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Dining-Buddy

jackshisd·Dining-Buddy·Keychain_project/Keychain_project.kicad_pcb

Dining-Buddy PCB layout, top view — open source ESP32 board by jackshisd

About the Dining-Buddy PCB

Dining-Buddy is an open source ESP32 PCB design by jackshisd, published on GitHub. It is a 2-layer board measuring 38 × 17.8 mm, with 7 components from 5 distinct parts.

Its main chip is the ESP32-C3, from the ESP32 family. By type, the board carries 2 ICs, 2 diodes, 2 resistors and 1 switch.

It belongs with the displays & leds and iot & wireless designs in this gallery.

From the project

An ultra-compact ESP32-C3 keychain device that displays UCLA dining menus and weather on an OLED screen with single-button control and nightly auto-updates.

- Safe Wi-Fi Shutdown: Device now safely enters deep sleep when unable to connect to Wi-Fi. - Manual Wi-Fi Retry: Long press the button to retry Wi-Fi connection without rebooting. - Smarter Menu Downloads: Optimized algorithm avoids redundant downloads, saving time and bandwidth. - Bug Fixes & Stability: Various minor improvements for a more reliable experience. - Custom Enclosure: 3D-printed and designed a protective case for portability. - PCB Revision 2: Updated layout for smoother button presses and improved assembly.

Dining-Buddy, from the project README
From the project README

Main components on the Dining-Buddy

ESP32-C3

Dining-Buddy bill of materials (BOM)

7 components, 5 distinct parts.

QtyPartRefs
1
ESP32-C3
U1
1
~
U2
1
SW_Push
SW1
2
LED
D1, D2
2
220
R1, R3

Dining-Buddy design files

The KiCad project lives in the jackshisd/Dining-Buddy repository on GitHub; these links point at the commit this page was built from.

Dining-Buddy: common questions

What microcontroller does the Dining-Buddy use?

The Dining-Buddy is built around the ESP32-C3, from the ESP32 family.

How big is the Dining-Buddy PCB?

The Dining-Buddy measures 38 × 17.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Dining-Buddy?

7 components, from 5 distinct parts. The full bill of materials is listed on this page.

Where can I download the Dining-Buddy design files?

From the jackshisd/Dining-Buddy repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Dining-Buddy design in my own project?

The repository has no license, so all rights stay with jackshisd. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Dining-Buddy without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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