= Energy and Power test =

== Hardware ==

1x Board   : [https://www.raspberrypi.org/products/raspberry-pi-2-model-b/ Raspberry PI 2 model B][[BR]]
4x Wifi    : [http://www.edimax.com/edimax/merchandise/merchandise_detail/data/edimax/uk/wireless_adapters_ac600_dual-band/ew-7811usc/ Edimax model EW-7811USC] [[BR]]
1x Storage : [https://www.sandisk.nl/home/memory-cards/microsd-cards/ultra-microsd-for-cameras Sandisk Ultra 16Gb micro SD class 10] [[BR]]
1x Power   : [http://www.xtorm.eu/nl/power-hubs/vectr-power-hub/ USB to microUSB 8A / 5V / 40w (Xtorm XPD07)] [[BR]]
1x Cable   : [https://www.mediamarkt.nl/nl/product/_be-hello-charge-and-sync-kabel-1-2m-zwart-1418363.html USB to microUSB fastcharge cable 2.1A at 1.2m 1x (Behello BEHCBL0015)] [[BR]]
1x Monitor : [http://www.portablepowersupplies.co.uk/portapow-premium-usb-dc-power-monitor/ Portapow Premium USB + DC Power Monitor] [[BR]]
2x Monitor : [http://maxxter.biz/default.aspx?op=products&op2=item&id=8540 Maxxter USB power meter] [[BR]]
1x Meter   : [http://assets.fluke.com/manuals/7926____iseng0200.pdf Fluke 79III (niet gecalibreerd) [[BR]]



== Software ==
{{{
Raspbian Lite 	: https://downloads.raspberrypi.org/raspbian_lite_latest  (March 2016 / 2016-03-18 /  Kernel 4.1)
Wifi Driver   	: https://dl.dropboxusercontent.com/u/80256631/8812au-4.1.18-v7-846.tar.gz 
Source Driver   : https://github.com/gnab/rtl8812au 
}}}

== Testing Setup ==
[[Image(http://www.wirelessleiden.nl/album/var/resizes/hardware/Raspberry-pi-node/20160322_203009.jpg?m=1458675274, 360px)]]
[[Image(http://www.wirelessleiden.nl/album/var/albums/hardware/Raspberry-pi-node/20160322_211509.jpg?m=1458678751, 360px)]]
[[Image(http://www.wirelessleiden.nl/album/var/resizes/hardware/Raspberry-pi-node/20160322_213140.jpg?m=1458678961, 360px)]]

We hebben de Portapow direct aangesloten op onze USB power supply van Xtorm middels de bijgeleverde USB kabels.[[BR]]
Op de test aansluitingen van de Portapow hebben we een Fluke 79III aangesloten om de spanningen te vergelijken (mogelijk verschillen in spanning)[[BR]]
De USB uitgang van de Portapow sluiten we direct aan middels een 1.2 meter lange USB to Microusb kabel aan op de Raspberry PI 2 model B

== Installed packages ==
{{{
pi@raspberrypi:~ $ sudo apt-get update
pi@raspberrypi:~ $ sudo apt-get install htop
pi@raspberrypi:~ $ sudo apt-get install hostapd isc-dhcp-server
pi@raspberrypi:~ $ sudo apt-get install ebtables
}}}

== Meetingen zonder Wifi Traffic en standaard Raspbian Lite OS ==

Verschil spanning tussen de portapow en Fluke 79III is max 0.01 volt geconstateerd.

