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How many LEDs can I power??
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- Опубликовано: 3 авг 2024
- Math in making is everywhere!! In this example, we look at a classic electronics question: how many lights (LEDs) can I power with a battery? What about with a microcontroller?? lets dig in and find out, friends!
To learn more about electronics, check out my book: link.springer.com/book/10.100... 😄
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Phenomenal. Thank you so much for a video that breaks this down in an engaging, easy-to-follow way!!! I'm going to be re-watching this while I wire a bunch of mini projects.
Awesome vid! Exactly what I was looking for!!
Tnx a lot for your useful lesson
Exactly what I needed....Thank you!!
Yayyy glad to hear its helpful!!
Thank you for this. A straight forward answer to a question. Thank you so much
Happy to help!
Great explanation. You have access as if you were explaining to children. Which I like.
Thank you!
I love it 😍
Brilliant💡 ❤️
Thank you! 😄
i am just a battery without a led
I assume that the LED's on a single pin are in // , isn't it? Great explanation 👌 Thanks.
Yup! Gotta be in parallel, not enough voltage with just 1 battery for 2 in series
I'm disabled and I want to get led lights for my tent. What ones could I buy that run the least amount of power so I could use USB power bank. Or do they sell ones that you're aware of that could be recharged via AC, car, solar.
Red LEDs will use the least amount of power. From there, dimmer lights and fewer lights = least power consumption. Id recommend figuring out how much light you want/need, and then you can get a set that runs off a lithium battery (or rechargable AAs) that can be recharged with a solar panel during the day.
Here's an example of fairly bright LEDs: www.adafruit.com/product/4846
And some lower power ones: www.adafruit.com/product/897
Both of those have options to include batteries. The latter set uses coin cells.. unsure if there are rechargable coin cells but those are quite cheap and safe to dispose of. You could also replace the coin cells with a 3V lithium battery with higher capacity that can be recharged (altho I'd recommend reading adafruits comment about changing the power source in the product description). Hope that helps!
1 Amp hour off a 2032. think about it ;) and also, putting in a resistor will dim the LED but it won't save the battery. you'll be just wasting that power through heat generated in the resistor. you'd be much more power efficient if you connect them LEDS in series of 2, each having 1.5V, then you don't lose any energy unnecessarily.
Yea the capacity of a cr2032 is impressive! Resistors can and do preserve battery capacity in series with an LED bc it reduces current consumption so the battery will last longer.