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
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
🔌 USB
🛰️ Connectivity
🧠 Microcontroller
✨ Features & Pins
- • OLED Screen
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
💡 Why Are These Pins Safe?
⚠️ Pins to Avoid or Use with Caution
Reserved for critical functions. Misuse may cause boot failures, programming issues, or system conflicts.
Boot behavior & flash voltage
Low-level debugging interface
USB Serial/JTAG communication
Memory & PSRAM connections
Debugging & firmware uploads
| 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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