uva-dsi / sensenet Goto Github PK

Source and documentation files for the SDS sensor network

License: Creative Commons Attribution Share Alike 4.0 International

C 32.43% C++ 54.62% Makefile 6.19% Roff 0.28% Python 1.44% Shell 1.55% CMake 0.04% Objective-C 0.01% Jupyter Notebook 0.67% Processing 0.38% Assembly 0.22% GDB 2.17%

sensenet's Introduction

Sensenet: networked environmental sensing for all

This repository contains the documentation for the 'Sensenet' project. Here you will find the software and hardware sources for the backend, frontend, and sensor devices we use.

What is included in this repository

We organized projects in folders with their resources (hardware, firmware, software, datasheets, and relevant documentation).

We also included 'playbooks' for the backend configuration under the directory 'ansible' and 'conf'. They are meant to provision the complete backend which includes: MQTT broker (mosquitto), timeseries database (influx-db), and a visualization tool (Grafana). For more info about the line protocol used for the timeseries db, check our documentation.

Each directory contains information about the sensors we are testing. For more details, check out the 'sensor-specification' document and the 'datasheets' directory.

Implementations

We use different sensors, microcontrollers, and tools for different implementations. You can get more information about each set-up following the links below:

Contact and licensing info

Check the AUTHORS file for the list of contributors. For more information about each project, check the file CONTRIBUTORS.

All software is licensed as GPLv3; all hardware is licensed as CERN-OHL-S-v2, and all documentation is released as 'CC-BY-SA-4.0 International', unless specified in the LICENSE file included in the directory or in the header of source files.

Happy environmental sensing and hw hacking!

sensenet's People

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sirfragles leonardomurillo dwe2he

sensenet's Issues

Test I2C, UART, other serial

Most sensors will connect using these protocols, so they must be tested functional.

Add detailed silkscreening

Add silkscreen to board for

Pins
Component values
etc.

Finish board layout / routing

Work on board layout has started, routing is pending for the Big Dot board.
This task depends on the issue #17

PMS Idle Power Draw

The Feather M0 LoRa draws about 0.37mA of current in idle. When the PMS is connected and the RESET held high, it runs at 1.7mA. If we could instead disconnect power from the PMS entirely using a MOSFET or BJT, we might be able to save that little bit of power and significantly increase the battery life of the device.

Check header spacing for breadboards

Make sure that the GPIO and other pins will fit onto a standard breadboard.

Optimal LoRa Radio Settings

Right now, the LoRa radio reaches 130mA of current when sending packets. It is possible to change the parameters on the radio in a way that might reduce this current draw, especially in the circumstance that the user is very close to their gateway.

Feather M0 Idle Power Draw

The Feather M0 LoRa draws about 0.37mA of current when idling using the sleepydog library. It would be ideal if we could push this down much further to the 0.01 or even 0.001 mA range and we should begin to explore other methods for doing this or other boards entirely that will be able to go lower than the m0 can possibly go.

SCD Idle Power Draw

When the SCD is connected and taking readings, it increases idle power draw by about 4.3mA. When it is immediately disabled via sending 0x0104 on the I2C bus in setup() this is not an issue. However, when it is disabled and then re-enabled and read from and then disabled again, the current draw never goes back down. Could solve with a MOSFET or BJT if space allows.

Write Arduino test suite

To make testing easier, can write an Arduino program that helps the user test each sensor, I/O, etc.

Find larger SMD footprints

To make sure that the kit is accessible to people just learning to do SMD soldering, we can ensure that we use large parts where possible, and also expand the size of the pads.

Finish schematics review

Pending the final review of the schematics:

SAML21 pinout
KiCad footprints
Include data sheets / partnumbers
3D models for kicad