Powerline Experiments 
Thursday, December 5, 2013, 09:37 AM
Posted by Administrator
Back in May 2012 I purchased some TP-Link powerline adapters.

See blog entry
http://rocode.com/blog/index.php?entry=Powerline-Ethernet

Today I received delivery of brand new NetComm adapters with Gigabit RJ45 connectors.

I purchased a kit with 2 units for $149.

I have done a speed test comparison over my internal network for them! I used the Linux iperf command.

Firstly the TP-Link:

rohan@rohan-tv:~$ iperf -c 192.168.1.1
------------------------------------------------------------
Client connecting to 192.168.1.1, TCP port 5001
TCP window size: 23.5 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.1.2 port 58424 connected with 192.168.1.1 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 76.2 MBytes 63.8 Mbits/sec
rohan@rohan-tv:~$

[rohan@FreePBX ~]$ iperf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[ 4] local 192.168.1.1 port 5001 connected with 192.168.1.2 port 58424
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.1 sec 76.2 MBytes 63.1 Mbits/sec


Secondly the NetComm:

rohan@rohan-tv:~$ iperf -c 192.168.1.1
------------------------------------------------------------
Client connecting to 192.168.1.1, TCP port 5001
TCP window size: 23.5 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.1.2 port 48693 connected with 192.168.1.1 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 110 MBytes 92.2 Mbits/sec
rohan@rohan-tv:~$

[rohan@FreePBX ~]$ iperf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
[ 4] local 192.168.1.1 port 5001 connected with 192.168.1.2 port 48693
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.1 sec 110 MBytes 91.3 Mbits/sec


So my upgrade has increased my internal LAN speed by 50% to just under 100Mbps across my raw power wiring.

Once again I don't get anywhere near the manufacture's maximum speed as rated on the appliances. Regardless of this I am still happy with the performance increase.
view entry ( 2997 views )   |  permalink
Raspberry Pi GPIO and Sensors 
Tuesday, October 22, 2013, 07:14 AM
Posted by Administrator
My website now details some of the sensors that I have connected to the GPIO ports of my Raspberry Pi.

http://rocode.com/sensors/

This includes:
- Reed Switch
- PIR Module
- Pressure Mat

Elvin notifications are emitted around my LAN to subscribed desktops and LED displays.
view entry ( 2752 views )   |  permalink
SDR# and the EZCap DVB-T tuner 
Friday, August 16, 2013, 03:25 AM
Posted by Administrator
Using SDR# and RTL-SDR I am now able to remotely scan signals on my living room TV antenna.

http://www.rocode.com/sdrsharp/

view entry ( 3481 views )   |  permalink
Update Monitoring VK3RTV with a LED Display  
Saturday, August 10, 2013, 06:05 AM
Posted by Administrator
I have updated my page with details of my new LED Display and how I have connected it to my Elvin router.

http://www.rocode.com/amateurradio/VK3RTVLedDisplay.html

I created an Elvin producer and consumer for the LED Display and have now added synthesized announcements when monitoring VK3RTV.

A curfew is enforced between 10pm and 8am with regards to audio announcements.
view entry ( 2962 views )   |  permalink
Monitoring VK3RTV with a LED Display 
Thursday, June 20, 2013, 07:28 AM
Posted by Administrator
I have added a page with details of my new LED Display and how I have connected it to my Elvin router.

http://www.rocode.com/amateurradio/VK3RTVLedDisplay.html

I created an Elvin producer and consumer for the LED Display and connected it to my Temperature and VK3RTV Monitoring scripts.


view entry ( 2685 views )   |  permalink

<<First <Back | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | Next> Last>>