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January 21, 2026January 21, 2026 by Debashis Das - No Comments

LilyGO T-Display S3 Pro LR1121 devkit adds Sub-GHz and 2.4GHz LoRa, audio support

LilyGO has recently released the T-Display S3 Pro LR1121, a new ESP32-S3 development kit with a Semtech LR1121 transceiver for universal LoRa connectivity across the sub-GHz and 2.4GHz bands. The board is an update to the earlier T-Display S3 Pro, which features a slimmer design and a 2.33-inch touchscreen display, but this new LR1121 variant adds sub-GHz and 2.4 GHz LoRa/(G)FSK support along with a voice communication kit that includes a MAX98357A I2S speaker amplifier, a PDM/I2S digital microphone, vibration motor, and a RTC. There are also programmable buttons, Qwiic connectors, and a 1/4-inch tripod mount, as well as a 2000 mAh Li-ion battery, USB-C for power, and ultra-low sleep current. These features make it suitable for applications such as LoRa walkie-talkies, Meshtastic nodes, voice-enabled IoT devices, portable dashboards, and experimental long-range wireless systems. T-Display S3 Pro LR1121 specifications: Wireless MCU – Espressif ESP32-S3R8 CPU – Dual-core Tensilica LX7 microcontroller […]

January 20, 2026January 20, 2026 by Jean-Luc Aufranc (CNXSoft) - No Comments

WisMesh 1W Booster Starter Kit targets high-power Meshtastic solutions

RAKwireless WisMesh 1W Booster Starter Kit is a high-power Meshtastic solution based on Nordic Semiconductor nRF52840 wireless SoC, Semtech SX1262 RF transceiver, and SKY66122 power amplifier for extended mesh range. It’s built from three modules from the WisBLock IoT ecosystem, and besides a power amplifier for longer Tx range and better penetration through walls, it also features an integrated RF filter for enhanced reception performance. It offers an alternative to the LILYGO T-Beam 1W with an ESP32-S3 + Semtech SX1262 LoRa transceiver + PA+LNA design, which we covered just last week. WisMesh 1W Booster Starter Kit specifications and technical details WisMesh1W Booster Starter Kit content and specifications: WisBlock RAK3401 Core module SoC – Nordic nRF52840 CPU core – Arm Cortex-M4F @ Memory – 348KB SRAM Storage – 1MB Flash I/O ports – UART/I2C/SPI/ADC/GPIO WisBlock RAK13302 1W LoRa transceiver module Semtech SX1262 LoRa transceiver SKY66122 signal booster Integrated RF filter for […]

January 12, 2026January 13, 2026 by Debashis Das - 10 Comments

LILYGO T-Beam 1W – An ESP32-S3 + SX1262 high-power LoRa dev board with 32 dBm output, GNSS support

The LILYGO T-Beam-1W is an ESP32-S3-based high-power LoRa development board featuring an SX1262 RF transceiver, an onboard 1W power amplifier (32 dBm), a L76K GNSS module, a 1.3-inch SH1106 OLED, a microSD slot, USB-C, Qwiic connectors, and an AXP2101 PMU. The board runs on a 7.4V battery and includes a cooling fan for high-power RF operation. We first wrote about the original LILYGO T-Beam (then branded as TTGO) in 2018, and since then, the company introduced various revisions of the T-Beam as it became popular. The T-Beam 1W is the most powerful version so far, with a built-in 1 Watt amplifier that allows the board to transmit data over longer distances without needing to buy separate, bulky amplifiers. LilyGO T-Beam-1W Specifications: Core module – Espressif Systems ESP32-S3-WROOM-1 SoC – ESP32-S3 CPU – Dual-core LX7 processor with up to 240MHz Memory – 512KB SRAM, 8MB PSRAM Storage – 384KB ROM Wireless – […]

December 29, 2025December 29, 2025 by Debashis Das - No Comments

LoRa, BLE, and GNSS tracker supports open-source software, solar charging, outdoor and indoor tracking

Designed by Ruictec in China, the TD04 is a LoRa-based low-power tracker that also features BLE and dual-band GNSS. It supports both indoor and outdoor positioning, and is suitable for fleet management, asset tracking, and geofencing over public or private LoRaWAN networks with minimal maintenance. The device combines GNSS (L1/L5) for outdoor positioning with BLE-based indoor tracking. It automatically switches between the two to optimize accuracy and power usage, delivering around 1–2 m accuracy outdoors and 2–4 m indoors. It is LoRaWAN 1.0.3-compliant, supports OTAA and ABP, and operates across multiple regional bands (EU868, US915, IN865, AS923, and others). Other features include a built-in motion sensor (G-sensor), configurable reporting and heartbeat intervals, iBeacon support, optional Bluetooth gateway mode, BLE-based configuration, OTA updates, and batch firmware upgrades. The device is powered by a 6000 mAh rechargeable battery and support 1.3 W solar panel input, enabling up to six months of standby […]

December 19, 2025 by Debashis Das - No Comments

LILYGO T-Echo Plus off-grid LoRa communicator features a climbing hook for hiking, cycling, and remote communication

