I have two Fuji Film digital
cameras (FinePix 2650 and FinePix
A210). Each came equipped with a 16
MB xD-Picture card (image memory
card) which is a semiconductor
memory (NAND-type Flash memory)
to record digital image data.
processor. The problem is the sensitivity. The output goes from 0 up to 191,
and then back to 0. I have tried several op-amp configurations with little
success. I am a newbee, and could
sure use some help.
[#2133 - February 2013]
Low Audio on Dish Receiver
I'm looking for a schematic for a
Dish Network satellite receiver model
DISH311. The audio is too low and I'm
wondering if there was any adjustment
that could be made to increase it.
I’m trying to replace the four-port
IC mic with a two-port mic since the
mic IC is very expensive. When I try to
do it, I don’t know where the continuity of the mic port is — especially in
the Samsung mobile.
#4134 Sankar Rameswaran
Tuticorin / TAMIL NADU
Check the menu settings for the
Volume Control options.
I have a micro-SD adapter
(orange) with a 1 GB card which fits
EXACTLY into the xD-Picture card slot.
Even though I formatted the card
INSIDE the cameras several times, I'm
still getting "Card Error - Card Not
Initialized" messages on the camera’s
Why can't I use this 1 GB micro-SD adapter with these digital cameras?
Under what circumstances can I use
this type of adapter?
[#1132 - January 2013]
iPhone / X10 Control
Is there a way to operate my home
X10 devices using my iPhone through
my Wi-Fi network (preferred) or
I have tried connecting a color
security camera to a Maxent (MX- 42
HPM20) plasma TV without great
results. Either the color hues are bad or
it goes from color to monochrome and
back again, all under great lighting
conditions. The camera's composite out
goes directly into the TV's AV1 or AV2
input. The TV's other inputs work fine
and the camera looks great on another
monitor. What's going on here?
#4132 Radio Mike
Try the Insteon hub. It gives you
smartphone and web access to your
Insteon and X- 10 modules at home or
away, plus text alerts from sensors, if
you install them. It’s a free app and
there are no fees. Or, use the
Smartlinc unit — an older version of
the above — except no text alerts.
Santa Clarita, CA
[#3132 - March 2013]
I lost my hearing at a very young
age and have always struggled with
listening to the audio out phones,
computers, MP3 players, etc. When I
have my hearing aids in and try to
listen, it’s actually worse!
I would like to build an audio
amplifier with a programmable
equalizer, to be connected to the
3. 5 mm audio output jack. I will
connect +5V separately. The device
will be connected to a PC temporarily
through the USB jack for programming, and then be removed.
Here are my questions:
Is a one stage amplifier enough?
Is it better to amplify first then
equalize, or equalize then amplify?
Who makes the best audio chips?
What software is needed to
program the EQ?
Any suggested readings, websites,
software, forums, etc.
78 April 2013
I’m trying to use an SDX01G2
pressure sensor to log CPAP breathing
patterns. The circuit uses an LM324N
op-amp, an ADC0831 CCN eight-bit
A/D converter, and a BASIC Stamp 2
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