Can this networks wisdom help me out?

Yesterday I ended up with a small splinter of metal (from a screw) in the tip of my index finger. No worries, I figured it'll come out by itself.

This morning, turning on the tea kettle, I felt a faint buzzing sensation. Not painful, but not pleasant either.

After some experimenting it seems to be the metal splinter reaction to (very) nearby electric fields (transformers etc).

Is this some type of parasitic capacitance?

#electricity #body #question

Content warning: Electronics question – LED resistors, boosts welcome Click to open/close

I pulled apart an LED bulb. I can't remember the lumens but think it was 200lm. I want to use the individual LEDs with an Arduino but don't know what resistor to use with each as I'm not sure how big a punch each one packs. The resistor for all 36 tiny LEDs is in the second photo – looks like [brown black black black red] to my eyes.

Any idea how I can calculate the resistor needed for one bulb please?

#electronics #question #diyElectronics