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How to setup unknown LEDs

How to setup unknown LEDs In this video we look at ways to choose the resistor you need to current limit your LEDs. e also look at what happens if you don't use current limiting. We discuss using Ohm's law if we know the supply voltage, forward voltage, and forward current. But we focus on how to choose a resister if you have unknown LEDs that do not provide this information. 5 boards for about $22 in about 7 days https://www.pcbway.com Yes!! I now have merch: https://teespring.com/stores/learnele... Electronics themed T-Shirts! HEY YOU ABOUT TO POST SOMETHING STUPID: Yes, I know my hands are large/fat. It's because of a heart condition I suffer from called Congestive Heart Failure. Here's a link to some information about CHF: https://cle.clinic/2TdS2Ux One of the symptoms is that is causes fluid retention, mostly in the hands, feet/ankles, and face. It will kill me one day. I'm doing ok right now, but someday... -------------------------------------------------------------------------------------------------------------------- If you are shopping for electronic components, test gear or consumables please consider visiting my Amazon shop @ amazon.com/shop/learnelectronics Please check out www.patreon.com/learnelectronics and pledge a dollar if you can. It will go a long way to keeping the channel alive. It costs a bit of money to buy all the items and produce these videos. You help is appreciated. --------------------------------------------------------------------------------------------------------------------- Or....if you'd like to send a one-time donation you can use this link: paypal.me/learnelectronics ---------------------------------------------------------------------------------------------------------------------- Here is all the gear I currently use: Oscilloscope 1: Rigol 1054Z https://amzn.to/2PRybtN Oscilloscope 2: Siglent SDS1202X-E https://amzn.to/31Kk1yH Power Supply 1: TekPower TP3005N https://amzn.to/2TeQnxI Power Supply 2: RUIDENG DP50V5A https://amzn.to/2sNicSe Signal Generator: JS2800 https://ban.ggood.vip/d9vk DMM1: Owon18B https://amzn.to/2SbIGLs DMM2: Aneng 8008 https://amzn.to/2sNQncI DMM3: Aneng 8009 https://amzn.to/2S5qeEp DMM4: Uni-T UT801 https://amzn.to/2S89SuL Soldering Station1: Zeny (Yihua)862D+ https://amzn.to/2S49z4e Soldering Station2: KSGR T12 https://amzn.to/2Wk7Dn9 Light Meter Smart Sensor AS803 https://amzn.to/2B2gyRg