IrDA DIY. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / infrared technology
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Like it or not, infrared devices are becoming more and more dense in our lives. However, there is one paradox .... Cellular with infrared ports and other devices are becoming more and more, but the infrared ports themselves somehow do not arrive .... For example, in my city only high-glitch graters are sold at 600-800 rubles .... Agree that the fee for a buggy, albeit a beautiful box is too big!
Therefore, we quickly take a soldering iron and warm it up, but I will continue for now .... Actually, if you look around the forums, you will see a lot of exclamations about the buggy of terkams .... Then it is determined, but does not cling to the tube, then something else. ... In general, there is a lot of torment with them and I would not recommend you buy them ...
And the way out of this situation is quite simple. IRDA of 6 parts is presented to your attention!
For assembly we need:
1) Infrared asynchronous transceiver TFDS4500;
2) Capacities: 10uF* 25V, polar and 0,1 uF;
3) Resistance: 47 ohm (yellow, purple, black, gold) and 14 ohm (brown, yellow, black, gold) or instead 14 ohm put two in parallel 27 ohm (red, purple, black, gold). In brackets, as you probably guessed, the color marking is given.
Next, we collect everything according to the following scheme:
When assembled, our IK looks like this:
Let's go further....
This truly miracle of engineering is connected to the IRDA port of your motherboard .... It is located ... Open your book on the mat. pay, but look, I’m not still tormented ...
When connecting, do not mix up the contacts!
Setting .... Everything is a little more complicated here, since the port is configured differently on different mothers.
And I will tell you the general methods of setting.
1) We look at how to properly include it in the motherboard without confusing the contacts.
2) We climb into the BIOS: "Chipset Features Setup" -> "UART2 Use Infrared" -> "Enabled", then into "Integrated Peripherals" and set Uart Mode, Duplex Select, TxD and RxD.
3) We reboot, holding the port with our fingers. If the TDFS4500 gets hot, change the settings.
Author: ScrewDriver; Publication: cxem.net
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