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Discussion Groups
Discussion Groups | BasicX | Using the Basicx24 to read weight
Discussion forum for the BasicX family of microcontroller chips.
Using the Basicx24 to read weight - David_Basile - Feb 5 18:14:34 2008
I'm just getting back into my BasicX and searched the archives but
only saw a few old messages about this subject so I thought I would
revisit it.
I have a 15 gallon canister I need to weigh and constantly monitor
the weight of the contents inside so when I get down to 3 pounds I
know I have to reorder more chemical.
What is the best way to do this? I've seen mention of "load cells"
and "strain gauges" but not a whole lot of talk about them or how you
would use one with the BasicX. There is a device sold by Parallax
called FlexForce which says:
"The active sensing area is a .375" diameter circle at the end of the
sensor. The conductive leads are easy to connect to a breadboard or
through-hole area. The Flexiforce has an ideal output for A/D
conversion - 0V is no force and 4.2V is 100 lbs. The RCTIME command
may be used with a LOOKUP table or calibration formula to execute
some math to make the output useful. The kit includes a 220 ohm
resistor, 0.1 uF and 0.01 uF capacitors and the Flexiforce sensor."
Could this be used to get the weight? Or should I be looking for a
load cell or stress gauge? The problem with the canister is it is
not flat on the bottom and sort of resembles on of those large
plastic chemical sprayers you might see at WalMart so I don't know
how much contact area I would have with any device.
Any help, suggestions or directions would be greatly appreciated.
Thanks.
David
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
only saw a few old messages about this subject so I thought I would
revisit it.
I have a 15 gallon canister I need to weigh and constantly monitor
the weight of the contents inside so when I get down to 3 pounds I
know I have to reorder more chemical.
What is the best way to do this? I've seen mention of "load cells"
and "strain gauges" but not a whole lot of talk about them or how you
would use one with the BasicX. There is a device sold by Parallax
called FlexForce which says:
"The active sensing area is a .375" diameter circle at the end of the
sensor. The conductive leads are easy to connect to a breadboard or
through-hole area. The Flexiforce has an ideal output for A/D
conversion - 0V is no force and 4.2V is 100 lbs. The RCTIME command
may be used with a LOOKUP table or calibration formula to execute
some math to make the output useful. The kit includes a 220 ohm
resistor, 0.1 uF and 0.01 uF capacitors and the Flexiforce sensor."
Could this be used to get the weight? Or should I be looking for a
load cell or stress gauge? The problem with the canister is it is
not flat on the bottom and sort of resembles on of those large
plastic chemical sprayers you might see at WalMart so I don't know
how much contact area I would have with any device.
Any help, suggestions or directions would be greatly appreciated.
Thanks.
David
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Re: Using the Basicx24 to read weight - Tom Becker - Feb 5 20:00:23 2008
> ... when I get down to 3 pounds...
Might you be able to use a simple sprung switch, a microswitch ,
magnetic reed or IR switch alongside an appropriate coil or leaf spring
that's displaced a handy distance at three pounds?
Tom
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Might you be able to use a simple sprung switch, a microswitch ,
magnetic reed or IR switch alongside an appropriate coil or leaf spring
that's displaced a handy distance at three pounds?
Tom
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RE: Using the Basicx24 to read weight - "David E. Basile" - Feb 5 20:01:35 2008
John,
Thanks for the info. Where did you get your strain guage?
David
_____
From: b...@yahoogroups.com [mailto:b...@yahoogroups.com] On Behalf Of
John Biggs
Sent: Tuesday, February 05, 2008 7:09 PM
To: b...@yahoogroups.com
Subject: Re: [BasicX] Using the Basicx24 to read weight
If it were me I would use a strain gage glued to a piece of material. I have
done this. In my case I used a
tie wrap. I glued the strain gage to the smooth surface. Then the small
wires go to the wheatstone bridge.
I then run the output to an input pin on the BX24. http://www.omega.
com/literature/transactions/volume3/strain2.html
Hope this is helpful
John
----- Original Message ----
From: David_Basile com>
To: basicx@yahoogroups. com
Sent: Tuesday, February 5, 2008 2:30:41 PM
Subject: [BasicX] Using the Basicx24 to read weight
I'm just getting back into my BasicX and searched the archives but
only saw a few old messages about this subject so I thought I would
revisit it.
