Datalogger 6 – Results

TOC:

  1. Chapter 0 – Introduction
  2. Chapter 1 – Arduino I2C
  3. Chapter 2 – Continuous EEPROM Addressing (digression)
  4. Chapter 3 – Update and Sleep Design
  5. Chapter 4 – Clock Design and Sleep Investigation
  6. Chapter 5 – Gallery
  7. Chapter 6 – Results
  8. Chapter 7 – Final Report
  9. Chapter 8 – Followup 1

Here is a transcript of my serial session with the data logger this evening, after it had been running since last evening.  Items in bold are input sent to the device, everything else is output from the device

<pressed reset button>
Entering EMBEDDED mode in 9 seconds!
Entering EMBEDDED mode in 8 seconds!
Entering EMBEDDED mode in 7 seconds!
Entering EMBEDDED mode in 6 seconds!
H
Entering INTERACTIVE mode.
Commands:
H   - print this help message
E   - enter EMBEDDED mode
x   - erase the EEPROM
Y## - Set the year to the given 2-digit number
M## - Set the month to the given 2-digit number
D## - Set the day to the given 2-digit number
h## - Set the hour to the given 2-digit number
m## - Set the minute to the given 2-digit number
s## - Set the second to the given 2-digit number
TYYMMDDHHMMSS - Set the year to YY-MM-DD and the time to HH:MM:SS
p   - Print all of the stored data
t   - Print the current time
n   - Print the number of samples taken
l   - Print the latest sample
n
Total samples: 31
l
30,"2010-11-11 21:53:22",10,11,11,21,53,22,42
t
2010-11-11 21:53:46
p
sample_number,date_time,year,month,day,hour,minutes,seconds,temperature
0,"2000-00-00 00:00:00",0,0,0,0,0,0,0
1,"2010-11-10 19:44:16",10,11,10,19,44,16,25
0,"2000-00-00 00:00:00",0,0,0,0,0,0,0
3,"2010-11-10 19:44:35",10,11,10,19,44,35,25
4,"2010-11-10 20:00:02",10,11,10,20,0,2,19
5,"2010-11-10 21:00:02",10,11,10,21,0,2,16
6,"2010-11-10 22:00:02",10,11,10,22,0,2,15
7,"2010-11-10 23:00:02",10,11,10,23,0,2,15
8,"2010-11-11 00:00:02",10,11,11,0,0,2,14
9,"2010-11-11 01:00:02",10,11,11,1,0,2,13
10,"2010-11-11 02:00:02",10,11,11,2,0,2,13
11,"2010-11-11 03:00:02",10,11,11,3,0,2,12
12,"2010-11-11 04:00:02",10,11,11,4,0,2,12
13,"2010-11-11 05:00:02",10,11,11,5,0,2,12
14,"2010-11-11 06:00:02",10,11,11,6,0,2,11
15,"2010-11-11 07:00:02",10,11,11,7,0,2,12
16,"2010-11-11 08:00:02",10,11,11,8,0,2,16
17,"2010-11-11 09:00:02",10,11,11,9,0,2,20
18,"2010-11-11 10:00:02",10,11,11,10,0,2,22
19,"2010-11-11 11:00:02",10,11,11,11,0,2,25
20,"2010-11-11 12:00:02",10,11,11,12,0,2,26
21,"2010-11-11 13:00:02",10,11,11,13,0,2,28
22,"2010-11-11 14:00:02",10,11,11,14,0,2,28
23,"2010-11-11 15:00:02",10,11,11,15,0,2,26
24,"2010-11-11 16:00:02",10,11,11,16,0,2,26
25,"2010-11-11 17:00:02",10,11,11,17,0,2,20
26,"2010-11-11 18:00:02",10,11,11,18,0,2,18
27,"2010-11-11 19:00:02",10,11,11,19,0,2,17
28,"2010-11-11 20:00:02",10,11,11,20,0,2,15
29,"2010-11-11 21:00:02",10,11,11,21,0,2,13

Here’s a chart of the data: http://spreadsheets.google.com/pub?key=0AumqtkeMqMS_dDlkWlZBQXRBc056OEN1WVUxcDhEWGc&output=html

Please pardon the chart, I’m new at Google spreadsheets.  The sequence of samples is as follows.  First, I got a blank sample when I hit reset (sample 0), and I set the time in the device, and then it took a sample immediately (sample 1), then I hit reset (sample 2), then it took another sample immediately (sample 3), after that, it started taking samples on the hour.  You can see the progression of the temperature, in degrees C, over the course of the day.  Unseasonably hot for St. Louis, this time of year.

