LILYGO T-ECHO BME280 Meshtastic LoRa SX1262 Wireless Module 433/868/915MHz nRF52840


Description

Specification

MCU

NRF52840

FLASH

2MB

RAM

2MB

Bus Interfaces

UART, SPI, TWI, PDM, 12S, QSPI

Wireless Connectivity

Bluetooth 5, Thread, Bluetooth Mesh, ANT, 802.15.4, Zigbee With/Without BME280 temperature pressure sensor

SX1262 LoRa Transceiver

Long Range, Low Power Global frequency coverage 433, 868, 915Mhz

Enclosure material

ABS

Version

Normal version / BME280 version

Battry Capacity

850mAh

1.54-inch SPI E-Paper Display

Grey level

2

Resolution

200x200

Full refresh time

2S

L76K Multi-System Positioning GNSS module

Support System

GPS, GLONASS, BeiDou, QZSS

Support Function

LNA, SAW Filter, AGNSS, 1PPS Improved receiving and anti-interference attributes

Using Arduino IDE

  1. Download Arduino IDE

  2. Open Arduino, open preferences-> add https://adafruit.github.io/arduino-board-index/package_adafruit_index.json to the board installation manager address list

  3. Open the board installation manager, wait for the index update to complete, select 'Adafruit nRF52 by Adafruit' and click install

  4. After the installation is complete, select 'Nordic nRF52840(PCA10056)' or 'Nordic nRF52840 DK' in the board list

  5. Copy all the folders in the lib directory to "C:\User\<YourName>\Documents\Arduino\libraries"

  6. Open the sketch => tool => port, select the port of the connected board, and click upload

Using PlatformIO

  1. Install VSCODE and Python

  2. Search for the PlatformIO plug-in in the VSCODE extension and install it.

  3. After the installation is complete and the reload is completed, there will be a small house icon in the lower left corner. Click to display the Platformio IDE home page

  4. Go to file - > Open folder - > Select the LilyGO-T-ECHO folder and click the (√) symbol in the lower left corner to compile (→) for upload.

  5. If you use USB to download the firmware (platformio.ini upload_protocol = nrfutil), you need to double-click reset button to enter DFU mode before downloading

Pin map

Antenna Actual Test Reference

Application

Precautions

  1. Pins on boards are not compatible with the official SDK.If you want to use the SDK, pay special attention to the pin definition.

  2. Use Adafruit_nRF52_Arduino by default, so Adafruit_nRF52_Bootloader has been burned in the factory, if you use nRF5-SDK Programming the board will lose the original bootloader

  3. If you need to use nRF5-SDK for programming, please click the link to download nRF5-SDK

  4. NFC Function is not supported in Adafruit_nRF52_Arduino, please use nRF5-SDK for programming

  5. Flash will choose MX25R1635FZUIL0 or ZD25WQ16B according to the availability.Pay attention to the difference when using.

  6. If you need to burn a new bootloader, see Burning a new bootloader

Battery life

Current consumption from 3.7 Volt battery:

Mode
Average current

Active backlight OFF

42 mA

Active backlight ON

55 mA

Sleep

0.25 mA

Operating time from a full charge depends on your actual battery capacity.

The below figure represents a more specific test, and you can use the example Sleep_Display to write your low-power device program.

Github:

T-Echo

Last updated

Was this helpful?