Battery Powering Your Wearable Electronics

Becky Stern gives you tips for choosing the perfect battery solution for your wearable electronics projects:
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Comment (26)

  1. I purchased the Adafruit Circuit Playground Express 'kit' which included the Adafruit battery pack 3x AAA

    However I cannot seem to get the Circuit Playg Express to be powered by the battery pack
    It works perfectly with through my computer via USB but when I unplug it to then use it with the batteries alone, nothing happens, not even a green light to show it turning on

    I have tried both switches on the circuit and on the actual battery pack. I have also tried a new set of batteries but no luck

    Am I missing something obvious? Or is my adafruit not working fully? Please help !

  2. gente , help! to cm esse adafruit developer edition atsmd21 e n to sabendo nd cm ele e preciiso descobrir ate amanhã como conecto ele no arduino ou se ele ja tiver as funcionalidades de um arduino mega(pelo q eu entendi ele tem) como faço p ligar um modulo wifi ESP8266 nele? dáp ligar modulo wifi nele?

  3. Wait wait, where can I get that USB cable with the blue moving lights? That's awesome. I found some cables on Amazon but some cables will blow if used with high speed chargers.

  4. Can you make a Video about the LiFePo4 Battery Type. I use them alot for 3.3V boards. They have Voltages of 3.2V-3.6V depending if their empty or full. they have less Capacity then Lipo batterys but because you need no protection or voltage boosters they last longer. Got my ESP8266 current down to 18uA in DeepSleep with one LiFePo4 cell. This make my esp8266 able to sleep 9 years in theorie

  5. Hi Becky, great video on batteries and wearable. My problem is powering my Neopixel WS2812 ring (12 pixel). I have changed the "Strandtest " code for brightness of pixels, that is working good when running off USB port. I try to light them up with 3 AA battery pack (3.6V) and tried higher voltage power supplies. Sometimes several light will turn on and sometime they will not unless I disconnect and reconnect power but the ring will not run the program like when using the USB port. I also used the 3.7v 1200Ah poly battery. Any suggestion as to what I'm doing wrong? Is there another video that might help? I'm using Arduino Uno.

  6. Hello! I'd like to power 3 meters of dotstar LEDs attached to a FLORA platform: 432 LEDs! How much power do I need? And it should be a wearable project, so, is there a portable source of power that you suggest/sell at adafruit to buy together with the dotstars and flora? Thanks, thank you very much in advance!

  7. At 2:22 you brutally unplug that JST connector. I'm pretty cautious with mine because the wires feel so fragile. Clearly you have a lot more experience than I do. What is your recommendation for how to handle JST plugs on LiPo batteries?

  8. You said that you can drive 100 pixels with 2 amps, but in the adafruit website it says the max current if 55mA per LED. so it would take 5.5A to drive 100 neopixels. Am I doing something wrong? why this difference?

  9. I learned the hard way that voltage isn't enough… I had a servo that just worked weird when on a 9v battery and worked fine when the project was connected to the computer. I kept putting it off because "something weird was going on" (before I noticed it was only acting weird on battery power) until I replaced it with 4xAAs which give less voltage but drive more power. It's connected to an Arduino so it's regulated anyway.

    It may be trivial to some, but at my level then it really wasn't.

  10. Hi there. I just love the work you do at Ada. I'm 43 now and was quite adicted to electronics from the age of 14 to 20. Then we moved and i packed everything in boxes and i forgot the hobby. BUT it's waking up again, stronger than ever. So the adiction is rising.
    Chears and greatings from Luxemburg-Europe

  11. If I want to put buttons on the sleeves to power turn signals on the back of the garment, does that require more power because of the long length down the sleeve?

  12. Thanks! I've been looking for this kind of info for a while. However, how do you calculate the power required by the project. I know you mentioned calculating the amperage required by the project but when you have a lot of items connected plus powering the Arduino it can get a bit out of hand and voltages required (if added) exceed 12V by a mile, maybe I'm adding it wrong? Amps, however, seem to add up nicely, but I'm not sure if the calculations are right. Series? Parallel? Thanks for any tips and or guidance on this!


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