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 ...

As high-power LED lighting enters new markets, the need to correctly and safely specify the right type of resistor is becoming more important. Not all resistors are the same. Growth in new markets ...

A hard drive crash, and some other happenings that aren’t entirely clear to us, led [Devbisme] to put in ... he can solder one 0603 surface mount resistor on top of another one to get there.

A single LED can both sense and emit light with the same LED and bias resistor. The circuit in Figure 1 requires only 45 logic elements, and the programmability of the CPLD makes it easy to quickly ...

Either configuration will provide uniform LCD lighting. The LED strings can be arranged in parallel using a series resistor in each string to provide string-to-string current balancing as well as ...

if at all (LEDs won't light up or will be too dim, etc). Too much and things probably won't work right and also might short out and create a fire risk. Resistor values are measured in Ohms ...