||= Aangesloten =||= Portapow =||= Fluke 79III =||= Verschil =||= Stroom =||= Vermogen =||= Opmerking =||
|| Niets    || 5.0593 V || 5.06 V || 0.0007 V || 0 A || 0 mW || Niets op de USB uitgang aangesloten ||
||RB PI 2B  || 5.0524 V || 5.06 V || 0.0076 V || 0.0706 A || 356 mW || RB PI 2 B ||
||RB PI 2B + SD || 5.0393 V||5.04 V || 0.0007 V || 0.2087 A || 1.051 W || RB PI 2B + SD Raspbian ||
||RB PI 2B + SD + DVI || 5.0392 V||5.04 V || 0.0007 V || 0.2095 A || 1.056 W || RB PI 2B + SD Raspbian + DVI ||
||RB PI 2B + SD + DVI + UTP || 5.0345 V||5.04 V || 0.0055 V || 0.2597 A || 1.307 W || RB PI 2B + SD Raspbian + DVI + UTP ||
||RB PI 2B + SD + 3x Wifi + UTP || 5.0278 V||5.03 V || 0.0022 V || 0.3349 A || 1.755 W || RB PI 2B + SD Raspbian + DVI + UTP + 3x Wifi ||
||RB PI 2B + SD + 4x Wifi + UTP || 5.0259 V||5.03 V || 0.0041 V || 0.3585 A || 1.802 W || RB PI 2B + SD Raspbian + DVI + UTP + 4x Wifi ||


[[BR]]

SD betekend dat er een SD kaart is geplaatst met de standaard Raspbian OS op geinstalleerd[[BR]]
DVI betekend dat er een monitor op de DVI aansluiting is aangesloten.[[BR]]
Wifi - Usb Wifi adapter geplaats zonder dat deze geconfigureerd is.

== Binairy Wifi Driver installeren ==

{{{
pi@raspberrypi:~ $ wget https://dl.dropboxusercontent.com/u/80256631/8812au-4.1.18-v7-846.tar.gz 
converted 'https://dl.dropboxusercontent.com/u/80256631/8812au-4.1.18-v7-846.tar.gz' (ANSI_X3.4-1968) -> 'https://dl.dropboxusercontent.com/u/80256631/8812au-4.1.18-v7-846.tar.gz' (UTF-8)
--2016-03-22 20:39:10--  https://dl.dropboxusercontent.com/u/80256631/8812au-4.1.18-v7-846.tar.gz
Resolving dl.dropboxusercontent.com (dl.dropboxusercontent.com)... 45.58.74.165
Connecting to dl.dropboxusercontent.com (dl.dropboxusercontent.com)|45.58.74.165|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 746473 (729K) [application/octet-stream]
Saving to: '8812au-4.1.18-v7-846.tar.gz'

8812au-4.1.18-v7-846.tar.gz     100%[=======================================================>] 728.98K  1.49MB/s   in 0.5s   

2016-03-22 20:39:12 (1.49 MB/s) - '8812au-4.1.18-v7-846.tar.gz' saved [746473/746473]

pi@raspberrypi:~ $ ls
8812au-4.1.18-v7-846.tar.gz
pi@raspberrypi:~ $ gunzip 8812au-4.1.18-v7-846.tar.gz 
pi@raspberrypi:~ $ ls
8812au-4.1.18-v7-846.tar
pi@raspberrypi:~ $ tar xvf 8812au-4.1.18-v7-846.tar 
8812au.ko
8812au.conf
install.sh
pi@raspberrypi:~ $ ls
8812au-4.1.18-v7-846.tar  8812au.conf  8812au.ko  install.sh
pi@raspberrypi:~ $ sudo ./install.sh 
sudo cp 8812au.conf /etc/modprobe.d/.
sudo install -p -m 644 8812au.ko /lib/modules/4.1.18-v7+/kernel/drivers/net/wireless
sudo depmod 4.1.18-v7+

Reboot to run the driver.

If you have already configured your wifi it should start up and connect to your
wireless network.

If you have not configured your wifi you will need to do that to enable the wifi.
pi@raspberrypi:~ $ sudo reboot
}}}

== Meetingen zonder Wifi Traffic en standaard Raspbian Lite OS met driver geinstalleerd ==

Verschil spanning tussen de portapow en Fluke 79III is max 0.01 volt geconstateerd.

||= Aangesloten =||= Portapow =||= Fluke 79III =||= Verschil =||= Stroom =||= Vermogen =||= Opmerking =||
||RB PI 2B + SD + 4x Wifi + UTP || 5.060 V||5.03 V || 0.004 V || 0.3580 A || 1.798 W || RB PI 2B + SD Raspbian + DVI + UTP + 4x Wifi ||