HELP?????????

Archiver

did any body read message 841?
Perhaps my subject was not correct but i'm still having problems.
I'm already find out that there is a 5V regulator on the stamp!
But i still don't now how to set de ds1302 from out VB6.0
And i'm wondering how long the stamp will run on a 9v battery?

regards
Willem.

Archiver

> did any body read message 841?
> Perhaps my subject was not correct but i'm still having problems.
> I'm already find out that there is a 5V regulator on the stamp!
> But i still don't now how to set de ds1302 from out VB6.0
> And i'm wondering how long the stamp will run on a 9v battery?

> hello every body,
> i' joined this group this week. lookes very nice! i started a project
> with a BS2 stamp to measure the pulses from a tipping bucket
> raingauge. hourley a write the amount off pulses with a time stamp
> (from the DS1302) into memory. In VB6.0 i made a users program to set
> parameters and read de data from the stamp. All working well so far.
> BUT.....
> 1)in the example off the DS1302 they are using i.e. $12 to set the
> time or date etc, how can i set the ds1302 time from out VB6.0?
> 2) how long will a 9V battery power the stamp (consuming app.6mA)?
> 3)what extended memory will i use (writing the time and the amount
> off pulses every hour use a lot of EEprom space)
> exusses for the englisch gramatica but i'm doing my best.
> regards
> Willem
> (the netherlands)

Hi Willem,
I'm not clear on what problem you are having with the DS1302. It sounds
like you are able to read and write data okay. I think Matt Parnell uses a
DS1306 in his "weatherstamp" and has some example code posted that might
help you. <http://www.oeonline.com/~tparnell/index.html> The DS1302 is
similar to the DS1306. Does your question focus on the BCD number format?
Like how to send $12 from VB? Actually you can take advantage of the BS2
modifiers for SERINto receive the data in one format (decimal or binar,y
say) and then translate it to $12 using the HEX modifier to send it with
SEROUT to the clock chip. Al Williams' site has lots of info on VB
<http://www.al-williams.com/awce.htm>.

Assuming 500mah for a fresh 9v alakaline battery, 500/6=83 hours=3+ days.
You can improve the life of the battery a lot by using the SLEEP or NAP
instruction in your program. I have some info on that vis a vis rain gages
at <http://www.emesystems.com/OW2face.htm#rain>.

A lot of us use the 25Cxxx serial eeproms for storing data. For easiest
interface, Parallax offers the Stampmem, which is a 64kbyte memory module,
and the RAMPAK-B, an 8k ram module.

Good luck!

-- Tracy Allen
Electronically Monitored Ecosystems
http://www.emesystems.com

Archiver

Thanks Tracy!!
The wheel was already invented!! I think i have to re-design, but
with your info i will more be able!
In deed my question is focussing on the BCD number format and how to
send $12 from VB. I think i understand de meaning... send from VB a
ASCII caracter and send true de Stamp In $(ascii) to the DS1302! i
will work it out.

I used a brand new 9V alkaline and it was burned out in two or so
days.. now i understand!! With de sleep command i think the autonomie
will be better!!

I also wanted to log every hour, but when there is no rainfall you
don't have to store it....(open door??). So perhaps with smart
programming i can use the standard eeprom, i will see.

thanks again and best regards
Willem

Archiver

willem,

Onset computer corporation makes rain gauge dataloggers for under $100

http://www.onsetcomp.com/welcome.html

they are nice units, built with all surface mount parts and will run for
over a year
with a small lithium battery (CR2032). I've built similiar units for my
job using the BSII,
gave it up after Onset's hit the scene.

fwiw,

steve




At 09:20 PM 04/16/2000 -0000, you wrote:
>Thanks Tracy!!
>The wheel was already invented!! I think i have to re-design, but
>with your info i will more be able!
>In deed my question is focussing on the BCD number format and how to
>send $12 from VB. I think i understand de meaning... send from VB a
>ASCII caracter and send true de Stamp In $(ascii) to the DS1302! i
>will work it out.
>
>I used a brand new 9V alkaline and it was burned out in two or so
>days.. now i understand!! With de sleep command i think the autonomie
>will be better!!
>
>I also wanted to log every hour, but when there is no rainfall you
>don't have to store it....(open door??). So perhaps with smart
>programming i can use the standard eeprom, i will see.
>
>thanks again and best regards
>Willem
>
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