TTGO LoRa32-OLED
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
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Technical Specifications
Complete technical specification details for TTGO LoRa32-OLED
Quick Setup
Copy-paste configs for TTGO LoRa32-OLED - auto‑generated from this board's exact hardware specs.
In Arduino IDE 2 select Ttgo Lora32 from the esp32 by Espressif package. In PlatformIO use board = esp32dev. ESP32 · 240 MHz · 4MB · DIO.
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.
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.
Pins to Avoid or Use with Caution
Reserved for critical functions. Misuse may cause boot failures, programming issues, or system conflicts.
| Pin | Label | Why Avoid | Type |
|---|
Useful Links
Datasheets and resources for TTGO LoRa32-OLED
TTGO LoRa32-OLED Custom Pin Mapping
Pin configuration and GPIO mapping for TTGO LoRa32-OLED
| 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 |
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) |
The TTGO LoRa32-OLED uses esptool_py for uploads , esp_ota for OTA updates, and esptool_py bootloader at 0x1000.
Flash mode: dio | Boot mode: dio
Max sketch size: 1280 KB | Max data size: 288 KB
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