Help with flora led heart project

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lilitl
 
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Help with flora led heart project

Post by lilitl »

Hi, I am following this tutorial: https://learn.adafruit.com/heart-rate-badge However, I would like to use a generic 12 neopixel ring instead of the 8 Flora neopixels. Would that work? Would keeping the same battery and setup work with the ring? How should I wire the ring?
I need to finish this today so I would be very grateful if you could please answer asap.
Regards.

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adafruit_support_carter
 
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Re: Help with flora led heart project

Post by adafruit_support_carter »

Would that work?
Should work fine. From the point of view of the FLORA, it's just another strip of NeoPixels. Only difference is there are 12 instead of 8.
Would keeping the same battery and setup work with the ring?
Yep.
How should I wire the ring?
Same as shown in the guide. And then update code to change the NeoPixel count from 8 to 12, which is the first parameter in the call here:

Code: Select all

Adafruit_NeoPixel strip = Adafruit_NeoPixel(12, 12, NEO_GRB + NEO_KHZ800);

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lilitl
 
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Re: Help with flora led heart project

Post by lilitl »

Thank you. I followed your instructions and the neopixels turn on, however they don't seem to be responding to the heartbeat transmitter. They blink whether I wear the transmitter or not and the rythm at which they blik does not change. How can I test whether the transmitter works? What could be happening?
Regards.

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lilitl
 
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Re: Help with flora led heart project

Post by lilitl »

I charged the battery and plugged it, but nothing happens. The battery doesn't seem to be working.

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adafruit_support_carter
 
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Re: Help with flora led heart project

Post by adafruit_support_carter »

Which battery is not charging? The lipo battery used with the Flora? Or the battery in the heart rate monitor itself?

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lilitl
 
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Re: Help with flora led heart project

Post by lilitl »

Thanks for your response. I plugged the transmitter to my Arduino UNO and I could confirm that it does work. However, the lipo battery is not working properly. It charges very quickly, but uncharges in minutes even without using it. I have not managed to power the flora with it not even once. I am using:
Lithium Ion Polymer Battery - 3.7v 150mAh PID: 1317
and
Adafruit Micro Lipo - USB LiIon/LiPoly chargerAdafruit Micro Lipo - USB LiIon/LiPoly charger - v1 PID: 1304

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adafruit_support_carter
 
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Re: Help with flora led heart project

Post by adafruit_support_carter »

That lipo battery / charge combo should work fine. Can you clarify what you mean by charging quickly? How long is it taking? That's a relatively small battery. If fully discharged, would expect charging to take maybe an hour or so.

How do you know the battery is losing charge without even being used?

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lilitl
 
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Re: Help with flora led heart project

Post by lilitl »

By charging quickly I mean about 10 minutes. I asume that it is not charged after a few minutes (maybe 30 minutes, I am not sure) because I plug it to the charger again and again the red led turns on until after 10 minutes. Also, flora led turns on when I plug it to a computer, but not when I plug it to the battery.

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adafruit_support_carter
 
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Re: Help with flora led heart project

Post by adafruit_support_carter »

At this point, is anything attached to the FLORA that might be shorting something out?

Double check the ON/OFF switch on the FLORA and make sure it's in the ON position.

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lilitl
 
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Re: Help with flora led heart project

Post by lilitl »

I started over and it seems to work now. Thank you.

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lilitl
 
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Re: Help with flora led heart project

Post by lilitl »

I forgot to ask: how long do you think that the battery will last with 12 neopixels?
Regards

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