Hobby Electronics Basics

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Unknown MOSFET logo

Hi, all, I'm trying to identify this part, which is probably an N-FET: Octopart, LCSC, and the usual datasheet sites co...
6 comments posted 7yrs
posted by pcdhSpamMeSenseless
6 comments posted 7yrs posted by pcdhSpamMeSenseless

Feedback on soldering effort and circuit analysis

I could use some feedback. I think I soldered on the right side this time. https://i.imgur.com/vTV4Qwv.jpg https://i.im...
7 comments posted 7yrs
posted by scientist77017
7 comments posted 7yrs posted by scientist77017

Fresnel lens?

I am trying to maximize the amount of light that a red laser produces when it hits a cadmium photo cell. I went from a...
7 comments posted 7yrs
posted by scientist77017
7 comments posted 7yrs posted by scientist77017

5 Pin Round Screw In Connector to USB

The 5 pin end is male male. The externally threaded dia is 7 mm. The pins are radially symmetrical oriented with a coup...
13 comments posted 7yrs
posted by bretcahill
13 comments posted 7yrs posted by bretcahill

Hookup wire

Is 26 gauge hookup wire ok for my circuit board ? I am using PCB boards. I think the holes are the standard width apart.
19 comments posted 7yrs
posted by scientist77017
19 comments posted 7yrs posted by scientist77017

Dark powdery particles from soldering iron

When I changed my tip on my Chinese copy of a Hakko wannabe, I saw a small amount of black powdery residue that came ou...
11 comments posted 7yrs
posted by scientist77017
11 comments posted 7yrs posted by scientist77017

Basic electronics

I started reading Understanding Basic Electronics by Larry Wolfgang. He explains well and keeps it interesting. Good ch...
5 comments posted 7yrs
posted by andrewkennedy775
5 comments posted 7yrs posted by andrewkennedy775

Arduino code sources?

I bought my first Arduino UNO R3 kit two weeks ago (the Elegoo Super Starter kit) and am stepping through its tutorials...
20 comments posted 7yrs
posted by me
20 comments posted 7yrs posted by me

Audio capacitor

I salvaged some boards from a Yamaho radio. HTR - 5460 260 watts One boards has some 63V 12,000 uF caps. No voltage sho...
6 comments posted 7yrs
posted by scientist77017
6 comments posted 7yrs posted by scientist77017

Speaker id needed

This is from a cordless phone. I think it is a speaker. Phone uses 2.4 volt battery. I was wondering if it would work i...
15 comments posted 7yrs
posted by scientist77017
15 comments posted 7yrs posted by scientist77017

Test hook clip

I would like to be able to test circuits in tight spaces and it looks like this addition would work. It's too bad they...
5 comments posted 7yrs
posted by scientist77017
5 comments posted 7yrs posted by scientist77017

Pinging AK Andy

https://www.allelectronics.com/item/osu-1130/through-beam-photo-electric-sensor-pair/1.html check it out $11.35 pair Pr...
10 comments posted 7yrs
posted by default
10 comments posted 7yrs posted by default

Solid tinned wire meets circuit board

Try not to laugh too hard. I think I may need a video on how to connect components on a board. https://www.dropbox.com/...
9 comments posted 7yrs
posted by scientist77017
9 comments posted 7yrs posted by scientist77017

Piezo buzzer - no polarity marks

I got this, but saw no polarity markings like my other larger piezo buzzer. Andy Piezo Transducer Electrical Specificat...
7 comments posted 7yrs
posted by scientist77017
7 comments posted 7yrs posted by scientist77017