with the LiPo battery fully powering the setup.
Image 5: Final Product (Front)
Image 5: Final Product (Front)
The printer, board, and battery packaged in a custom 3D printed home.
Image 6: Final Product (Back)
Image 6: Final Product (Back)
The board and printer connected, with the LiPo battery fully powering the setup.
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