Hello All. I am working on an environment monitoring project in Uganda in which we are recording data from a wireless sensor network. The sink node captures the data and saves it to an SD card. It is a very low power operation (Transmitter nodes ~ 45μW, Sink node ~ 30mW). To reduce the power consum…

You can use the SD Fat library to use SD cards with the Photon and Electron. Just started testing this myself and it works perfectly.

Do I understand correctly that you are effectively dual-porting the SD card between two processors? If so I would appreciate more details. I am in the process of converting an existing system from Photon to Electron or E series. The application captures a 0.5 MByte file twice daily. The intent of u…

Hi @OziGreybeard . I should have given more details about that. Having 2 masters on 1 slave is actually proving to be unreliable. What we did was to disable the SPI interface of the sinknode. Sometimes, we just don’t read any data and the Electron reports an error at sdInitErrorHalt(). So we have si…

From what I understand of your project and cost constraints, you might consider LoRaWAN for this use case. It operates in the ISM bands and should offer better range (900 MHz versus 2.4 GHz) and power consumption profile (assuming Class A will work for you). Fairly straightforward to setup a privat…

Thanks for the suggestion. Lorawan is not suited for the daily summary reports as there is no viable lore an net in Adelaide. Patients come from a wide area. It’s data rate is too slow for downloading the files in the lab.

LoRaWAN is not suitable for this use case. The total separation of the wireless nodes in this case is typically very small. Usually all nodes are within 10-20m of each other for Automatic Weather Stations and may be as much as 100m, depending on the transmission power and circumstances. All transmis…

Dear mbyamukama, Can you share the TCP listener you wrote? I’m trying to do a similar project but I’m facing an issue regarding how to create the web server. Thank you,

here you go. The executable file is larger with the Microsoft C# compiler than with Mono on Linux. If you are using a linux server, better to compile using mono on the server. the file size is smaller and stream write operations are just a little bit faster, but to no useful consequence. The listene…

@OziGreybeard We did manage to implement the 2-master-1 slave design by using a normally closed quad single-pole single-throw analog switch (DG201BDJE3 - http://www.vishay.com/docs/70037/dg201b.pdf ) In essence, this simply makes it a multi-tasked 1-master 1-slave. The Electron sets all the IN (sw…

[image] mbyamukama: What we have now is the Electron in Deep Sleep @mbyamukama , if you are waking the Electron via D1 then it can't be in deep sleep. You would need to wake via the WKP pin for that. Deep sleep would give you even lower power consumption.

Connecting the Electron 3G over TCP to Your own Server with third party SIM to send SD card data

Getting Started

mbyamukama February 23, 2018, 7:45pm 19

@ScruffR, Thanks. Just read about it in the post by @rickkas7 here. Easy syntax as well.

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Connecting the Electron 3G over TCP to Your own Server with third party SIM to send SD card data

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