Two quick questions
Archiver
Posts: 46,084
Hi all,
I just started to incorporate a voltage monitoring system into my
project using the adc8031, BS2, and a 4.8 v battery.
I was running it and the voltage was coming up fine, but I noticed that
it was extremely hot, I touched it and was almost blister hot.
Is this standard?
My other question was, I'm running out of I/O pins and I have an lcd
screen and I read some where that you can tri-state one of the data bus
lines.
What does this mean and can I do it? I just want to add a sharp Gpd02-4
to my project, and just need one more pin.
-Mike
[noparse][[/noparse]Non-text portions of this message have been removed]
I just started to incorporate a voltage monitoring system into my
project using the adc8031, BS2, and a 4.8 v battery.
I was running it and the voltage was coming up fine, but I noticed that
it was extremely hot, I touched it and was almost blister hot.
Is this standard?
My other question was, I'm running out of I/O pins and I have an lcd
screen and I read some where that you can tri-state one of the data bus
lines.
What does this mean and can I do it? I just want to add a sharp Gpd02-4
to my project, and just need one more pin.
-Mike
[noparse][[/noparse]Non-text portions of this message have been removed]
Comments
laxboy687@e... writes:
> Hi all,
>
> I just started to incorporate a voltage monitoring system into my
> project using the adc8031, BS2, and a 4.8 v battery.
> I was running it and the voltage was coming up fine, but I noticed that
> it was extremely hot, I touched it and was almost blister hot.
> Is this standard?
> My other question was, I'm running out of I/O pins and I have an lcd
> screen and I read some where that you can tri-state one of the data bus
> lines.
> What does this mean and can I do it? I just want to add a sharp Gpd02-4
> to my project, and just need one more pin.
>
> -Mike
>
"blister hot" is not normal! Some part of your circuit is pulling too much
current.
Also, what was extreemly hot, the stamp, the adc???
What input voltage are you running to power the stamp?
[noparse][[/noparse]Non-text portions of this message have been removed]
being run by a 9v battery, and the adc was connected to the battery that
my robot is going to use.
Original Message
From: smartdim@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=DjeviEx8cszLD7zZSMOsuA5lbB1w1XgRceXYcodtq8vuwwA2uVpwldfks6-nEB5WS01sbV0A7odTURw]smartdim@a...[/url
Sent: Tuesday, April 29, 2003 8:35 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] Two quick questions
In a message dated 4/29/2003 5:07:54 PM Pacific Daylight Time,
laxboy687@e... writes:
> Hi all,
>
> I just started to incorporate a voltage monitoring system into my
> project using the adc8031, BS2, and a 4.8 v battery.
> I was running it and the voltage was coming up fine, but I noticed
that
> it was extremely hot, I touched it and was almost blister hot.
> Is this standard?
> My other question was, I'm running out of I/O pins and I have an lcd
> screen and I read some where that you can tri-state one of the data
bus
> lines.
> What does this mean and can I do it? I just want to add a sharp
Gpd02-4
> to my project, and just need one more pin.
>
> -Mike
>
"blister hot" is not normal! Some part of your circuit is pulling too
much
current.
Also, what was extreemly hot, the stamp, the adc???
What input voltage are you running to power the stamp?
[noparse][[/noparse]Non-text portions of this message have been removed]
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are you measuring direct or thru a voltage divider ?
Dave
--- In basicstamps@yahoogroups.com, "Mike Dillon" <laxboy687@e...>
wrote:
> The adc was hot, I have a board of education so the board and stamp
were
> being run by a 9v battery, and the adc was connected to the battery
that
> my robot is going to use.
>
>
Original Message
> From: smartdim@a... [noparse][[/noparse]mailto:smartdim@a...]
> Sent: Tuesday, April 29, 2003 8:35 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] Two quick questions
>
> In a message dated 4/29/2003 5:07:54 PM Pacific Daylight Time,
> laxboy687@e... writes:
>
> > Hi all,
> >
> > I just started to incorporate a voltage monitoring system into my
> > project using the adc8031, BS2, and a 4.8 v battery.
> > I was running it and the voltage was coming up fine, but I noticed
> that
> > it was extremely hot, I touched it and was almost blister hot.
> > Is this standard?
> > My other question was, I'm running out of I/O pins and I have an
lcd
> > screen and I read some where that you can tri-state one of the
data
> bus
> > lines.
> > What does this mean and can I do it? I just want to add a sharp
> Gpd02-4
> > to my project, and just need one more pin.
> >
> > -Mike
> >
>
> "blister hot" is not normal! Some part of your circuit is pulling
too
> much
> current.
>
> Also, what was extreemly hot, the stamp, the adc???
>
> What input voltage are you running to power the stamp?
