BLE-node-u-blox

u-blox NINA-B3 BLE node, based on nRF52840 and SHTC3

TODO

• 3D enclosure

Energy Budget

• ?? mA active current;
• Wakes every hour;
• 17uA Sleep current;
• CR2032 ~235mAh;

Battery life =

Nordic SDK

• This is based on nRF5_SDK_16.0.0_98a08e2, get yours here: https://www.nordicsemi.com/Software-and-tools/Software/nRF5-SDK/Download

Cloud Gateway

• Raspberry Pi + Grafana + InfluxDB;

https://github.com/ldab/BLE-Weather-Station-Cloud-Gateway

Running the code locally

1. Clone this repo to a local folder > git clone https://github.com/ldab/BLE-node-u-blox
2. Point the $(SDK) @./code/ninab3/blank/ses/libuarte_pca10056.emProject to where you have installed Nordic SDK, for example C:\nRF\nRF5_SDK_16.0.0_98a08e2
3. Like so: macros="CMSIS_CONFIG_TOOL=C:/nRF/nRF5_SDK_16.0.0_98a08e2/external_tools/cmsisconfig/CMSIS_Configuration_Wizard.jar;SDK=C:/nRF/nRF5_SDK_16.0.0_98a08e2"
4. Open the SEGGER Embedded Studio project file located in ./code/ninab3/blank/ses/libuarte_pca10056.emProject

Ref. https://devzone.nordicsemi.com/f/nordic-q-a/44638/how-to-move-an-sdk-example-out-of-the-sdk-tree

Code reminders

• BSP LEDs status https://infocenter.nordicsemi.com/index.jsp?topic=%2Fsdk_nrf5_v16.0.0%2Fexamples_bsp.html&anchor=examples_bsp_states

SHTC3 Low Power mode tradeoff

PCB

Schematic

BOM

Bill of materials

Enclosure

Kown issues, limintations

• .

Final Thoughts or Improvements

• Better battery measurement to avoid current drain;

Credits

• GitHub Shields and Badges created with Shields.io;