Flora Data Logging

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tyler123
 
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Joined: Thu Jul 01, 2021 9:54 am

Flora Data Logging

Post by tyler123 »

Hello,

I have a wearables project where I need to log sensor data and I was wondering if the FLORA had a good solution.

For my project, I'm using a few sensors, some LEDs, and as many FLORAs as I need to accommodate everything. Some of the sensors will be used to control the LEDs in real time, but some of the sensors I just need to track their data for later. Ideally, I want to be able to generate a time-stamped text file of continuous data for each sensor that I can process in another program later.

If I'm using an Uno or equivalent, I plan to use something like the Adafruit data logger shield: https://learn.adafruit.com/adafruit-data-logger-shield

However, I like the idea of the FLORA and I'd like to be able to make it work with this project. Is there an equivalent data logger that I could use with a FLORA? Or do you have any ideas for how I can achieve this?

Thanks!

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mikeysklar
 
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Joined: Mon Aug 01, 2016 8:10 pm

Re: Flora Data Logging

Post by mikeysklar »

@tyler123,

This sounds like a cool wearable project. I would suggest trying to use one of our newer devices with lots more memory and bluetooth baked in. You could save your text file locally and stream the data in realtime to another catcher device (laptop, pi, or arduino equiv).

If you look at our CPX BLE and compare the physical form to the FLORA you will see a lot of simularities.

https://learn.adafruit.com/adafruit-cir ... -bluefruit

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tyler123
 
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Re: Flora Data Logging

Post by tyler123 »

Thanks for the response!

After some more research, I'm leaning towards the Huzzah32 with the Adalogger FeatherWing. Even though it's not as cool of a "wearable" the WiFi gives me freedom to communicate via UDP, which I'd rather do than being restricted to the Bluefruit environment. I'll still be able to find a way to make it wearable, and it has everything I need for reading sensors, processing data, outputting to LEDs, logging to SD, and transmitting data to a remote PC. Let me know if you have any thoughts. I'd be especially curious to know the estimated WiFi range.

I'll definitely keep the Bluefruit CPX in mind though, it's a cool product and it's nice to have such an upgrade from the FLORA. Do you know how much SRAM it has?

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mikeysklar
 
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Re: Flora Data Logging

Post by mikeysklar »

The Huzzah32 + Adalogger Featherwing sounds like a smart combo. Good WiFi and datalogging. I would also keep the soon to be available ATMegaZero in mind as it has a ton of processing power, flash and sram with built in SD card and WiFi!

https://circuitpython.org/board/atmegazero_esp32s2/

Code: Select all

 Features:

32-bit 240 MHz single-core processor
16 MB SPI Flash
8 MB extra PSRAM
2.4 GHz Wi-Fi - 802.11b/g/n
3D Antenna
Raspberry PI Zero form factor
SD card slot
OLED Display Connector
https://circuitpython.org/board/atmegazero_esp32s2/

The Bluefruit CPX has this much flash/sram:

512KB flash and 64KB SRAM

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