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the
Subject
> and Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
Original Message
From: Dave Mucha [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=wVdsn-XoiWIGOR7ejCpI6aT98JUcJNkmZ-G9bEzhVPmgFLco3PkfxhckLy0uoMdMnJngPfHg9cZi]davemucha@j...[/url
Sent: Tuesday, April 29, 2003 9:15 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: Two quick questions
did you put in a 10K resistor to limit the current ?
are you measuring direct or thru a voltage divider ?
Dave
--- In basicstamps@yahoogroups.com, "Mike Dillon" <laxboy687@e...>
wrote:
> The adc was hot, I have a board of education so the board and stamp
were
> being run by a 9v battery, and the adc was connected to the battery
that
> my robot is going to use.
>
>
Original Message
> From: smartdim@a... [noparse][[/noparse]mailto:smartdim@a...]
> Sent: Tuesday, April 29, 2003 8:35 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] Two quick questions
>
> In a message dated 4/29/2003 5:07:54 PM Pacific Daylight Time,
> laxboy687@e... writes:
>
> > Hi all,
> >
> > I just started to incorporate a voltage monitoring system into my
> > project using the adc8031, BS2, and a 4.8 v battery.
> > I was running it and the voltage was coming up fine, but I noticed
> that
> > it was extremely hot, I touched it and was almost blister hot.
> > Is this standard?
> > My other question was, I'm running out of I/O pins and I have an
lcd
> > screen and I read some where that you can tri-state one of the
data
> bus
> > lines.
> > What does this mean and can I do it? I just want to add a sharp
> Gpd02-4
> > to my project, and just need one more pin.
> >
> > -Mike
> >
>
> "blister hot" is not normal! Some part of your circuit is pulling
too
> much
> current.
>
> Also, what was extreemly hot, the stamp, the adc???
>
> What input voltage are you running to power the stamp?
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the
Subject
> and Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
To UNSUBSCRIBE, just send mail to:
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from the same email address that you subscribed. Text in the Subject
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Original Message
From: Dave Mucha [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=SAzxeWsTerIV_Nv6T4_OSSpXpJdUDcZ07veOOdZlBcwnOgc797EUgym-KheRBJqQpcVxKJHX1qoJbQ]davemucha@j...[/url
Sent: Tuesday, April 29, 2003 9:15 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: Two quick questions
did you put in a 10K resistor to limit the current ?
are you measuring direct or thru a voltage divider ?
Dave
--- In basicstamps@yahoogroups.com, "Mike Dillon" <laxboy687@e...>
wrote:
> The adc was hot, I have a board of education so the board and stamp
were
> being run by a 9v battery, and the adc was connected to the battery
that
> my robot is going to use.
>
>
Original Message
> From: smartdim@a... [noparse][[/noparse]mailto:smartdim@a...]
> Sent: Tuesday, April 29, 2003 8:35 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] Two quick questions
>
> In a message dated 4/29/2003 5:07:54 PM Pacific Daylight Time,
> laxboy687@e... writes:
>
> > Hi all,
> >
> > I just started to incorporate a voltage monitoring system into my
> > project using the adc8031, BS2, and a 4.8 v battery.
> > I was running it and the voltage was coming up fine, but I noticed
> that
> > it was extremely hot, I touched it and was almost blister hot.
> > Is this standard?
> > My other question was, I'm running out of I/O pins and I have an
lcd
> > screen and I read some where that you can tri-state one of the
data
> bus
> > lines.
> > What does this mean and can I do it? I just want to add a sharp
> Gpd02-4
> > to my project, and just need one more pin.
> >
> > -Mike
> >
>
> "blister hot" is not normal! Some part of your circuit is pulling
too
> much
> current.
>
> Also, what was extreemly hot, the stamp, the adc???
>
> What input voltage are you running to power the stamp?
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the
Subject
> and Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject
and Body of the message will be ignored.
Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> In a message dated 4/29/2003 5:07:54 PM Pacific Daylight Time,
> laxboy687@e... writes:
>
> > Hi all,
> >
> > I just started to incorporate a voltage monitoring system into my
> > project using the adc8031, BS2, and a 4.8 v battery.
> > I was running it and the voltage was coming up fine, but I
noticed that
> > it was extremely hot, I touched it and was almost blister hot.
> > Is this standard?
> > My other question was, I'm running out of I/O pins and I have an
lcd
> > screen and I read some where that you can tri-state one of the
data bus
> > lines.
> > What does this mean and can I do it? I just want to add a sharp
Gpd02-4
> > to my project, and just need one more pin.
> >
> > -Mike
> >
Are you powering the ADC from +5V or from the 9V? I don't have the
specs in front of me, but I power the ADC's from the 5V available
from the Stamp.
Regards,
Mike
> "blister hot" is not normal! Some part of your circuit is pulling
too much
> current.
>
> Also, what was extreemly hot, the stamp, the adc???
>
> What input voltage are you running to power the stamp?
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]