Hobby Electronics Basics

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How to send a signal from PC to a circuit board?

Hi I am working on a project where I have to send signals from a PC (RS232 or USB?) to a 4-to-16 decoder. Basically, I...
15 comments posted 19yrs
posted by lichxx
15 comments posted 19yrs posted by lichxx

Can volume control be part of a pre-amp?

Hi all: In reference to this part again: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2469 MAX4469 microphone preampli...
6 comments posted 19yrs
posted by mr.whatever
6 comments posted 19yrs posted by mr.whatever

Kit resources for intro electronics course

I am interested in people's experience with entry level electronic kits that require some soldering. I am teaching a sh...
2 comments posted 19yrs
posted by zeitguy
2 comments posted 19yrs posted by zeitguy

HC08 development under Linux

I've always been singularly impressed by the people who can make lights blink and robots roll and whatnot. I've been tr...
1 comments posted 19yrs
posted by wholcomb
1 comments posted 19yrs posted by wholcomb

Ceiling light not working

This is basic, but the post is longish. I replaced the light switch in my house because the ceiling light would not com...
8 comments posted 19yrs
posted by jhd
8 comments posted 19yrs posted by jhd

Transmitter

Hi gurus. This is what I want but have no clue, I need to get me a really small transmitter(component) that will send a...
10 comments posted 19yrs
posted by bqtovzla
10 comments posted 19yrs posted by bqtovzla

lcd help?

Any to link to a web-site or a file maybe where it is described how do LCD's work?
3 comments posted 19yrs
posted by anteprojic
3 comments posted 19yrs posted by anteprojic

Alphatex TEK 3660 insulation tester

I am looking for the instructional leaflet for this. I have had no success with Googling or at the manufacturers website...
3 comments posted 19yrs
posted by g.knott
3 comments posted 19yrs posted by g.knott

Scooter Saga: Revisited; Batteries and Charger

I addressed this issue yesterday, but I lacked the appropriate nomenclature for others to give me their input. My quest...
4 comments posted 19yrs
posted by mea305
4 comments posted 19yrs posted by mea305

Non contact voltage operated switch

Can anybody point me towards a circuit diagram/plan. I am looking for a design where I can operate a relay by sensing m...
3 comments posted 19yrs
posted by all.junkmail
3 comments posted 19yrs posted by all.junkmail

microchip design printer

I was just wondering if it is possible to make a printer similar to an inkjet that prints microchip designs. It could p...
9 comments posted 19yrs
posted by bob
9 comments posted 19yrs posted by bob

Surge protectors - brand questions

When buying a surge protector, should brand matter or are all brands basically the same quality? I'm aware that I shoul...
1 comments posted 19yrs
posted by littleboyblu87
1 comments posted 19yrs posted by littleboyblu87

crystal oscillating

Hello, I have a 2.0Mhz (2 pin ) crystal. I would liek to havr it oscillate so i can incorporate it inta a circuit. I tr...
7 comments posted 19yrs
posted by lerameur
7 comments posted 19yrs posted by lerameur

Charging a battery with 9V1A instead of 9V2A

A portable DVD player originaly used a 9 volt 2 amp charger for its battery. Can a 9 volt 1 Amp charger be used instead....
2 comments posted 19yrs
posted by jeanbourbon
2 comments posted 19yrs posted by jeanbourbon

Connecting multiple mics to a preamp?

Hello all: What considerations do I need to take when connecting multiple microphones to a pre-amp? Can I even do that?...
8 comments posted 19yrs
posted by mr.whatever
8 comments posted 19yrs posted by mr.whatever