Electronics Forum / Electronics / March 2006

  Im play with a PIC 16F627 and have it wired up with a 4MHz cystal with
two 18pF Caps,
my question is, do the caps affect the acuracy of the oscillation of the
crystal, and I cant find any

Has anyone heard from Turcaud lately?  Apparently he got on some uk sport
newsgroups and told them they played rugby like old women.
He also told them they needed lessons on how to play football.
He then called them stupid because they abused him when he was only telling

I am trying to add an LED to a NiMh charger for 5 AA battery pack
(total voltage about 6.93) to be able to see that is actually turned
on.
I have seen some chargers that have the dropping resistor and LED in

Interesting article for those with an involvement with RFID tags/readers:
http://news.bbc.co.uk/2/hi/technology/4810576.stm

I am looking for a On Screen Display IC for 8-bit micro controller
application that needs to create colour graphics and text on video monitor.
Preference for unit that can gen lock to external signal as well as
run stand-alone.

 how much do you charge per hour for advice and your skills in electronics?
Thanks

I am assisting a a student with a project. He wants to create sort of a
proximinity sensor for the "blind". That would assist vision impaired
indiviual, who cant afford a seeing eye dog. It would be in addtion to
the specialezed walking cane.

Some considerable time ago (maybe two or three computers ago and
possibly back in the time of Netscape 2!)  I came across an online
calculator that plotted the effect caused by the addition of a couple
of resistors between the wiper and the "ends" of a potentiometer.

Was wondering if anyone had a recommendation for someone wanting to learn a
bit about microcontroller circuit design and programming.  I have looked at
the PICs, Stamps, etc. in the Digikey catalogue but there are such a large
number of options and configurations I don't know where ...

I want to Accurately (within 1dB or so) determine the signal strength of a
signal coming into an amplifier circuit.  The input signal level can vary
dramatically, and the circuit includes AGC.   I am thinking that I need to
do the following:

Hi, I need some ideas about a home automation system! In two weeks time
in need to submit a project proposal. I need to know if it is possible
to develop a home automation system that is controlled directly from a
pc. I intend to control lights, get a live feed from a camera and ...

Hey guys,
I have this keypad with 12 functions (ie 12 micro switches). It needs to
be hard wired with a cable length of 2 meters. RF/IR is out of the
question. The logic signals will go to a micro controller and will

 I have an interesting idea below which may help you or other people
and I am wondering if you know anything about it
 In some items such as digital cameras and MP3 recorders the batteries
can be hard and

I wondered if anyone could help me identify this connector I am having
trouble sourcing.
The connector is still being used in new vehicle applications and has
been used since about 2001/2002

I need to acquire a couple of "bucket brigade" IC chips for my son's
Webelo troop. They are in an endeavor to attain some of their "activity
badges" and my son has chosen electronics (which he has shown a great
deal of talent in). He has done quite a few projects on his own but now