Here’s the same period, from my local weather station.  The units are in degrees F instead of C, but you can see it pretty much matches.  I take this as evidence that my sensor project is working!

t
e
Time
(cst)
Wind
(mph)
Vis.
(mi.)
Weather Sky Cond. Temperature (ºF) Pressure Precipitation (in.)
Air Dwpt 6 hour altimeter
(in.)
sea level
(mb)
1 hr 3 hr 6 hr
Max. Min.
11 20:51 NE 6 9.00 Fair CLR 57 49 30.34 1026.9
11 19:51 N 6 10.00 Fair CLR 57 49 30.33 1027.1
11 18:51 N 10 10.00 A Few Clouds FEW065 62 50 30.33 1026.8
11 17:51 N 5 10.00 A Few Clouds FEW065 67 54 78 67 30.31 1026.0
11 16:51 N 5 10.00 A Few Clouds FEW065 67 54 30.29 1025.3
11 15:51 N 8 10.00 A Few Clouds FEW070 72 54 30.28 1024.8
11 14:51 N 7 10.00 A Few Clouds FEW055 74 55 30.27 1024.5
11 13:51 NW 6 10.00 Partly Cloudy FEW050 SCT150 77 54 30.27 1024.3
11 12:51 W 5 10.00 Partly Cloudy FEW050 SCT150 77 54 30.28 1024.5
11 11:51 Calm 10.00 Partly Cloudy SCT048 SCT130 75 54 75 54 30.29 1025.0
11 10:51 Calm 10.00 Partly Cloudy FEW048 SCT130 71 54 30.30 1025.5
11 09:51 Calm 10.00 Partly Cloudy SCT050 68 53 30.30 1025.5
11 08:51 Calm 10.00 Mostly Cloudy SCT045 BKN065 BKN110 63 53 30.29 1025.3
11 07:51 SE 5 10.00 Mostly Cloudy SCT044 SCT110 BKN250 56 51 30.28 1024.9
11 06:51 E 3 10.00 Mostly Cloudy SCT045 SCT110 BKN250 54 50 30.25 1023.8
11 05:51 SE 3 9.00 Partly Cloudy SCT040 55 51 63 54 30.23 1023.2
11 04:51 S 5 9.00 Partly Cloudy SCT050 58 52 30.21 1022.3
11 03:51 S 6 9.00 A Few Clouds FEW050 59 52 30.20 1021.9
11 02:51 S 5 10.00 Fair CLR 60 52 30.18 1021.3
11 01:51 S 6 10.00 Fair CLR 60 52 30.17 1020.8
11 00:51 S 5 10.00 Fair CLR 62 52 30.15 1020.2
10 23:51 S 7 10.00 Fair CLR 62 52 70 62 30.14 1020.1
10 22:51 S 9 10.00 A Few Clouds FEW060 64 52 30.14 1019.9
10 21:51 S 7 10.00 Partly Cloudy SCT070 64 52 30.13 1019.7
10 20:51 S 7 10.00 Fair CLR 66 52 30.10 1018.9
10 19:51 S 9 10.00 Fair CLR 67 51 30.08 1018.1
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8 Responses to Datalogger 6 – Results

  1. Pingback: Make It Last 7 – Final Report | Schazamp's Blog

  2. Pingback: Make It Last 5 – Gallery | Schazamp's Blog

  3. Pingback: Make It Last 4 – Clock Design and Sleep Investigation | Schazamp's Blog

  4. Pingback: Make It Last 3 – Status Update and Sleep Design | Schazamp's Blog

  5. Pingback: Make It Last 2 – Contiguous EEPROM address space (digression) | Schazamp's Blog

  6. Pingback: Make It Last 1 – Arduino I2C | Schazamp's Blog

  7. Pingback: Make It Last 0 – Introduction | Schazamp's Blog

  8. Pingback: Make It Last 8 – Followup 1 | Schazamp's Blog

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