The LILYGO T-Echo Plus is another off-grid LoRa communicator, similar to Blackout Comms, ThinkNode M2, and Wio Tracker L1 Pro, but it features a metal attachment loop (designed like a climbing hook) for use in hiking, cycling, and off-grid environments. Built around a Nordic Semi nRF52840 MCU, it supports Bluetooth 5, Thread, Zigbee, and 802.15.4. It also adds an SX1262 LoRa transceiver, a 1.54-inch 200×200 SPI E-Paper display, and an L76K GNSS module. Other features include a 6-axis IMU (BHI260AP), a vibration motor, a buzzer, and a larger 2400mAh battery, along with a 1/4-inch mount and a “climbing finger loop” for gear attachment. Additional features include an optional BME280 sensor, Grove expansion, all in a rugged and compact enclosure with a long external antenna for extended LoRa range. LILYGO T-Echo Plus Specifications: SoC – Nordic Semiconductor nRF52840 CPU – 32-bit Arm Cortex-M4F microcontroller @ 64 MHz Memory/Storage – 2 MB Flash, […]

November 28, 2025 by Debashis Das - No Comments

DIN-rail mountable LoRaWAN control terminal offers RS485, analog input, and digital I/Os

The DFRobot LoRaWAN Control Terminal is a compact, DIN-rail mountable industrial IIoT terminal that features long-range LoRaWAN connectivity with local sensing and control capabilities. It’s designed for industrial, agricultural, and building-automation scenarios that need reliable, low-power wireless communication up to 4 km. The terminal supports the standard LoRaWAN protocol (OTAA/ABP, Class A/C) with up to 4 km line-of-sight range and works with private gateways or public networks like TTN. It integrates a 0–10V analog input, optically isolated digital inputs, and RS485/Modbus sensor support, along with a built-in relay output for direct actuation. There’s also support for visual rule-based automation for relay switching, RS-485 commands, or uplink messages; the device continues operating offline using preset logic. The unit operates from 12–24V, includes adjustable transmission parameters, and supports firmware upgrades and factory resets. DFRobot LoRaWAN Control Terminal specifications: SoC/Main Controller – TBD Wireless LoRaWAN 863–870 MHz, 16 dBm Tx power (EU, DFR1120-868) LoRaWAN […]

November 28, 2025 by Debashis Das - No Comments

EBYTE ECM50-A industrial ESP32-S3 controller offers RS232, RS485, DI/DO, Ethernet, and 4G LTE or LoRa connectivity

EBYTE ECM50 A07 ESP32 S3 Industrial Computer

EBYTE ECM50-A is a compact, industrial-grade programmable controller built around the ESP32-S3 wireless SoC designed for IoT and edge control applications, such as environmental monitoring and remote telemetry in the smart industry, energy, and utilities sectors As it’s built around the ESP32-S3, it features Wi-Fi and Bluetooth LE, but the controller also supports Fast Ethernet, 4G LTE or LoRa connectivity, and offers RS232/RS485, two digital inputs, two digital outputs/relays, and two analog inputs (4–20 mA/12-bit), as well as a microSD card slot for data logging. The ECM50-A also implements various communication protocols like TCP/IP, HTTP, MQTT, and Modbus TCP master/slave. The industrial controller is designed to operate in the -40°C to 85°C temperature range. EBYTE ECM50-A specifications: Wireless Module – ESP32-S3-WROOM-1 SoC – Espressif Systems ESP32-S3R8 CPU – Dual-core Tensilica LX7 up to 240 MHz with vector extension for AI/ML workloads RAM – 512KB SRAM, 8MB PSRAM ROM – 284KB Wireless […]

November 27, 2025November 28, 2025 by Debashis Das - 3 Comments

Heltec WiFi LoRa 32 (V4) – An ESP32-S3 off-grid LoRa/Meshtastic communicator with solar input, GNSS, and 28dBm Tx Power

While searching AliExpress, I found the WiFi LoRa 32 (V4) shell set, another ESP32-S3-based off-grid LoRa/Meshtastic communicator designed for long-range wireless applications. Compared to devices like Blackout Comms, Wio Tracker L1 Pro, and ThinkNode M2, this device features built-in solar charging, optional GNSS, a removable battery, and a higher transmit power. The device features a Semtech SX1262 LoRa transceiver, an amplifier delivering up to 28 ± 1 dBm transmit power, along with integrated Wi-Fi and Bluetooth 5/Mesh connectivity. It adds solar charging, an 8-pin GNSS connector, upgraded battery management, gold-plated 40-pin headers, and a fully protected 0.96-inch OLED, as well as a few I/Os for expansion. The USB-C port includes ESD and short-circuit protection, while dual IPEX connectors support both LoRa and 2.4 GHz antennas. Heltec WiFi LoRa 32 (V4) specifications: SoC – Espressif Systems ESP32-S3 CPU – Dual-core 32-bit microcontroller @ 240MHz Memory – 512KB SRAM, 2MB PSRAM Storage – […]