Is it possible to stream ant+ sensor data live to Matlab?

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02 May 2020 09:03 AM #46

Yoyo2014 Sr. Member

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Raspberry Pi Ant+ MQTT-Broker:

https://infinityflow.ch/raspberry-pi-ant/

is a script from Reto, 43 years old, happily married and the proud father of a daughter and a son:

https://infinityflow.ch/ueber-mich-2/

He earns their bread and butter in the IT industry. Here you can see all of Retos bikes:

https://infinityflow.ch/bikes/

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Peter Gamma

02 May 2020 09:07 PM #47

Yoyo2014 Sr. Member

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Here are 10 Free Public MQTT Brokers:

https://mntolia.com/10-free-public-private-mqtt-brokers-for-testing-prototyping/

This path should work to stream ANT+ sensor live to Matlab or Python.

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Peter Gamma

03 May 2020 12:53 AM #48

Yoyo2014 Sr. Member

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The domain name LiveTracking.io is for sale now:

https://livetracking.io/de-de

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Peter Gamma

04 May 2020 08:56 AM #49

Yoyo2014 Sr. Member

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I also recommend the blog of https://johannesbader.ch/ «Track Your Heartrate on Raspberry Pi with Ant+»

https://johannesbader.ch/blog/track-your-heartrate-on-raspberry-pi-with-ant/

Johannes Bader, former PhD student of the Swiss Federal Institute of Technology

https://sop.tik.ee.ethz.ch/people/baderj/

who published many papers:

https://scholar.google.com/citations?user=K7g7_S8AAAAJ&hl=en

Also an excellent Swiss quality product.

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Peter Gamma

04 May 2020 02:02 PM #50

Yoyo2014 Sr. Member

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There is a MQTT app for Android with Raspberry Pi support and a lot of positive feetback:

https://play.google.com/store/apps/details?id=net.routix.mqttdash&showAllReviews=true

It was called an easy-to-use MQTT frontend for Android by a user. He was using it with a Mosquitto installation

https://mosquitto.org/

on a Windows PC as a broker and various IOT devices based on Arduino for several weeks - without any problems.

I think this app should also work with Rasperri Pi ANT+ MQTT, Matlab and Python.

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Peter Gamma

04 May 2020 07:06 PM #51

Yoyo2014 Sr. Member

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Nies Kiesling had choosen Influx data base as a target. There is an Influx data base client for Matlab

https://ch.mathworks.com/matlabcentral/fileexchange/68312-influxdb-matlab

and an Influx data base client for Python

https://github.com/influxdata/influxdb-python

Influx data base is helpful to keep sensor data from many sources synchronous.

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Peter Gamma

05 May 2020 12:42 AM #52

Yoyo2014 Sr. Member

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And Nies Kiesling also had choosen Grafana

https://grafana.com/

to visualize sensor data in the web:

https://grafana.com/docs/grafana/latest/features/datasources/influxdb/

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Peter Gamma

05 May 2020 11:18 AM #53

Yoyo2014 Sr. Member

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Discussion about mqtt stability

https://ch.mathworks.com/matlabcentral/answers/491486-mqtt-via-esp8266-connected-but-not-subscribing

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Peter Gamma

05 May 2020 06:15 PM #54

Yoyo2014 Sr. Member

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A direct connection between Rasperri Pi and Matlab or Python is better

https://github.com/Denkschmied/fire-and-ice/wiki/Connecting-Matlab-and-Raspberry-Pi

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Peter Gamma

05 May 2020 11:31 PM #55

Yoyo2014 Sr. Member

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Peter Gamma

05 May 2020 11:40 PM #56

Yoyo2014 Sr. Member

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Raspberry Pi Support from MATLAB to acquire sensor and image data from your connected Raspberry Pi

https://ch.mathworks.com/hardware-support/raspberry-pi-matlab.html

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Peter Gamma

06 May 2020 01:03 AM #57

Yoyo2014 Sr. Member

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Raspi connection to Raspberry Pi board

https://www.mathworks.com/help/supportpkg/raspberrypiio/ref/raspi.html

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Peter Gamma

06 May 2020 04:01 AM #58

Yoyo2014 Sr. Member

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Install a SQLite Database on a Raspberry Pi as a data buffer

https://randomnerdtutorials.com/sqlite-database-on-a-raspberry-pi/

which should be the best database for Raspberry Pi , and read it out from Matlab, to avoid the need of a constant connection between Matalb and Rasperri PI.

Is there a better way to get sensor data into Matlab?

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Peter Gamma

06 May 2020 05:01 AM #59

Yoyo2014 Sr. Member

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No need for MQTT anymore. And the sensor data base could also be read out by other applications than Matlab.

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Peter Gamma

06 May 2020 05:56 AM #60

Yoyo2014 Sr. Member

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The sensor readings can then be published to SQLite Database in a second part (Python Web Server MQQT Client)

:

https://randomnerdtutorials.com/esp8266-publishing-dht22-readings-to-sqlite-database/

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Peter Gamma

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