ESP32-CAM Development Board with OV2640 Camera

ESP32-based WiFi+Bluetooth board with 2MP OV2640 camera and microSD slot for low-cost video/image capture and IoT vision projects.

₹450 + 18% GST

SKU: BOTBIT-IOT-01 · Best for: WiFi video streaming / DIY IP camera and video doorbell

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Overview

About ESP32-CAM Development Board with OV2640 Camera.

The ESP32-CAM by Ai-Thinker is a tiny, low-cost camera board that combines a dual-core ESP32-S chip (WiFi + Bluetooth) with a 2-megapixel OV2640 camera and a microSD card slot. For roughly Rs 450 it packs an entire wireless camera system onto a board smaller than a matchbox, which is why it has become the default choice for hobbyists building video doorbells, WiFi CCTV, and vision projects in India.

Its popularity comes from the price-to-capability ratio: you get streaming MJPEG video, still-image capture to SD card, and enough compute to run lightweight face detection and simple TinyML models, all programmable through the familiar Arduino IDE. There is a strong ecosystem of ready-made sketches (CameraWebServer example, ESP32 face recognition) so beginners can get a live stream running within an hour.

One thing every buyer must know: the ESP32-CAM has no onboard USB port. You program it using a separate USB-to-TTL (FTDI/CP2102) adapter or the popular ESP32-CAM-MB programmer shield. Factor that into your order if you do not already own one.

Key features

Why it stands out.

Dual-core Tensilica LX6 ESP32-S SoC with 2.4GHz WiFi (802.11 b/g/n) and Bluetooth/BLE

2MP OV2640 camera sensor supporting resolutions up to 1600x1200 (UXGA), with JPEG output

Onboard microSD/TF card slot for saving captured images and video locally

4MB external PSRAM enabling higher-resolution framebuffers and smoother streaming

Onboard bright white LED flash (GPIO4) plus a small red status LED

Programmable via Arduino IDE, ESP-IDF or MicroPython using an external USB-TTL adapter

Specifications

Selection facts.

SoC	ESP32-S (Tensilica dual-core LX6, up to 240MHz)
Wireless	WiFi 802.11 b/g/n 2.4GHz + Bluetooth 4.2/BLE
Camera	OV2640, 2MP, up to 1600x1200 (UXGA)
SRAM / PSRAM	520KB internal SRAM + 4MB external PSRAM
Flash	4MB SPI flash
Storage	microSD (TF) card slot, up to 4GB recommended
Operating voltage	5V input (recommended for camera stability); 3.3V logic
USB	None onboard — requires external USB-TTL programmer
GPIO	Limited broken-out GPIO (many shared with camera/SD)
Dimensions	Approx 27 x 40.5 x 4.5 mm

Applications

Where it is used.

WiFi video streaming / DIY IP camera and video doorbell
Time-lapse and motion-triggered image capture to SD card
Face detection and simple face recognition access control
Wildlife / nest / pet monitoring cameras
TinyML and edge vision experiments (person detection, QR reading)
Home automation dashboards that need a live camera feed

Buying guide

How to choose.

Buy the ESP32-CAM if you want the cheapest possible way to add a camera and WiFi to a project and you are comfortable using the Arduino IDE. It is ideal for students, makers and prototypers building monitoring, observation or vision-based IoT gadgets.

Because the board has no USB port, pair it with a USB-to-TTL adapter (CP2102 or FTDI) or, more conveniently, an ESP32-CAM-MB programmer shield that adds a micro-USB port and a program button. A stable 5V supply is important — camera brownouts and 'Camera init failed' errors are almost always caused by weak USB power.

For heavier vision workloads consider that this board runs warm and has limited free GPIO. If you need more IO and a built-in USB port, the standard ESP32 DevKit is a better base and you can attach a separate camera; but for a compact all-in-one camera node, the ESP32-CAM remains unbeatable on price.

FAQ

Common questions.

Does the ESP32-CAM have a USB port to program it directly?

No. There is no onboard USB. You need an external USB-to-TTL adapter (CP2102/FTDI) or an ESP32-CAM-MB programmer board. Connect the adapter's TX/RX to the board's U0R/U0T, ground IO0 to GND to enter flash mode, then release it to run.

Which Arduino board setting and library do I use?

Install the ESP32 boards package in Arduino IDE, select 'AI Thinker ESP32-CAM' as the board, and use the built-in 'CameraWebServer' example under ESP32 > Camera. The esp_camera library ships with the ESP32 core, so no extra install is needed.

Why do I get 'Camera init failed' or 'Brownout detector' errors?

This is almost always insufficient power. Use a solid 5V supply through the 5V pin (not weak 3.3V), keep wires short, and avoid powering the camera from a laptop USB hub. A separate 5V/1A supply usually fixes it.

What SD card size does it support?

It works reliably with microSD cards up to about 4GB formatted as FAT32. Larger cards sometimes fail to mount. The SD slot shares pins with some GPIOs, so certain pins are unavailable when the card is in use.

Is it available in India and what is in the box?

Yes, it is widely stocked across Indian electronics stores. A standard package includes just the ESP32-CAM board with the OV2640 camera module attached. The USB-TTL programmer is usually sold separately unless you buy a bundle.