Setting up a 70cm AX25 based IP link: Unterschied zwischen den Versionen
Dl8rds (Diskussion | Beiträge) (New page: The goal of this project is to try out AX25 based IP networking, with the special challenge that the computing endpoints must be very efficient on power consumption. Since I have made good...) |
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Version vom 26. Dezember 2008, 15:25 Uhr
The goal of this project is to try out AX25 based IP networking, with the special challenge that the computing endpoints must be very efficient on power consumption. Since I have made good experiences with using ASUS WL-500gP routers operating OpenWRT, this IP link should be based on the same hardware.
Inhaltsverzeichnis
1 Hardware
1.1 DL8RDS side
- ASUS WL-500gP
- TNC2Multi
- (Transceiver still unclear)
1.2 DB0MHB side
- ASUS WL-500gP
- TNC2H
- T7F, 70cm highspeed data transceiver
2 Project phases
2.1 Building suitable cases
In my first attempt to work with ASUS WL-500gP hardware, unfortunately USB connections were destroyed due to excessive soldering temperature. Damn it, the PCB leads are so thin meanwhile, you can't really work with a normal 15 watts soldering iron any more. Since the router at DB0MHB is meant to steer some other radio devices over USB connections, I decided to invest some money in a new board and use the old board with the single USB socket on my side where I won't need to control any special radio hardware.
But given that I have consistent experience with PCB based case building in the meantime, the case for the new router is not so much of a challenge any more. The bigger challenge is to build a case for the T7F. I bought it just as a kit, which means that the core device is just contained in a little box with some pins coming out on the front side. On the pins you would plug the user interface, which again is just an open PCB board with a LCD display and a rotating switch mounted on it. As everything should go into a 15cmx10cmx5cm case and the user interface in front, I was to decide how to mount everything together. A short glance in my computer components assembly box told me that the little spacer mounting screws for mainboards are perfectly siuted to construct a fixing apparatus for the interface board. Here's a picture: