OBJEX Link S3LW is a new ESP32-based development board. It is specifically designed to meet a wide range of IoT project power requirements. Whether your project is attached to a wall outlet, dependent on solar, or runs strictly on batteries, OBJEX Link can meet your needs wherever and whenever. This level of flexibility is achieved by including six sets of header connectors on the board, offering granular control over the power supply delivered to individual components. It empowers makers to create projects demanding both extreme low-power operation and high-power functionality, up to 100 W, thanks to the inclusion of USB Power Delivery.

This devkit is an excellent foundation for LoRa/LoRaWAN solutions. It boasts integrated wireless, including 2.4 GHz, 802.11 b/g/n Wi-Fi, and Bluetooth 5 (LE) connectivity, providing a comprehensive suite of communication options with long-range capabilities. The board is compatible with ESP-IDF, Arduino, PlatformIO, MicroPython, and Rust, so whatever platform you prefer, OBJEX Link S3LW will fit your workflow.

The heart of OBJEX Link is the OBJEX ELPM-S3LW, our extreme-low-power module based on the ESP32-S3FN8 and SX1262 chips. It is designed for the development of IoT devices, with a focus on battery-powered and energy-harvesting applications. The module has a power unit designed to adapt to each specific use. It minimizes power consumption with the deep stop mode (1-100 nA). This makes the ELPM-S3LW an excellent choice for industrial applications and devices that require high energy efficiency.

Variants of both products, OBJEX Link S3 and OBJEX ELPM-S3, exclude LoRA wireless.

Test and Deploy Quickly

The OBJEX Link S3LW shines when used for rapid prototyping, developing IoT solutions, and testing and prototyping IoT devices before mass production. Its versatility and ease of integration allow designers to create functional prototypes, letting you iterate and experiment quickly. Accelerate the time it takes you to go from prototype to production with advanced integrations into ecosystems like Home Assistant.

With OBJEX ELPM-S3LW, you can develop different types of projects. Here are two examples that will be part of the campaign.

A battery-powered, low-power device with sensors to detect temperature, humidity, TVOC, and IAQ. There is also a reed switch to use the module as a smart door sensor:

Smart door/window sensor powered by a solar panel. The device is battery-free, instead relying on a supercapacitor for power:

Features & Specifications

OBJEX Link S3LW/S3

• Powered by ELPM-S3LW v1.2 module (see full specs below)
• USB-C Type 2.0 PD PPS 3.0 (21 V 5 A)
• Terminal block for Vbus (USB Type-C PD)
• DC/DC synchronous step-down (V-out: 5 V 2 A)
• USB to UART Bridge (CP2102/CP2104)
• Power switch
• STEMMA 4 Pin - I2C connector
• Size: 30.50 x 84.74 mm (1.2 x 3.34 mm)
• Weight: 16.85 grams (0.59 oz)

The OBJEX Link S3 variant has the same specifications without LoRa.

OBJEX ELPM S3LW/S3

• ESP32-S3FN8 (32-bit, 240 MHz)
• Memory Size: 8 MB Flash
• GPIO: 33 available (7 reserved for LoRa - SPI)
• WiFi - IEEE 802.11 b/g/n-compliant
• Bluetooth 5/ Bluetooth LE
• Interfaces: I²C, I²S, SPI, UART, USB
• RGB status LED (WS2812B)
• Deep Stop Mode, rising/falling edge detector & RTC (1-100 nA)
• Footprint: 18 x 30 mm (0.71 x 1.18 in)
• Weight: 2.30 grams (0.08 oz)

LoRa

• Based on SX1262
• Frequency bands: 862 MHz to 928 MHz
• Signal power: 22 dBm
• Transmission distance: 10 km
• Communication interface: SPI
• 50 Ohm U.FL/pad antenna
• Full compatibility with LoRa and LoRaWAN

The OBJEX ELPM-S3 variant has the same specifications without LoRa.

Open Source

The design files for OBJEX-LINK and OBJEX ELPM will be released on GitHub after the campaign has concluded. For now, you can find datasheets for OBJEX Link S3LW and OBJEX ELPM S3LW on our website.

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