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I'm gonna be adding an IR LED to my Arduino Uno and I'm trying to wrap my head around the math used to figure out the exact resistor values needed to use a PN2222A transistor to drive the LED. I know my LED has a voltage drop of 1.35V and I want to run it at 100mA and that I'll be supplying it...

I have two DS18B20 connected through 1-wire, I can see data coming from them on SSH ls -l /sys/bus/w1/devices/ and they're registered inside my code, addresses are visible. However, data isn't appearing in the dashboard, any clue why is that?

I'm trying to do a power analysis on my target, which runs on 3.3 volts. Without the resistor, the average current while running is roughly 140mA. I used a 10Ohm resistor as a shunt resistor with a 5V power source. The voltage difference between VCC PIN and GND was measured using a shunt...

Hi guys, I have a Kenwood KT7500 tuner that has a noise(when it feels like it) coming from the opamp(traced the signal path before it and it goes away). My question is are there other op-amps that will take the place of the RC4558P that is there without modifying anything? When changing these...

Everybody knows that gardens need water. I used a garden hose and sprinkler last summer and it provided adequate results. It did prove to be a challenge to remember to turn on the sprinklers in the morning or turn them off after about 30 min. This happened several times last summer and because...