| Electronics > Projects, Designs, and Technical Stuff |
| 5v WS2812 5m led strip from battery?? :( |
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| Steelman14a:
Hi guys! I need some Help from electric masters. I need to power 5 meters of 5v WS2812 smart led strip from batteries. To put it in coat so it glows from underneath. What i got now is i use 8 AA bats -> through DC-DC so in the end i got 5v -> going to led controller and then to -> led strip. And it starts, but after 5min batteries getting very hot, and all shuts down:( Please help me! What i'm doing wrong? Maybe i need some other batteries? Or something im missing. Any help is appreciated. |
| coromonadalix:
Have you checked how much the strip consumes, simple batteries like you used is not enough, you have to use bigger batteries bank,. Ie: more output current / wattage What autonomy do you need ? |
| Steelman14a:
The strip is 5m 30leds/per meter so, its 150 leds. The info i've found on them is max current 60mA / per led and max power 0.3W / per led. So its 45watts i think. |
| Steelman14a:
And i need it to work for 2-4 hours. |
| MagicSmoker:
--- Quote from: Steelman14a on August 12, 2019, 11:06:06 am ---... So its 45watts i think. ... And i need it to work for 2-4 hours. --- End quote --- A good quality alkaline AA cell will deliver around 2.5Ah when drained at low current, but perhaps only 1Ah at moderate currents of 0.5A or so. An 8 cell battery would then be able to deliver around 8Wh at a 0.5A drain, and you need 90-180Wh... So, it's no surprise that the battery is getting hot and dying quickly. |
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