{"id":89983,"date":"2019-10-19T14:45:37","date_gmt":"2019-10-19T14:45:37","guid":{"rendered":"https:\/\/randomnerdtutorials.com\/?p=89983"},"modified":"2019-10-19T14:53:18","modified_gmt":"2019-10-19T14:53:18","slug":"ttgo-lora32-sx1276-arduino-ide","status":"publish","type":"post","link":"https:\/\/randomnerdtutorials.com\/ttgo-lora32-sx1276-arduino-ide\/","title":{"rendered":"TTGO LoRa32 SX1276 OLED Board: Getting Started with Arduino IDE"},"content":{"rendered":"\n

The TTGO LoRa32 SX1276 OLED<\/strong> is an ESP32 development board with a built-in LoRa chip and an SSD1306 0.96 inch OLED display. In this guide, we’ll show you how to: send and receive LoRa packets (point to point communication) and use the OLED display with Arduino IDE.<\/p>\n\n\n\n

\"TTGO<\/figure><\/div>\n\n\n\n

For an introduction to LoRa communication, read: ESP32 with LoRa using Arduino IDE<\/a>.<\/p>\n\n\n\n

TTGO LoRa32 SX1276 OLED Overview<\/h2>\n\n\n\n

The TTGO LoRa32 SX1276 OLED is a development board with an ESP32, a built-in LoRa chip and an SSD1306 OLED display. This is the OLED model display we use in most of our electronics projects (Guide for OLED display with ESP32<\/a>).<\/p>\n\n\n\n

\"<\/figure><\/div>\n\n\n\n

The board also features several GPIOs to connect peripherals, PRG (BOOT) and RST buttons, and a lithium battery connector. For a more in-depth overview of this board, read: TTGO LoRa32 SX1276 OLED Review<\/a>.<\/p>\n\n\n\n

Where to buy?<\/h3>\n\n\n\n

You can go to the TTGO LoRa32 SX1276 OLED page on Maker Advisor<\/a> to find the best price at different stores. To complete this tutorial, you’ll need two <\/strong>TTGO LoRa32 boards<\/a>.<\/p>\n\n\n\n

\"TTGO<\/a><\/figure><\/div>\n\n\n\n

TTGO LoRa32 SX1276 OLED<\/h2>\n\n\n\n

The following figure shows the TTGO LoRa32 OLED board pinout.<\/p>\n\n\n\n

\"<\/figure><\/div>\n\n\n\n

The OLED displays communicates using I2C communication protocol<\/a>. It is internally connected to the ESP32 on the following pins:<\/p>\n\n\n\n
OLED<\/strong> (built-in)<\/td>ESP32<\/strong><\/td><\/tr>
SDA<\/strong><\/td>GPIO 4<\/span><\/td><\/tr>
SCL<\/strong><\/td>GPIO 15<\/span><\/td><\/tr>
RST<\/strong><\/td>GPIO 16<\/span><\/td><\/tr><\/tbody><\/table>\n\n\n\n

The SX1276 LoRa chip communicates via SPI communication protocol, and it is internally connected to the ESP32 on the following GPIOs:<\/p>\n\n\n\n
SX1276 LoRa<\/strong><\/td>ESP32<\/strong><\/td><\/tr>
MISO<\/td>GPIO 19<\/span><\/td><\/tr>
MOSI<\/td>GPIO 27<\/span><\/td><\/tr>
SCK<\/td>GPIO 5<\/span><\/td><\/tr>
CS<\/td>GPIO 18<\/span><\/td><\/tr>
IRQ<\/td>GPIO 26<\/span><\/td><\/tr>
RST<\/td>GPIO 14<\/span><\/td><\/tr><\/tbody><\/table>\n\n\n\n

Recommended reading<\/strong>: ESP32 Pinout Reference Guide<\/a><\/p>\n\n\n\n

Install ESP32 Boards on Arduino IDE<\/h2>\n\n\n\n

To program the TTGO LoRa32 board, we’ll use Arduino IDE. So, you must have Arduino IDE installed as well as the ESP32 add-on. Follow the next guide to install the ESP32 package on Arduino IDE, if you haven’t already: <\/p>\n\n\n\n