I have a 15 gallon canister I need to weigh and constantly monitor
the weight of the contents inside so when I get down to 3 pounds I
know I have to reorder more chemical.
What is the best way to do this? I've seen mention of "load cells"
and "strain gauges" but not a whole lot of talk about them or how you
would use one with the BasicX. There is a device sold by Parallax
called FlexForce which says:
"The active sensing area is a .375" diameter circle at the end of the
sensor. The conductive leads are easy to connect to a breadboard or
through-hole area. The Flexiforce has an ideal output for A/D
conversion - 0V is no force and 4.2V is 100 lbs. The RCTIME command
may be used with a LOOKUP table or calibration formula to execute
some math to make the output useful. The kit includes a 220 ohm
resistor, 0.1 uF and 0.01 uF capacitors and the Flexiforce sensor."
Could this be used to get the weight? Or should I be looking for a
load cell or stress gauge? The problem with the canister is it is
not flat on the bottom and sort of resembles on of those large
plastic chemical sprayers you might see at WalMart so I don't know
how much contact area I would have with any device.
Any help, suggestions or directions would be greatly appreciated.
Thanks.
David
__________________________________________________________
Looking for last minute shopping deals?
Find them fast with Yahoo! Search. http://tools.
search.yahoo.com/newsearch/category.php?category=shopping
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Thanks for the info. Where did you get your strain guage?
David
_____
From: b...@yahoogroups.com [mailto:b...@yahoogroups.com] On Behalf Of
John Biggs
Sent: Tuesday, February 05, 2008 7:09 PM
To: b...@yahoogroups.com
Subject: Re: [BasicX] Using the Basicx24 to read weight
If it were me I would use a strain gage glued to a piece of material. I have
done this. In my case I used a
tie wrap. I glued the strain gage to the smooth surface. Then the small
wires go to the wheatstone bridge.
I then run the output to an input pin on the BX24. http://www.omega.
com/literature/transactions/volume3/strain2.html
Hope this is helpful
John
----- Original Message ----
From: David_Basile
To: basicx@yahoogroups.
Sent: Tuesday, February 5, 2008 2:30:41 PM
Subject: [BasicX] Using the Basicx24 to read weight
I'm just getting back into my BasicX and searched the archives but
only saw a few old messages about this subject so I thought I would
revisit it.
I have a 15 gallon canister I need to weigh and constantly monitor
the weight of the contents inside so when I get down to 3 pounds I
know I have to reorder more chemical.
What is the best way to do this? I've seen mention of "load cells"
and "strain gauges" but not a whole lot of talk about them or how you
would use one with the BasicX. There is a device sold by Parallax
called FlexForce which says:
"The active sensing area is a .375" diameter circle at the end of the
sensor. The conductive leads are easy to connect to a breadboard or
through-hole area. The Flexiforce has an ideal output for A/D
conversion - 0V is no force and 4.2V is 100 lbs. The RCTIME command
may be used with a LOOKUP table or calibration formula to execute
some math to make the output useful. The kit includes a 220 ohm
resistor, 0.1 uF and 0.01 uF capacitors and the Flexiforce sensor."
Could this be used to get the weight? Or should I be looking for a
load cell or stress gauge? The problem with the canister is it is
not flat on the bottom and sort of resembles on of those large
plastic chemical sprayers you might see at WalMart so I don't know
how much contact area I would have with any device.
Any help, suggestions or directions would be greatly appreciated.
Thanks.
David
__________________________________________________________
Looking for last minute shopping deals?
Find them fast with Yahoo! Search. http://tools.
search.yahoo.com/newsearch/category.php?category=shopping
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Re: Using the Basicx24 to read weight - John Biggs - Feb 5 20:01:36 2008
If it were me I would use a strain gage glued to a piece of material. I have done this. In
my case I used a
tie wrap. I glued the strain gage to the smooth surface. Then the small wires go to the wheatstone bridge.
I then run the output to an input pin on the BX24. http://www.omega.com/literature/transactions/volume3/strain2.html
Hope this is helpful
John
----- Original Message ----
From: David_Basile
To: b...@yahoogroups.com
Sent: Tuesday, February 5, 2008 2:30:41 PM
Subject: [BasicX] Using the Basicx24 to read weight
I'm just getting back into my BasicX and searched the archives but
only saw a few old messages about this subject so I thought I would
revisit it.
