H2S-Dev V1.2 Basic | LoRa IoT board for rapid development

General description and key features

H2S-Dev board (LoRa IoT Node) is compatible with the Meshtastic decentralized network, Helium IoT network and other LoRa based applications. H2S-Dev board is a ready-to-use, Open source hardware, Arduino compatible, ESP32 based LoRa network sensor development board. It is capable of implementing a number of sensor (Basic and Full variant) and positioning applications (Full variant only). The board is mainly targeted to makers and hobbyists.

H2S-Dev board key features and flexible assembly options including ESP32 and SX1276 LoRa (868 MHz or 915 MHz) modules as well as optional GNSS. A practical powering circuitry is implemented that is capable of powering the board from the programming interface, USB-C and/or optional RPi compatible connector. The LiPo battery controller also charges the battery connected. The soldering area and I2C Crowtail/Grove compatible extensions (on demand for self soldering) allow wiring of significant number of sensors or just connecting devices via I2C interfaces.

H2S-Dev board is built around ESP32 MCU module and LoRaWAN SX1276 based radio module, supporting worldwide radio frequency bands, I2C standard interfaces for connecting various sensors and a place for an optional and relatively cheap integrated GNSS module with small chip antenna on it. The development board also incorporates a standard 7-pin ESP32 serial programming interface to use with any compatible Serial to USB adapter. Set of LED indicators - Power, “1 second” GNSS, Charging and General purpose LEDs are on board for indicating certain activities. USB-C and LiPo battery sockets are available for dual powering with charging circuitry and battery level sensing line routed to a CPU GPIO pin. A development area grid - holes matrix area (4 rows x 8 holes each, 0.1 inch / 2.54 mm pitch) with power and ground points nearby for adding sensors, interfaces, and add-ons is available for furhter experiments. Several GPIOs are routed close to the matrix area to simplify wiring.

Тechnical parameters