Since recording started on 13:00:00 aug/28/2008
Maximum = 14.2v at 13:00:00 aug/28/2008
Minimum = 12.5v at 05:00:00 aug/29/2008
OK, normis, may I have my /system health voltage on the RB433 please??
If this belongs under Scripting better, please move it. I thought this might be helpful troubleshooting power problems, so I put it here first.
Actually, I should not have been so subtle. That was a request for the “/system health voltage” on the RB433 in the next hardware/software release. Maybe??
ADD: Tomorrow’s daily voltage report is the one I am waiting for. Hurricane Gustav is just “down the street” from us. Wind, rain, and very cloudy skies. According to all calculations, the battery will hold its charge through it.
BTW, there is a bright side th hurricane Gustav. The surf will be double-overhead this morning!!
ADD: I feel for the residents of New Orleans. Hope all is well for those that live there. I would gladly give up the surf in exchange, but that is not how it works.
Just an update. I tried this on a RB433AH with a 12vdc 500ma wall wart power supply I got with an old Linksys router. I found the input voltage corresponded in an exact relationship with the line voltage. So I tried a modification to the routine, and sure enough, it matched my line voltage every hour:
Daily voltage report for test on sep/02/2008
23:00 = 13.8 Line voltage = 117
22:00 = 14.0 Line voltage = 119
21:00 = 13.9 Line voltage = 118
20:00 = 13.6 Line voltage = 115
19:00 = 13.7 Line voltage = 116
18:00 = 13.5 Line voltage = 114
17:00 = 13.4 Line voltage = 113
16:00 = 13.3 Line voltage = 113
15:00 = 13.3 Line voltage = 113
14:00 = 13.3 Line voltage = 113
13:00 = 13.7 Line voltage = 116
12:00 = 13.7 Line voltage = 116
11:00 = 13.8 Line voltage = 117
10:00 = 13.5 Line voltage = 114
09:00 = 13.7 Line voltage = 116
08:00 = 14.0 Line voltage = 119
07:00 = 14.1 Line voltage = 119
06:00 = 13.9 Line voltage = 118
05:00 = 14.0 Line voltage = 119
04:00 = 14.1 Line voltage = 119
03:00 = 14.0 Line voltage = 119
02:00 = 14.1 Line voltage = 119
01:00 = 14.1 Line voltage = 119
00:00 = 13.9 Line voltage = 118
Since voltmonitor started on 16:00:00 sep/01/2008
Maximum = 14.1v at 01:00:00 sep/02/2008
Minimum = 13.3v at 14:00:00 sep/02/2008
So if you think your wall wart is delivering EXACTLY what is on the label, THINK AGAIN!
ADD: My calculations show a 24vdc 1000ma unregulated power supply with a 300ma load may exceed 30vdc, but only between midnight and 6AM.
This would also depend on the regulator on the RBXXX unit. I have not evaluated the circuit, and have no intention of doing so right now, but there are two basic regulator types in use today:
linear - maintains a constant input current despite variations in input voltage.
PWM - maintains a constant input power despite variations in input voltage.
The second type is more efficient, and the one I am hoping the RouterBoard team uses. That will make the current drop as the supply voltage increases, which would actually amplify the condition above. 300ma at 24vdc would be about 240ma at 30vdc.