I have a 15 gallon canister I need to weigh and constantly monitor
the weight of the contents inside so when I get down to 3 pounds I
know I have to reorder more chemical.
What is the best way to do this? I've seen mention of "load cells"
and "strain gauges" but not a whole lot of talk about them or how you
would use one with the BasicX. There is a device sold by Parallax
called FlexForce which says:
"The active sensing area is a .375" diameter circle at the end of the
sensor. The conductive leads are easy to connect to a breadboard or
through-hole area. The Flexiforce has an ideal output for A/D
conversion - 0V is no force and 4.2V is 100 lbs. The RCTIME command
may be used with a LOOKUP table or calibration formula to execute
some math to make the output useful. The kit includes a 220 ohm
resistor, 0.1 uF and 0.01 uF capacitors and the Flexiforce sensor."
Could this be used to get the weight? Or should I be looking for a
load cell or stress gauge? The problem with the canister is it is
not flat on the bottom and sort of resembles on of those large
plastic chemical sprayers you might see at WalMart so I don't know
how much contact area I would have with any device.
Any help, suggestions or directions would be greatly appreciated.
Thanks.
David
____________________________________________________________________________________
Looking for last minute shopping deals?
Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping
[Non-text portions of this message have been removed]
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
tie wrap. I glued the strain gage to the smooth surface. Then the small wires go to the wheatstone bridge.
I then run the output to an input pin on the BX24. http://www.omega.com/literature/transactions/volume3/strain2.html
Hope this is helpful
John
----- Original Message ----
From: David_Basile
To: b...@yahoogroups.com
Sent: Tuesday, February 5, 2008 2:30:41 PM
Subject: [BasicX] Using the Basicx24 to read weight
I'm just getting back into my BasicX and searched the archives but
only saw a few old messages about this subject so I thought I would
revisit it.
I have a 15 gallon canister I need to weigh and constantly monitor
the weight of the contents inside so when I get down to 3 pounds I
know I have to reorder more chemical.
What is the best way to do this? I've seen mention of "load cells"
and "strain gauges" but not a whole lot of talk about them or how you
would use one with the BasicX. There is a device sold by Parallax
called FlexForce which says:
"The active sensing area is a .375" diameter circle at the end of the
sensor. The conductive leads are easy to connect to a breadboard or
through-hole area. The Flexiforce has an ideal output for A/D
conversion - 0V is no force and 4.2V is 100 lbs. The RCTIME command
may be used with a LOOKUP table or calibration formula to execute
some math to make the output useful. The kit includes a 220 ohm
resistor, 0.1 uF and 0.01 uF capacitors and the Flexiforce sensor."
Could this be used to get the weight? Or should I be looking for a
load cell or stress gauge? The problem with the canister is it is
not flat on the bottom and sort of resembles on of those large
plastic chemical sprayers you might see at WalMart so I don't know
how much contact area I would have with any device.
Any help, suggestions or directions would be greatly appreciated.
Thanks.
David
____________________________________________________________________________________
Looking for last minute shopping deals?
Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping
[Non-text portions of this message have been removed]
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
Re: Using the Basicx24 to read weight - John Biggs - Feb 6 1:13:39 2008
I got it off ebay
----- Original Message ----
From: David E. Basile
To: b...@yahoogroups.com
Sent: Tuesday, February 5, 2008 4:51:42 PM
Subject: RE: [BasicX] Using the Basicx24 to read weight
John,
Thanks for the info. Where did you get your strain guage?
David
_____
From: basicx@yahoogroups. com [mailto:basicx@yahoogroups. com] On Behalf Of
John Biggs
Sent: Tuesday, February 05, 2008 7:09 PM
To: basicx@yahoogroups. com
Subject: Re: [BasicX] Using the Basicx24 to read weight
If it were me I would use a strain gage glued to a piece of material. I have
done this. In my case I used a
tie wrap. I glued the strain gage to the smooth surface. Then the small
wires go to the wheatstone bridge.
I then run the output to an input pin on the BX24. http://www.omega.
com/literature/ transactions/ volume3/strain2. html
Hope this is helpful
John
----- Original Message ----
From: David_Basile com>
To: basicx@yahoogroups. com
Sent: Tuesday, February 5, 2008 2:30:41 PM
Subject: [BasicX] Using the Basicx24 to read weight
I'm just getting back into my BasicX and searched the archives but
only saw a few old messages about this subject so I thought I would
revisit it.
