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Download Arduino IDE
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Open Arduino, open preferences-> add https://adafruit.github.io/arduino-board-index/package_adafruit_index.json to the board installation manager address list
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Open the board installation manager, wait for the index update to complete, select 'Adafruit nRF52 by Adafruit' and click install
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After the installation is complete, select 'Nordic nRF52840(PCA10056)' in the board list
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Copy all the folders in the lib directory to
"C:\User\<YourName>\Documents\Arduino\libraries"
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Open the sketch => tool => port, select the port of the connected board, and click upload
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Search for the PlatformIO plug-in in the VSCODE extension and install it.
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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
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Go to file - > Open folder - > Select the LilyGO-T-ECHO folder and click the (√) symbol in the lower left corner to compile (→) for upload.
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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
Product | Product Link |
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T-Echo | AliExpress Amazon Tindie |
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Need to use the files in the lib directory, it includes:
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Pins on boards are not compatible with the official SDK.If you want to use the SDK, pay special attention to the pin definition.
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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
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If you need to use nRF5-SDK for programming, please click the link to download nRF5-SDK
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NFC Function is not supported in Adafruit_nRF52_Arduino, please use nRF5-SDK for programming
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Flash will choose MX25R1635FZUIL0 or ZD25WQ16B according to the availability.Pay attention to the difference when using.
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If you need to burn a new bootloader, see Burning a new bootloader
Current consumption from 3.7 Volt battery:
Mode | Average current |
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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.