A Low-Power Combined Echolink and ATV Server - Versionsgeschichte

Dl8rds: /* CPU Unit */

2011-03-22T23:00:32Z

‎CPU Unit

Dl8rds: /* Recent Developments */

2010-09-10T02:52:37Z

‎Recent Developments

Dl8rds: /* Recent Developments */

2010-06-28T02:45:01Z

‎Recent Developments

Dl8rds: /* Recent Developments */

2010-06-28T02:43:21Z

‎Recent Developments

Dl8rds: /* Recent Developments */

2010-06-28T02:43:11Z

‎Recent Developments

Dl8rds: /* Software */

2009-12-23T02:37:45Z

‎Software

Dl8rds: /* Recent Developments */

2009-12-23T02:37:29Z

‎Recent Developments

Dl8rds: /* Recent Developments */

2009-12-23T02:36:45Z

‎Recent Developments

Dl8rds: /* Boot Architecture */

2009-12-23T02:36:12Z

‎Boot Architecture

Dl8rds: /* Echolink */

2009-12-07T13:48:48Z

‎Echolink

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 [[image:echolinkserver-CPU-Board.jpg|400px]] [[image:echolinkserver-platte.jpg|400px]]
-The lower right picture shows the hard disk cage from inside. The striped PCB covers a Cosel DC-DC-converter from 12V to 5V. Since I do not expect to receive an exact voltage of 12V according to the ATX specification here, I am operating two 78S12CV in parallel, which are soldered right onto the drawer, but which are invisible because they are under the Cosel board.
+The lower right picture shows the hard disk cage from inside. The striped PCB covers a Cosel [[DC-DC-converter]] from 12V to 5V. Since I do not expect to receive an exact voltage of 12V according to the ATX specification here, I am operating two 78S12CV in parallel, which are soldered right onto the drawer, but which are invisible because they are under the Cosel board.
 As said, things evolve, and Spectra has sent me a heat sink, because the little board does indeed generate some heat. After the insight that the sink must not reside just on the PCB, but that there must be some circulation below, I understood that the SDIO graphics board will no longer fit in. Either I would have a computer without VGA or a computer box with VGA but without one of the boards on the above photographs.
@@ Zeile 92: / Zeile 92: @@
 ==== Boot Architecture ====
 I managed to get Ubuntu Hardy 8.04 running and booting from my flash disk. It's a 8 GB flash disk that should provide enough space to home all sorts of data. Today (26.06.2009) I also purchased a 1,5 Terabytes hard disk that will serve as storage. Once the operating system is really really complete and there's nothing that needs to be added, I will create a real read only boot system based on something like [http://www.filesystems.org/project-unionfs.html UnionFS]. It's like those bootable KNOPPIX CDs.
 === Video Receiver Unit ===

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 * 2010-06-28 I decided to place a backdoor GSM dialin system into that tray which has been empty for the described reasons:
 ** [[PPP over GSM slowspeed backdoor to my Echolink node]]
 == Software ==

@@ Zeile 157: / Zeile 157: @@
 ** c) I have now purchased a Synology NAS which will provide enough disk space for any future storage problem.
 * 2010-06-28 I decided to place a backdoor GSM dialin system into that tray which has been empty for the described reasons:
-** [[SMS Gateway with an Arduino, the Ethernet shield and the GSM Playground shield]]
+** [[PPP over GSM slowspeed backdoor to my Echolink node]]
 == Software ==

@@ Zeile 156: / Zeile 156: @@
 ** b) I have seen that the ATX specifications are extremely narrow and leave little room for under / overvoltages. In other words: I ruined a hard drive.
 ** c) I have now purchased a Synology NAS which will provide enough disk space for any future storage problem.
-* 2010-06-28 I decided to place a backdoor GSM dialin system into that tray which has been empty for the described reasons: [[SMS Gateway with an Arduino, the Ethernet shield and the GSM Playground shield]]
+* 2010-06-28 I decided to place a backdoor GSM dialin system into that tray which has been empty for the described reasons:
 == Software ==

@@ Zeile 156: / Zeile 156: @@
 ** b) I have seen that the ATX specifications are extremely narrow and leave little room for under / overvoltages. In other words: I ruined a hard drive.
 ** c) I have now purchased a Synology NAS which will provide enough disk space for any future storage problem.
 == Software ==

← Nächstältere Version		Version vom 23. Dezember 2009, 02:37 Uhr
Zeile 150:		Zeile 150:

	In the near future I will add a fuse to the connection between accu and battery guard and perhaps also a temperature fuse. I still don't know for which current the temp fuse is rated, because the legs of the device are not tremendously thick. But I am sure to find out :-) Let it be by experiment...		In the near future I will add a fuse to the connection between accu and battery guard and perhaps also a temperature fuse. I still don't know for which current the temp fuse is rated, because the legs of the device are not tremendously thick. But I am sure to find out :-) Let it be by experiment...
		+
		+	=== Recent Developments ===
		+	* 2009-11-10 I decided not to use the hard disk in the bottom drawer but to leave it empty. The reason is that
		+	** a) the device itself should consume as little power as possible in order to reduce heat to a minimum
		+	** b) I have seen that the ATX specifications are extremely narrow and leave little room for under / overvoltages. In other words: I ruined a hard drive.
		+	** c) I have now purchased a Synology NAS which will provide enough disk space for any future storage problem.

	== Software ==		== Software ==

@@ Zeile 93: / Zeile 93: @@
 I managed to get Ubuntu Hardy 8.04 running and booting from my flash disk. It's a 8 GB flash disk that should provide enough space to home all sorts of data. Today (26.06.2009) I also purchased a 1,5 Terabytes hard disk that will serve as storage. Once the operating system is really really complete and there's nothing that needs to be added, I will create a real read only boot system based on something like [http://www.filesystems.org/project-unionfs.html UnionFS]. It's like those bootable KNOPPIX CDs.
-==== Recent Developments ====
+=== Recent Developments ===
 * 2009-11-10 I decided not to use the hard disk in the bottom drawer but to leave it empty. The reason is that
 ** a) the device itself should consume as little power as possible in order to reduce heat to a minimum

@@ Zeile 343: / Zeile 343: @@
 * If you want to check if the node is registered and "on", have a look there: Search for "DL8RDS-L" http://www.echolink.org/logins.asp
 * 2009-07-20 Today I was able to verify that the transceiver control basically works: Whenever I connect and the welcome message comes up, and when I click the space bar / PTT switch on my keyboard, the PTT and KEY LEDs come up. So basically, the PTT switching should be OK.
-* 2009-08-25: My License assignment document has arrived! Drom now on, I am officially permitted to operate DB0BUL-L as an Echolink Link server on 144.975. Have a look here: http://www.echolink.org/logins.asp Yet, the radio is not connected to the computer, but the logon procedures should already work.
+* 2009-08-25: My License assignment document has arrived! From now on, I am officially permitted to operate DB0BUL-L as an Echolink Link server on 144.975. Have a look here: http://www.echolink.org/logins.asp Yet, the radio is not connected to the computer, but the logon procedures should already work.