LILYGO TTGO T-Echo is a version evolved from LILYGO T-BEAM. At the beginning of the design, more consideration was needed to adapt to Meshtastic. So Bluetooth and low-power consumption were considered when designing, and NRF52840 Advanced Bluetooth 5 was the selected thread and Zigbee multiprotocol SoC.
The LORA function continues T-BEAM's LILYGO SX1262 version functional module.
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
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 |
| Battery 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 |
Technology Support [Github]
If you need technical support please check the link to find more details.
Basic Example:
https://github.com/Xinyuan-LilyGO/LilyGO-T-Echo
Application scenarios
- DIY creation
- LoRa networking
- GPS positioning
- IOT terminal control
- Stem education product
Features of the module
Multi-satellite positioning system L76K supports multi-satellite system (GPS, BeiDou, GLONASS, QZSS), multi-system joint positioning, and single system independent positioning, support AGNSS function, built-in low noise amplifier, and surface filter, can provide users GNSS module with fast, accurate and high-performance positioning experience.
Compared with a single GPS system, the high-precision positioning multi-satellite system greatly increases the number of visible and usable satellites, improves positioning accuracy, and can achieve stable high-precision positioning even in complex urban environments.
It supports the AGNSS function, which can greatly Reduce the time for the first positioning, The built-in low-noise amplifier, can achieve high sensitivity, high-precision positioning, and fast signal capture and tracking, even under weak signal conditions can also ensure a good positioning performance, built-in surface acoustic filter, can greatly The anti-interference ability of the module is enhanced, and the active antenna detection circuit and protection circuit are integrated inside to protect the module and the active antenna from damage.
The display uses a 1.54-inch electronic paper display with front light, 200x200 resolution 1.54 front LED E-paper, and it can be used in a dark environment.
Product Display
Size
Appearance Details