I have a 15 gallon canister I need to weigh and constantly monitor
the weight of the contents inside so when I get down to 3 pounds I
know I have to reorder more chemical.
What is the best way to do this? I've seen mention of "load cells"
and "strain gauges" but not a whole lot of talk about them or how you
would use one with the BasicX. There is a device sold by Parallax
called FlexForce which says:
"The active sensing area is a .375" diameter circle at the end of the
sensor. The conductive leads are easy to connect to a breadboard or
through-hole area. The Flexiforce has an ideal output for A/D
conversion - 0V is no force and 4.2V is 100 lbs. The RCTIME command
may be used with a LOOKUP table or calibration formula to execute
some math to make the output useful. The kit includes a 220 ohm
resistor, 0.1 uF and 0.01 uF capacitors and the Flexiforce sensor."
Could this be used to get the weight? Or should I be looking for a
load cell or stress gauge? The problem with the canister is it is
not flat on the bottom and sort of resembles on of those large
plastic chemical sprayers you might see at WalMart so I don't know
how much contact area I would have with any device.
Any help, suggestions or directions would be greatly appreciated.
Thanks.
David
____________ _________ _________ _________ _________ _________ _
Looking for last minute shopping deals?
Find them fast with Yahoo! Search. http://tools.
search.yahoo. com/newsearch/ category. php?category= shopping
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]
____________________________________________________________________________________
Never miss a thing. Make Yahoo your home page.
http://www.yahoo.com/r/hs
[Non-text portions of this message have been removed]
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )
----- Original Message ----
From: David E. Basile
To: b...@yahoogroups.com
Sent: Tuesday, February 5, 2008 4:51:42 PM
Subject: RE: [BasicX] Using the Basicx24 to read weight
John,
Thanks for the info. Where did you get your strain guage?
David
_____
From: basicx@yahoogroups. com [mailto:basicx@yahoogroups. com] On Behalf Of
John Biggs
Sent: Tuesday, February 05, 2008 7:09 PM
To: basicx@yahoogroups. com
Subject: Re: [BasicX] Using the Basicx24 to read weight
If it were me I would use a strain gage glued to a piece of material. I have
done this. In my case I used a
tie wrap. I glued the strain gage to the smooth surface. Then the small
wires go to the wheatstone bridge.
I then run the output to an input pin on the BX24. http://www.omega.
com/literature/ transactions/ volume3/strain2. html
Hope this is helpful
John
----- Original Message ----
From: David_Basile
To: basicx@yahoogroups.
Sent: Tuesday, February 5, 2008 2:30:41 PM
Subject: [BasicX] Using the Basicx24 to read weight
I'm just getting back into my BasicX and searched the archives but
only saw a few old messages about this subject so I thought I would
revisit it.
I have a 15 gallon canister I need to weigh and constantly monitor
the weight of the contents inside so when I get down to 3 pounds I
know I have to reorder more chemical.
What is the best way to do this? I've seen mention of "load cells"
and "strain gauges" but not a whole lot of talk about them or how you
would use one with the BasicX. There is a device sold by Parallax
called FlexForce which says:
"The active sensing area is a .375" diameter circle at the end of the
sensor. The conductive leads are easy to connect to a breadboard or
through-hole area. The Flexiforce has an ideal output for A/D
conversion - 0V is no force and 4.2V is 100 lbs. The RCTIME command
may be used with a LOOKUP table or calibration formula to execute
some math to make the output useful. The kit includes a 220 ohm
resistor, 0.1 uF and 0.01 uF capacitors and the Flexiforce sensor."
Could this be used to get the weight? Or should I be looking for a
load cell or stress gauge? The problem with the canister is it is
not flat on the bottom and sort of resembles on of those large
plastic chemical sprayers you might see at WalMart so I don't know
how much contact area I would have with any device.
Any help, suggestions or directions would be greatly appreciated.
Thanks.
David
____________ _________ _________ _________ _________ _________ _
Looking for last minute shopping deals?
Find them fast with Yahoo! Search. http://tools.
search.yahoo. com/newsearch/ category. php?category= shopping
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]
____________________________________________________________________________________
Never miss a thing. Make Yahoo your home page.
http://www.yahoo.com/r/hs
[Non-text portions of this message have been removed]
(You need to be a member of basicx -- send a blank email to basicx-subscribe@yahoogroups.com )