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| finding led for trackball... |
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| bossyman15:
i want to connect trackball light to ledwiz but my lamp is 14v so i need 5v or less. know of any led? |
| hanelyp:
You want to run a 14V lamp controled by a device designed to feed 5V to a LED? Or replace the lamp with a LED? For the former, there are relays that operate on 5V to switch higher voltages. |
| bossyman15:
replace lamp with led. |
| hanelyp:
From an electrical standpoint, just put the right resistor in series with the LED for the voltage. 14V supply, 20mA current through the LED, E=IR : R=E/I -> 700ohms should work (shortcuts taken). |
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