T-LoRa Pager Combines ESP32-S3, LoRa, NFC, and GNSS in Handheld IoT Device

The T-LoRa Pager is a compact, programmable IoT development device designed by LILYGO. It integrates LoRa connectivity, NFC capabilities, GNSS positioning, and motion sensing via an embedded IMU, all within a portable form factor.

Powered by the ESP32-S3 microcontroller, the device includes 16MB of flash memory and 8MB of PSRAM. The board features an RTC circuit, GPIO expansion headers, battery management circuitry, an audio codec, and a MicroSD card slot for external storage.

The wireless communication module is based on the SX1262 LoRa transceiver, supporting sub-GHz bands (433/868/915/920 MHz). Versions based on the LR1121 also support 2.4GHz LoRa. Positioning functionality is provided by the MIA-M10Q GNSS module, which supports concurrent tracking of up to four satellite systems.

A 2.33-inch IPS display (ST7796) with a 480×222 resolution is included for visual feedback. User input is enabled through a QWERTY keyboard and a rotary encoder, as demonstrated in the video below.

Sensor functionality is enhanced with the BHI260AP smart sensor, which supports AI-assisted motion detection using embedded IMU capabilities. NFC features are implemented using the ST25R3916 module, which supports multiple operating modes, including reader/writer, card emulation, and active or passive peer-to-peer communication.

Audio functionality is provided by the RC01812 codec, supporting both microphone and headphone jack connections. Power is delivered via USB Type-C, with a 5V input at 500mA. Additional support circuitry includes a BQ27220 battery fuel gauge, a BQ25896 charging IC, and a DRV2605 haptic driver.

Software development is supported through the Arduino IDE, ESP-IDF, and Visual Studio Code. Some documentation is available on the product’s GitHub page.

The mechanical design includes foldable dual antennas, a magnetic wireless charging pad, M2 screw holes for mounting, and a compact enclosure measuring 106 x 89 x 23 mm.

Further Information

At the time of publication, the T-LoRaPager is listed at $105.44, though it is currently shown as out of stock.