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Helium IoT Network Sensor Development board | H2S-Dev V1.2
What is that project about?
The project is intended to simplify the development of open source Helium connected nodes - from sensor devices to tracking modules with battery power. You can see on the picture there is a small development area where one can solder sensors or other expansion modules to connect. General purpose pins from the microcontroller together with powering are routed to that area. I also included LiPo battery charger and, even RaspberryPi compatible connector with I2C interfaces and power line routed!
The Helium adventure started with a hotspot antenna installed near the home window…
At that time I found the potential of the People’s network (The Helium network, https://www.helium.com/) to connect and transfer data securely and reliably around the world. I learned there is a constant growth of commercial Helium devices one can buy and use. Unfortunately the open source projects tailored according to Helium capabilities and advantages are not quite popular so far…
Project description
Helium IoT Network Sensor Development board (H2S-Dev board) is a ready-to-use, Open source hardware, Arduino compatible, LoRaWAN Helium network sensor development board. It is capable of implementing a number of sensor and positioning applications. The board is mainly targeted to makers and hobbyists.
H2S-Dev board key features and flexible assembly options including ESP32 and SX1276 LoRa worldwide 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 RPi compatible connector. The LiPo battery controller also charges the battery connected. The soldering area and I2C extensions allow wiring of sensors and connecting devices via I2C interfaces.
The most recent version of the Helium IoT Network Sensor Development board (H2S-Dev) is V1.2
https://github.com/hobbyiot/HELIUM-SENSORS/tree/main/H2S-Dev%20V1.2
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 the 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. There is also 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. Several GPIOs are routed close to the matrix area.
Technical specifications
H2S-Dev board V1.2 assembly variants
Important Note:
The Bill of materials (BOM) provided is covering the H2S-Dev Basic variant. For Full variant please contact the autor.
Direct orders
Direct orders are available for the H2S-Dev board Basic at our store webpage. Both EU (LoRa at 868 MHz) and US variants (LoRa at 915 MHz) are on stock now!
https://www.elecrow.com/helium-iot-network-sensor-development-board-h2s-dev-v1-2-basic.html
More information
GitHub: https://github.com/hobbyiot/HELIUM-SENSORS
LinkedIn: https://www.linkedin.com/company/hobbyiot
Web: https://www.hobbyiot.net/
Patreon: https://www.patreon.com/HobbyIoT
