TTGO LoRa32-OLED

Development Board

Code name: TTGO_LoRa32

ESP32 LILYGO

TTGO LoRa32-OLED is a development board based on the ESP32 microcontroller using XTENSA architecture.

This board features a maximum CPU frequency of 240 MHz and 4MB flash memory.

About TTGO LoRa32-OLED

ESP32 board with built-in OLED and LoRa - perfect for long-range wireless projects with a visual interface.

Where to Buy TTGO LoRa32-OLED

Amazon.com Ships worldwide

View Price

Amazon.de Ships to EU

View Price

AliExpress Best value

View Price

Prices are subject to change. We earn from qualifying purchases as an Amazon Associate.

Technical Specifications

Complete technical specification details for TTGO LoRa32-OLED

Display

Type OLED

USB

Type Micro-USB

Serial Chip CH9102

Connectivity

WiFi 802.11 b/g/n (2.4 GHz)

Bluetooth 4.2

BLE 4.2

LoRa Yes

Microcontroller

Model esp32

Clock Speed 240 MHz

Flash Size 4MB

Architecture xtensa

✨ Features & Pins

• OLED Screen

Download Full Datasheet

Quick Setup

Copy-paste configs for TTGO LoRa32-OLED - auto‑generated from this board's exact hardware specs.

ESP32 240 MHz 4MB DIO Xtensa

In Arduino IDE 2 select Ttgo Lora32 from the esp32 by Espressif package. In PlatformIO use board = esp32dev. ESP32 · 240 MHz · 4MB · DIO.

Tools menu settings

Board (select in Arduino IDE) Ttgo Lora32

CPU Frequency 240 MHz

Flash Size 4MB

Flash Mode DIO

Upload Speed 921600

Architecture Xtensa

In Arduino IDE 2, open Boards Manager, search "esp32" by Espressif and install it. Then go to Tools → Board and select "Ttgo Lora32" for the TTGO LoRa32-OLED.

platformio.ini


[env:ttgo-lora32]
platform  = espressif32
board     = esp32dev
framework = arduino

; Exact hardware config for TTGO LoRa32-OLED
board_build.mcu        = esp32
board_build.f_cpu      = 240000000L
board_build.flash_size = 4MB
board_build.flash_mode = dio
board_upload.flash_size = 4MB

The board value is a close generic match - check PlatformIO board registry for an exact fit.

esp32: block (YAML)


esp32:
  board: esp32dev
  framework:
    type: arduino   # or "esp-idf"

# TTGO LoRa32-OLED - 240 MHz ESP32
# Flash: 4MB | USB: Micro-USB

Paste into your device's .yaml. See ESPHome ESP32 docs for full options.

esptool.py - flash command


esptool.py \
  --chip esp32 \
  --baud 921600 \
  write_flash \
    --flash_mode dio \
    --flash_size 4MB \
    0x1000 bootloader.bin \
    0x8000    partitions.bin \
    0xe000    boot_app0.bin \
    0x10000   firmware.bin

Install: pip install esptool - replace firmware.bin with your binary - bootloader at 0x1000

TTGO LoRa32-OLED Pinout Diagram

Complete pin reference for TTGO LoRa32-OLED

Safe Pins to Use

These pins are safe for general GPIO usage without boot or system conflicts

OLED RST

OLED SDA

OLED SCL

SDCard CS

SDCard MOSI

SDCard MISO

SDCard SCLK

DS3231 SDA

DS3231 SCL

LORA MOSI

LORA MISO

LORA SCLK

LORA CS

LORA RST

LORA DIO0

Why Are These Pins Safe?

✓ No boot sequence involvement

✓ No flash/PSRAM connections

✓ No USB or JTAG conflicts

✓ Freely assignable without issues

Pins to Avoid or Use with Caution

Reserved for critical functions. Misuse may cause boot failures, programming issues, or system conflicts.

Strapping Pins

Boot behavior & flash voltage

JTAG Debugging

Low-level debugging interface

USB Pins

USB Serial/JTAG communication

Flash/SPI Pins

Memory & PSRAM connections

UART Serial

Debugging & firmware uploads

PIN	Label	Why Avoid	Type

Useful Links

Datasheets and resources for TTGO LoRa32-OLED

Board Datasheet

Technical specifications

ESP32 Datasheet

Microcontroller reference

TTGO LoRa32-OLED Custom Pin Mapping

Pin configuration and GPIO mapping for TTGO LoRa32-OLED

Digital I/O Pins

Interrupt Pins

Analog Inputs

Pin	Function	ESP Pin	I/O Type	Description
1	OLED RST	GPIO16	output	OLED Reset (V1.0 only)
2	OLED SDA	GPIO4	bidirectional	I2C Data Line (V1.0 only)
3	OLED SDA	GPIO21	bidirectional	I2C Data Line (V1.2+ only)
4	OLED SCL	GPIO15	bidirectional	I2C Clock Line (V1.0 only)
5	OLED SCL	GPIO22	bidirectional	I2C Clock Line (V1.2+ only)
6	SDCard CS	GPIO13	output	SPI Chip Select (V1.6+)
7	SDCard MOSI	GPIO15	bidirectional	SPI Master Out Slave In (V1.6+)
8	SDCard MISO	GPIO2	bidirectional	SPI Master In Slave Out (V1.6+)
9	SDCard SCLK	GPIO14	bidirectional	SPI Clock Line (V1.6+)
10	DS3231 SDA	GPIO21	bidirectional	I2C Data Line (V1.2 T-Fox only)
11	DS3231 SCL	GPIO22	bidirectional	I2C Clock Line (V1.2 T-Fox only)
12	LORA MOSI	GPIO27	bidirectional	SPI Master Out Slave In
13	LORA MISO	GPIO19	bidirectional	SPI Master In Slave Out
14	LORA SCLK	GPIO5	bidirectional	SPI Clock Line
15	LORA CS	GPIO18	output	SPI Chip Select
16	LORA RST	GPIO14	output	LoRa Reset (V1.0 only)
17	LORA RST	GPIO23	output	LoRa Reset (V1.2+ only)
18	LORA DIO0	GPIO26	input	LoRa Interrupt Pin

Legend

Function Pin role

GPIO ESP32 pin

I/O Direction

# Pin number

Default Tools & Configuration

Build and upload settings for TTGO LoRa32-OLED

Setting	Value
Bootloader tool	esptool_py
Uploader tool	esptool_py
Network uploader tool	esp_ota
Bootloader address	`0x1000`
Flash mode	dio
Boot mode	dio
Maximum upload size	1280 KB (1310720 bytes)
Maximum data size	288 KB (294912 bytes)