After actually getting my standard Pi to work I noted the slow sampling rate and other constraints caused by writing all the data to a Micro-SD card.
Anyway, Western Digital now offer small hard drives with a provided Micro-SD card to boot the drive.
Has anyone tried this with their energy monitor?
http://wdlabs.wd.com/category/wd-pidrive/
Anyone Tried Using A WD PiDrive?
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- Posts: 6
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Re: Anyone Tried Using A WD PiDrive?
I have ordered one...
250GB Western Digital PiDrive - Foundation Edition
Hopefully then it should be possible to increases the data sample rate and get accurate daily energy consumption figures.
Time will tell...
250GB Western Digital PiDrive - Foundation Edition
Hopefully then it should be possible to increases the data sample rate and get accurate daily energy consumption figures.
Time will tell...
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Re: Anyone Tried Using A WD PiDrive?
We have a Raspberry Pi running a version of our DashBox with a portable HDD. It works pretty well.Automan wrote:I have ordered one...
250GB Western Digital PiDrive - Foundation Edition
Hopefully then it should be possible to increases the data sample rate and get accurate daily energy consumption figures.
Time will tell...
If you're using an RPi 3, make sure you use a 3A+ 5V power supply as the Pi is power hungry.
EDIT:
Write:
dd if=/dev/zero of=~/test.tmp bs=500K count=1024
1024+0 records in
1024+0 records out
524288000 bytes (524 MB) copied, 28.4798 s, 18.4 MB/s
Read:
dd if=~/test.tmp of=/dev/null bs=500K count=1024
1024+0 records in
1024+0 records out
524288000 bytes (524 MB) copied, 29.741 s, 17.6 MB/s
Ben
Brultech Research Inc.
E: ben(at)brultech.com
Brultech Research Inc.
E: ben(at)brultech.com
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Re: Anyone Tried Using A WD PiDrive?
All my bits finally arrived and not 100% impressed with the WD 6" case which on the rear exposes the PCB's of the Pi and the Hard Drive to damage.
In my btmon.cfg I have set oem_upload_period = 0 which makes the inputs web page say updated typically staying at 1s but sometimes up to 5s
So I guess still not real time
System at present says
Memory RAM
Used 19.56%
Total: 923.35 MB Used: 180.64 MB Free: 742.71 MB
Swap
Used 0.00%
Total: 100 MB Used: 0 B Free: 100 MB
Disk Mount Stats
/
Used 0.59%
Total: 228.98 GB Used: 1.35 GB Free: 215.97 GB
/boot
Used 32.19%
Total: 64.97 MB Used: 20.92 MB Free: 44.05 MB
It will be interesting to see if the data is being stored on the hard drive.
In my btmon.cfg I have set oem_upload_period = 0 which makes the inputs web page say updated typically staying at 1s but sometimes up to 5s
So I guess still not real time
System at present says
Memory RAM
Used 19.56%
Total: 923.35 MB Used: 180.64 MB Free: 742.71 MB
Swap
Used 0.00%
Total: 100 MB Used: 0 B Free: 100 MB
Disk Mount Stats
/
Used 0.59%
Total: 228.98 GB Used: 1.35 GB Free: 215.97 GB
/boot
Used 32.19%
Total: 64.97 MB Used: 20.92 MB Free: 44.05 MB
It will be interesting to see if the data is being stored on the hard drive.
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- Joined: Sat Jul 17, 2010 10:32 pm
Re: Anyone Tried Using A WD PiDrive?
The PiDrives are being discontinued and the prices appear to have dropped.
I bought a 250GB drive with the special USB cable and preloaded micro SD card for $23.19 and later bought a 6x6 case for $8.79.
Both orders were less than the listed $50 minimum for free shipping, but no shipping charge was added.
Yes, there is a cutout in the base of the 6x6 case under the edges of the pi and the drive, but is about 7/8" by 1 1/8" and doesn't bother me. So far, I'm pleased with purchases.
I bought a 250GB drive with the special USB cable and preloaded micro SD card for $23.19 and later bought a 6x6 case for $8.79.
Both orders were less than the listed $50 minimum for free shipping, but no shipping charge was added.
Yes, there is a cutout in the base of the 6x6 case under the edges of the pi and the drive, but is about 7/8" by 1 1/8" and doesn't bother me. So far, I'm pleased with purchases.
Satisfied Brultech customer since 2008.