DIY IR interface
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjG-KFvCu4FksIEfFqsTsW4xoDcny_aPMMBI1IPfSr7byH_NSLs8IIl3nfX4EP4gYEkU60Yl69f4_Ah5Pkj4JWcXreQHnOOKU9-zEgMGNycb84dMUy_d4ONo2qPu2OkWKhfEns6Jw/s200/irda_circuit.gif)
This circuit is also from www.electronics-lab.com. Since it is very hard for me to get the infrared interface (TFDU4100), I start to look in the old/damage handphones. It looks something like this.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhMiwgSVNZ0FBBbXOn3sPXOstVSuFjP16EMVY1hWWpLKoC90Rrb4uXduk12hw1MgYd7NuRTfWrWnduMdZWPyL4KmzJ1hCVwrqMCeTqZyasbMdX_Qb8SqQGMQEM4j-5XTEl0FeGXFQ/s200/ir_module_8850.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjqWpzZ6T4P_xPteQGKRfaQ1UvEzPQsAX9AGtmWQ8wWJIzJB3Xfj2mXBcceABkRXt-a3EPoqAnGfAf7WWgtnlJxBqPVUKj9NnfMkt9ip9YA8DPlMUe4Gg4t5tUxbFmX0PCK6BUrjg/s200/ir_module_6600.jpg)
Now, you need to remove it using the hot air blower perhaps.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhdCr2gVrfB8o2l_jPVy-rCT53qDaGu_N3gmHCqgDu0Mbg_Y2V41RwGocM920DqVK9IPt5f4vHCV91TmUO1v8jXrrC80QgnNIuTpj2vIOCM1ifWiiSyt4tik8SYBCQ5ageRXq2wDQ/s200/smd_rework.jpg)
Connecting to motherboard
Please refer to www.electronics-lab.com on how connect this irda module to your motherboard.My IrDA
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj9duEz-8vGVBVFQHhmsz7-doAzhzhuAbLYKS2iFpYaGoLwVyaqylCqmtSXVxxXsYjnng0RatWR6e3pcXTu0PBcL1clegVKd7ZzXk6nMl3ptTCUAk2PS1OiDG7kT-dZawA9o8X9GQ/s200/my_irda_1.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj6fDgjlcpDu7EAWQtNzPSiTnwIyUuswyZ962ZcW_8ROLPYhfl4I1hlrgFSwFWO35ATM20HocDPryytSUZZfctEFgEV35TJAxX32_RN0ZglU4Wk3DCBQpQJAiEt68iXOCgT6Y2EPw/s200/my_irda_2.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEihGf8U1omLfghNWjJf8BfbjmMU-UVtuQ5hf2BAp8pp_i39IxbKa2vdpCqkbGY7Ji72KGXEYYNmxbmK6XzBfPsRxcHG5tsBDgFVZHMcrRhniKXxPKoo97OBCvv2JMD5PgLuXdRfYw/s200/my_irda_3.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjJkfReJsoz-Tts61WHQMM-fBKxMu-RZW4E601x1ObMZEP4igTtOQyPeZCoKPk_bxfMmw96CdsTCAePWGcDuynJDyF-bHBph8wydx-1RsCm0cCw0kKwuS7_Ta5JhIWIkFxZ1sTa9w/s200/connecting.jpg)
Infrared Transceiver Modules
Here are the pin layout and picture of the device.![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhqZdSNnmi1Lq_xmHX_XnTOpBv6kQF7cqkpExR1ETiP0HoN67UugfWY3MFKYPDpujph7eP8LFWy_Q_I7Mq04pOHLqRpM4prjXJ2I2QlFfo2NlX6hH8hKVGe1Cb9oese7DU-5dv31Q/s200/TFDU4100_1.gif)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEnNEiODWPuXkl5Ly4OsjpyMZyErFQL9kPEpe_TQydt7V8z7B0ZZisVv0NxQep-QVUG0EIKlzdht8ROE_AUw-TdZD92uHFlwAUA34O7Pi65LlHFDfltJd6AUi1bJW5uaPE24NPYA/s200/TFDU4100_2.gif)
Pin Description of TFDU4100
Pin Number | Function | Description | I/O | Active |
---|---|---|---|---|
1 | IRED Anode | IRED anode, should be externally connected to VCC2 through a current control resistor | ||
2 | IRED Cathode | IRED cathode, internally connected to driver transistor | ||
3 | Txd | Transmit Data Input | 1 | High |
4 | Rxd | Received Data Output, open collector. No external pull–up or pull–down resistor is required (20 k. resistor internal to device). Pin is inactive during transmission. | 0 | Low |
5 | NC | Do not connect | ||
6 | VCC1/SD | Supply Voltage / Shutdown | ||
7 | SC | Sensitivity control | 1 | High |
8 | GND | Ground |
1 comments :
This is an excellent job, but I have some troubles in doing the same thing. Is it possible to connect the TFDU4100 with a USB-TTL convertor?
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