** ** ** WAIT, I hit the SUBMIT BUTTON by mistake! ** ** **
Here it is.
I am considering using FRAM from RAMTRON for some datalogging.
***********************************************************
My son is almost old enough for a driving learning permit.
I want to log the g-forces on the car/truck
***********************************************************
Currently, I am thinking....(oops)
3-Axis accelerometer from sparc(isnotso)fun
DS1307 module (also from sparc(isnotso)fun )
picaxe 20x2/28x2(also from sparc(isnotso)fun )
I do not yet have the DS1307, so I have not investigated the data format from it.
Mouser has the RAMTRON F-RAM. I must determine what I NEED to log.
I am thinking that on POWER-UP log the date and time.
At any over-limit on the X/Y/Z axis, log the offending axes values with date/timestamp.
-------------------If I had a GPS module, I could really keep tabs on him!
I have powered the accelerometer from batteries, so I have an idea what values I get for certain x/y position values(Z is different)
The X/Y/Z axes will be 8-bit (using readadc) (NOT READADC10!!!!!)
So if I need to log the AXES datum AND data/time, I will need :
8-bit, 8-bit, 8-bit plus whatever datasize is returned for the date/time.
I do not want to continuously log the values, just the OUT OF BOUNDS data values with corresponding data/timestamps.
WAIT -- some RAMTRONICS modules HAVE RTC in-built! Oops, Built in!
hold off on comments, until I can look into this.
Using an FM3130 (64k) I could get approx 8000 timestamped samples(have not done the math yet!) --- enough to convict!!!!
Alas, I want more samples... ((((ALL 512K do not have RTC or are not in stock or OBSOLETE-----)
OK - it looks like the 31xx series has 64k + RTC. I will have to live with 64K/8000 samples. the rest are either not available(not in stock) or obsolete.. (mouser, anyway)
Here it is.
I am considering using FRAM from RAMTRON for some datalogging.
***********************************************************
My son is almost old enough for a driving learning permit.
I want to log the g-forces on the car/truck
***********************************************************
Currently, I am thinking....(oops)
3-Axis accelerometer from sparc(isnotso)fun
DS1307 module (also from sparc(isnotso)fun )
picaxe 20x2/28x2(also from sparc(isnotso)fun )
I do not yet have the DS1307, so I have not investigated the data format from it.
Mouser has the RAMTRON F-RAM. I must determine what I NEED to log.
I am thinking that on POWER-UP log the date and time.
At any over-limit on the X/Y/Z axis, log the offending axes values with date/timestamp.
-------------------If I had a GPS module, I could really keep tabs on him!
I have powered the accelerometer from batteries, so I have an idea what values I get for certain x/y position values(Z is different)
The X/Y/Z axes will be 8-bit (using readadc) (NOT READADC10!!!!!)
So if I need to log the AXES datum AND data/time, I will need :
8-bit, 8-bit, 8-bit plus whatever datasize is returned for the date/time.
I do not want to continuously log the values, just the OUT OF BOUNDS data values with corresponding data/timestamps.
WAIT -- some RAMTRONICS modules HAVE RTC in-built! Oops, Built in!
hold off on comments, until I can look into this.
Using an FM3130 (64k) I could get approx 8000 timestamped samples(have not done the math yet!) --- enough to convict!!!!
Alas, I want more samples... ((((ALL 512K do not have RTC or are not in stock or OBSOLETE-----)
OK - it looks like the 31xx series has 64k + RTC. I will have to live with 64K/8000 samples. the rest are either not available(not in stock) or obsolete.. (mouser, anyway)
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