Hi @Geethesh, Did you find any solution?

Update - Meeting Summary:

Agenda: Sensor Selection and Connectivity option
Time & Date : 10.15 PM to 11.20 PM (23/Sep/2019)
Attendees: Swalah, Akash, Rafi, Alex and Salman

We started the discussion from what we have done so far, and we know that we were stuck at sensor and connectivity selection.

Cellular over LoRa WAN: LoRa WAN is not a good option since we need to set up the complete infrastructure from scratch. Also currently we are only planning to deploy 10 test nodes, it will not be worth setting it up just for that. On the other side, Cellular is already an established network which is feasible to manage 10 devices and can be implemented rapidly. Thus we are planning to go with cellular in the first batch. (Please share your feedback too, it's very important).

Sensor parameters: After got into a conclusion on the connectivity, we started discussing the sensor parameters to be collected for the analysis and prediction. They are :
-> Water level (High Priority )
-> Water Quality
-> River Flowmeter
-> Rain Gauge

Since we only got a few sensors details in past weeks, we decided to list them again based on the parameters and priority. We distributed them based on attendees interest.

ToDo:
-> All members are requested to submit sensor details before the next meeting which is scheduled for 7th December 2019 (High Priority)
-> Documentation: If possible add our Mission and Vision to our GitHub page

NB: Next team meeting will be on 7th December 2019 from 09.00 PM to 10:00 PM

Hi @kowshik1729,

This is an interesting question, Traditionally we are using mixers, filters, amplifiers, modulators/demodulators, detectors, etc to build a radio communication system and it's tightly coupled with hardware. And there are many types of frequency modulation like FM, AM, FSK, LoRa etc.

Capture.JPG

(Source : https://en.wikipedia.org/wiki/Radio)

To generate a different band we need to use a specific combination of mixers, filters, amplifiers, modulators/demodulator, also most of the scenario we only use a specific frequency to communicate in cost-efficient ways like 2.4 GHz for WiFi and Bluetooth but we use different modulations like GFSK in BT Classic and DSSS, FHSS in IEEE802.11 etc. And building many different combinations of mixers, filters, amplifiers are not cost-effective and economic.But using the SDR (Software Defines Radio ) we can achieve this,

A basic SDR system may consist of a personal computer equipped with a sound card, or other analogue-to-digital converter, preceded by some form of RF front end. Significant amounts of signal processing are handed over to the general-purpose processor, rather than being done in special-purpose hardware (electronic circuits). Such a design produces a radio which can receive and transmit widely different radio protocols (sometimes referred to as waveforms) based solely on the software used. (Source: https://en.wikipedia.org/wiki/Software-defined_radio)

So as an answer to your question, yes we can generate radio frequency but it's high cost and not economical, also with the help of the SDR system we can solve the issues.

Resource :

You can also try SDR via online using https://eshail.batc.org.uk/nb/ , it was hosted at Goonhilly Earth Station in Cornwall, England.

Woow awesome article...I have a little query here. I have found recently that we can stream Audio using ESP32 over BLE. So, in this article, it is told that the individual streaming of audio is possible. Which means do they have two BLE's in two ear pods working collaboratively when used for both ears and working individually when streamed individually?

Arduino also providing Portenta Carrier board that will add extra capabilities to your H7 board

1578338065-portentacarrier-1.jpg

The Portenta Carrier exposes all of the extra capabilities of the processor on your microcontroller board through connectors and peripherals that do not physically fit on it. There are connectors for USB, RJ-45, CAN bus, audio in and out lines, camera, DisplayPort, etc.

This design expands the default communication ports of Portenta boards to other wired and wireless protocols. Gigabit Ethernet will let you transform your board into a dedicated access point, a network drive, or even a serial-to-ethernet bridge. Adding a SIM card to the board makes it possible to connect to NBIoT or GPRS networks. Thanks to its LoRa connectivity you can design your own gateway to host your wireless sensor network.

Adding an 8-bit camera sensor to the Portenta Carrier camera connector will help you implement any kind of computer vision application. And if the onboard computing power is not enough, you could enhance your board’s AI capabilities by adding state-of-the-art Machine Learning modules through the Carrier’s miniPCI connector (like Google’s Coral unit of computation).

Hello,

When you are planning your next Meetup ?

Hi @Mennyt , if you are looking for a cheap one then NK STAR USB 2.0 Mini Microphone will do the job well, or if you need better audio and special Audio processing algorithms includes VAD, DOA, Beamforming, NS, AEC and KWS you try the Seeed Studio ReSpeaker, also keep in mind normally USB Webcam has the built-in MIC and you can also utilize that too.

All the best with your project, Happy making.

Designed a Digital Clock Schematic today based on the ArduinoDay2020 DigitalClock breadboard prototype.

mainl.png

This is cool 😋 🤘 , thanks for sharing.

@Ggreeshma-stani Looks great..!!