# LILYGO T-Journal

> Compact ESP32-PICO-D4 camera board with OV2640 2MP sensor, 0.91-inch SSD1306 OLED display, fisheye or normal lens options, WiFi, BLE, and LiPo battery support — a minimal wireless camera module for IoT vision projects.

## Quick Facts

- **Brand:** LILYGO
- **Board Type:** ESP32
- **Price:** ~$14.15
- **Product Readiness:** developer
- **CPU:** ESP32-PICO-D4
- **CPU Architecture:** Xtensa LX6
- **CPU Cores:** 2
- **RAM:** 520KB SRAM
- **Flash:** 4MB
- **USB:** Micro-USB
- **Power:** 5V + LiPo
- **Operating Voltage:** 3.3V
- **Battery:** LiPo (user-supplied, 1.25mm JST)
- **Charging Port:** JST 1.25mm
- **Display:** 0.91" OLED 128x32

## Connectivity

- **Wifi:** 802.11 b/g/n
- **Bluetooth:** BLE 4.2

## Open Source

- **Firmware:** Yes
- **Schematics:** No
- **PCB Layout:** No

## Compatible Firmware

arduino, esp-idf

## Use Cases

- wifi-camera-streaming
- computer-vision
- timelapse-photography
- iot-surveillance

## Components

- **ESP32-PICO-D4** (mcu): ESP32 SiP with 4MB flash, 520KB SRAM, 240MHz dual-core Xtensa LX6, WiFi and BLE 4.2 in minimal package — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.espressif.com%2Fsites%2Fdefault%2Ffiles%2Fdocumentation%2Fesp32_datasheet_en.pdf&ref=openhardware.directory&product=lilygo-t-journal&source=md-export)
- **OV2640** (camera): OV2640 2-megapixel camera sensor with fisheye or normal lens option for wide-angle or standard field of view — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.uctronics.com%2Fdownload%2Fcam_module%2FOV2640DS.pdf&ref=openhardware.directory&product=lilygo-t-journal&source=md-export)
- **SSD1306** (display): 128x32 monochrome OLED display for status and preview output — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fdatasheets%2FSSD1306.pdf&ref=openhardware.directory&product=lilygo-t-journal&source=md-export)

## Protocols

- **UART**
- **SPI**
- **I2C**

## Available Software

- **[Arduino IDE]()** (open-source)
- **[ESP-IDF]()** (open-source)

## Description

## Overview

The LILYGO T-Journal is a minimalist ESP32-PICO-D4 camera development board pairing an OV2640 2-megapixel image sensor with a tiny 0.91-inch SSD1306 OLED display. Available in fisheye or normal lens variants, it runs on the dual-core 240MHz Xtensa LX6 processor with 520KB SRAM and up to 4×16MB QSPI flash. Power comes from a USB 5V/1A input or a 3.7V LiPo battery via a JST 2-pin 1.25mm connector. The board draws approximately 160mA during operation and supports WiFi 802.11 b/g/n plus Bluetooth for wireless image streaming. A dedicated Wi-Fi antenna is included. The servo control output and red power LED round out the feature set. Programming is done via a USB cable and includes GPIO32 button and reset key.

## Where to Buy

- [LILYGO Official](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-journal&ref=openhardware.directory&product=lilygo-t-journal&source=md-export) — $14.15

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-journal&ref=openhardware.directory&product=lilygo-t-journal&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2FXinyuan-LilyGO%2Fesp32-camera-series&ref=openhardware.directory&product=lilygo-t-journal&source=md-export)

## Tags

`esp32`, `camera`, `ov2640`, `oled`, `wifi-camera`, `fisheye`

## Images

![LILYGO T-Journal](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-journal/931eae50e2da.jpg)
![LILYGO T-Journal](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-journal/273453281270.jpg)
![LILYGO T-Journal](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-journal/6d035f6ab6ed.jpg)
![LILYGO T-Journal](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-journal/768c9ce64242.jpg)
![LILYGO T-Journal](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-journal/fc153257803d.png)
![LILYGO T-Journal](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-journal/8fc76a2aeb72.jpg)
![LILYGO T-Journal](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-journal/aa15f39401df.png)

> **Battery Powered:** Li-Po

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