LILYGO® TTGO T Echo Introduce 1 LILYGO® TTGO T Echo is a version evolved from LILYGO T BEAM 2 At the beginning of the design more consideration was to adapt to Meshtastic and SoftRF so Bluetooth and low power consumption were considered when designing and NRF52840 Advanced Bluetooth 5 was selected Thread and Zigbe multiprotocol SoC 3 The LORA function continues T BEAM s LILYGO SX1262 version functional module 4 T SX1262 wireless transceiver module using Semtech SX1262 LORA RF transceiver chip design working in the 868 915MHz ISM frequency band integrated high stability TCXO 32MHz crystal oscillator half duplex transceiver module power up to 22dBm receiving sensitivity 139dBm Automatic transceiver Switching internal transmission and reception channel isolation advanced LORA spread spectrum communication technology strong anti interference and privacy can realize long distance wireless data transmission and reception Github Basic Example https github com Xinyuan LilyGO LilyGO T Echohttps github com lyusupov SoftRF wiki Badge Edition SoftRF https github com lyusupov SoftRF wiki SoftRF Configuration ToolApplication scenarios DIY creation LoRa networking GPS positioning IOT terminal controlle Stem education productFeatures of the module Multisatellite positioning system L76K is a support multisatellite system GPS BeiDou GLONASS QZSS multi system joint positioning and single system independent positioning support AGNSS function built in