The voltage developed across that series resistor can be measured as the transistor ... It’s an ingenious way to send sensor signals down a two-wire LED strip, even if it does take a second ...

Sometimes the most useful hacks are also the simplest ones. A case in point is the LED and resistor assembly that [Skippy] recently posted on his blog. The idea is to solder up some pre-made ...

To calculate the resistance of the series resistor required, we need to look at the current and voltage values recommended by the LED manufacturer. Suppose a manufacturer recommends a maximum ...