Guide to Hacking the OSD: Hardware Setup

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Hardware Setup

Note that there is no need to have the OSD powered up for these steps. It's probably better for it to be off.


OSD Ser. Cable, Null Modem Adptr. & USB adapter

Connecting the Serial Cable

To connect the serial cable to your computer, you'll need the following:

  • the headphone-plug to DE-9 cable that comes with the OSD;
  • an available serial port on your computer (including USB serial adaptors); and
  • male vs. femaleA male connector has pins (little pieces of metal sticking out); a female connector has receptacles for those pins. The male connector's pins insert into the female connector's receptacles (surely you can come up with an easy way to remember this!)either a null-modem cable or a null-modem adaptor. Both ends should be DE-9 female. Don't worry if you've never heard of DE-9 before; you've surely seen one (and you may know of it by the incorrect name "DB-9"). The link provides a picture of a DE-9 male connector.
    • NOTE. The OSD beta units sold through thinkgeek.com come with a null modem adapter included in the box. The production (black units) do not include a null modem adapter. The thinkgeek units also do not come with the USB serial adaptor.
    • NOTE. You may also choose to use a null modem cable. If you do not already own a null modem cable you may choose to rewire a standard serial cable. All you need to do is cross the red and white wires, so that one side's white is soldered to the other's red, and vice versa. Use electrical tape to isolate both connections, then resolder the copper braiding (ground). More comprehensive information may be found Here
  1. Connect the headphone-plug end of the OSD cable to the serial port on the OSD. The serial port is to the immediate right of the power adaptor port.
  2. Connect the DE-9 end of the OSD cable to one end of the null-modem cable/adaptor.
  3. Connect the other end of the null-modem cable/adaptor to your serial port or USB serial adaptor.

That's it for the hardware side of the serial connection.

Connecting the Ethernet Cable

"non-preferred" connection between OSD/Laptop

Thankfully, the OSD has a auto-MDI/MDIX (auto-crossover) ethernet port, so you don't need to worry about which type of Ethernet cable to use. There are two potential configurations covered by this guide:

  • Preferred. Connect the OSD to an Ethernet switch (or hub) on your LAN. Please note that by default the OSD boots with the IP address 192.168.1.100; if you already have a host with this IP address, wait until later to connect the Ethernet (after we've configured it to use DHCP).
  • Connect the OSD to an ethernet port on your laptop or other computer. With a laptop, this method is great for giving demos.

Do not worry if the link light does not come on; it may not come on until the software enables the Ethernet port.

Connecting the TV

Finally, use the supplied headphone-plug to RCA plugs cable to connect your OSD to the TV. If you're looking at the back of the OSD (so that the power adaptor plug is on the left), the TV out port is the second from the right.

You can also have a very comfortable setup if you install a tv tuner card in your PC. This allows you to have everything on your monitor. Is saves space on your desk and doesn't force you to keep switching focus between two different screens.

Just connect the RCA to the tuner input and the audio output of the card to the audio in of your soundcard (or directly to speakers). tvtime or kdetv are good choices for viewing the video output of the card, but there are several other alternatives.

Developers Remote Setup

If your clear backing OSD Dev kit remote stops working try this!

1. press and hold 'set' button, then press 'ntsc/pal', release both of them when led turns on
2. click button 0 6 4 sequentially, led will turn off after button 4 is pressed


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