ESP32 Compact Camera to Discord

This project is a self-initiated exploration into using the ESP32-WROVER-CAM for low-power, battery-operated photo capture and wireless sharing.
The goal was to create a handheld camera device that can instantly take a photo and send it to a private Discord channel, with minimal delay, wiring, or user interaction.

The idea came from wanting a way to instantly share photos with friends during social events — without needing to unlock a phone, open an app, or manually upload anything. The device handles everything with a single tap.

When powered on, the ESP32 connects to Wi-Fi, initializes the camera module, captures a photo, and uploads it to an FTP server. A hosted Node.js server listens for new uploads, generates a public URL, and shares the photo in Discord using a webhook.
The process from touch to Discord post is typically under 3 seconds.

This project was a valuable exploration into low-power embedded systems, fast boot reliability, and simple IoT integrations — all while working within the ESP32's limitations.

Interesting features:

• ESP32-WROVER-CAM module using the OV2640 camera.
• Shutter button uses an ESP32 capacitive touch pin, simplifying the design (no pull-down resistor or mechanical switch needed).
• Photo captured and posted to Discord in under 3 seconds.
• Uploads image to a server via FTP, where a Node.js Express server handles link generation and webhook posting.
• Powered by a 3.7V 18650 Lithium-Ion cell using a Pololu U3V16F3 3.3V step-up voltage regulator.
• OLED 0.96" display (optional) for debug messages, not required for normal operation.
• Delayed subsystem initializations to improve boot reliability when running from battery.
• All logic and communication handled directly by the ESP32.
• Compact, untethered form factor, suitable for field or personal use.