Hobby Electronics Basics

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Positioning equipment

Hi, my teammates and I need to develop some device on one of our collage courses. One of it's features is to be able to...
25 comments posted 19yrs
posted by ask
25 comments posted 19yrs posted by ask

Very basic crystal question

When I go looking for information on crystal filters, everything I can find seems to be aimed at using a bunch of cryst...
2 comments posted 19yrs
posted by LawrenceSMITH
2 comments posted 19yrs posted by LawrenceSMITH

freeware for schematic to pcb?

I would like to be able to take a schematic- which can be already be in jpg format from the web or drawn with a program...
4 comments posted 19yrs
posted by gregw
4 comments posted 19yrs posted by gregw

Vehicle control design

I want to design Motor speed controllers ( VFD) AC Drive 1-phase or 3- phase for battery operated vehicles for short-dis...
2 comments posted 19yrs
posted by balla.venugopal
2 comments posted 19yrs posted by balla.venugopal

Earphone's volume level question

Hi experts, At first, i though it may be a earphone / device failure, but after i experience that issue with several de...
9 comments posted 19yrs
posted by kimiraikkonen85
9 comments posted 19yrs posted by kimiraikkonen85

Garage sensor

Good day I have the sensors from a garage door opener ( the two sensors that raise or stop the garage door if someone w...
3 comments posted 19yrs
posted by rickj
3 comments posted 19yrs posted by rickj

MRD500

Hi, I am looking for MRD500 photodiode. Does anyone can advice me where can I get this part. Thanks in advance. Alexande...
1 comments posted 19yrs
posted by alexl
1 comments posted 19yrs posted by alexl

What is it?

I had an older model Dremel (260) rotary tool throw a brush, which shorted out and fried the switch assembly. Repair pa...
3 comments posted 19yrs
posted by spambaitmeister
3 comments posted 19yrs posted by spambaitmeister

Mosfet switch issues

I setup a mosfet to switch power to a pin on a PIC. The circuit works only for low R. Vcc ---> R ----> Drain + link to...
7 comments posted 19yrs
posted by Jon_Slaughter
7 comments posted 19yrs posted by Jon_Slaughter

OT: Sorry for my offensive posts

Hello: I am aware that some of my posts in the "EDTN" thread might have offended readers. In that case, I apologize pro...
15 comments posted 19yrs
posted by glucegen1
15 comments posted 19yrs posted by glucegen1

So what can a microcontroller *not* do?

Or more appropriately, when is a uC not the answer? I mean yeah, there's tons of super simple stuff in which a uC would...
9 comments posted 19yrs
posted by blahbleh666
9 comments posted 19yrs posted by blahbleh666

Sizing a capacitor?

Hello. 1st post on any group. Hope this works. I don't know squat about electronics. However, maybe someone here can he...
41 comments posted 19yrs
posted by lorne.serpa
41 comments posted 19yrs posted by lorne.serpa

question about microcontroler oscillator

saga continues, my repair project device uses a phillips MAB 8051 AH microcontroller. while trying to isolate trouble w...
76 comments posted 19yrs
posted by some
76 comments posted 19yrs posted by some

Stepper motors

I'm setting up a small CNC mill to educate myself before taking the plunge on a larger machine and I have a few questio...
3 comments posted 19yrs
posted by Periproct
3 comments posted 19yrs posted by Periproct