Free Text Messages with LILYGO T Echo Meshtastic based on LoRa SX1262 & NRF52840
With these new devices, you can send free text messages over a long distance without using any GSM network and Internet. You can also use these devices as GPS trackers and using the Meshtastic cell phone application you can check the longitude and latitude values I know it sounds quite unbelievable but it’s true.
And the coolest thing is these devices are upgradable, you can update the firmware which of course I will be explaining in this video. Anyway, let’s go ahead and start the unboxing. So, without any further delay let’s get started!!!
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Project Description:
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Inside each box you will find the LILYGO T-Echo device, an antenna, and a C-type USB cable. First let’s go ahead and connect the antenna’s.
So, guys these are the Lilygo T-echo devices and all the information is printed right on the top of the box.
It has a GPS module and its TX, RX, Wake, Reset, and PPS pins are connected to these pins.
It has RGB programmable LEDs connected to these three pins.
This is a 1.54 inch SPI E-Paper display and its MISO, MOSI, SCLK, CS, DC, RST, BUSY, and BL pins are connected to these pins. Its Grey Level is 2, resolution is 200x200, and the Full refresh time is 2 seconds.
LILYGO T-Echo device is based on the nRF52840 microcontroller unit.
It’s based on the LoRa SX1262 long range wireless transceiver module and you can see its connection details.
This is the LoRa Antenna.
It has a 2MB Flash.
It also has a BME280 sensor and its SDA and SCL pins are connected to these Pins.
Its also has an RTC, BAT_ADC, and POWER_EN.
There is one touch button on the Top connected to P0.11 and two buttons on the LEFT side. I will talk about these buttons in detail as these have multiple functions.
Type C port is available on the right side. And
It also has NFC Antenna on the bottom side.
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Amazon Purchase links:
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T-Echo LilyGo on Amazon:
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T-Echo LilyGo official product page:
www.lilygo.cc/products/t-echo
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