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  • A SMD MAX232 on a tiny board

    posted bypcmihnea on 02/27/2014

    As the title states, it's just an MAX232 package with the necessary capacitor on a small board the size of a coin. Useful for 2 lines (TX and RX) only. Easy to connect and use. Does not include a voltage regulator or any other sort of protection!... Read more

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  • Mandatory sensor for robotics projects

    posted bypcmihnea on 12/06/2013

    It's quite good that it's not based on special protocols like I2C or SPI, but standard TTL signals in a certain order: it has 2 power pins (GND and VCC), one input (Trigger) and one output (Echo). The sensibility, accuracy and resolution allows it... Read more

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  • Cheapest Arduino-compatible board on DX!

    posted bypcmihnea on 12/06/2013

    As the title states, it is the cheapest one I could find. It has only the basic, minimal components required to work properly. Thus, you would need an TTL-compliant serial programmer (or an RS232-to-TTL), because the standard computer serial port... Read more

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  • A tad smelly, but usefull

    posted bypcmihnea on 12/06/2013

    It's a 10-colored, 40-wire ribbon cable with duPont terminal at each end, making it a useful connector between different boards. It's easier (and maybe cheaper) to buy them than to buy the cable, metal connectors, plastic shield and possibly a to... Read more

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  • Interesting addition to my microcontroller sensors!

    posted bypcmihnea on 12/06/2013

    It's a smart triple axis digital accelerometer based on Freescale's MMA7660FC IC. It has a great output interface (I2C), so it's economical on pin count (2 data + 2 power). The accuracy is decent, depending on your application, but for small, The... Read more

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  • Unique gadget for my smartphone

    posted bypcmihnea on 12/06/2013

    Unfortunately, NFC technology is still unavailable to the masses (due to it's limited use only on higher-end smartphones), so few even are aware of the workings of such smart tag. Nonetheless, it's impressive when explained the principles of and a... Read more

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  • My RPi looks better in this!

    posted bypcmihnea on 12/06/2013

    I've come to the point were I'm using my RPi permanently in a single environment (RDP client, USB server, c compiler, etc.), and I needed an enclosure that make's all the ports accessible. So I bought this and don't regret it. It is a very useful... Read more

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  • Just a bunch of resistors.

    posted bypcmihnea on 12/06/2013

    It's a pack of low power, decent accuracy resistors. Diverse selection of resistive value (if the value required isn't available, it can be obtained by different combination of parallel and serial connections). It may prove to be useful for (that... Read more

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  • Cheapest SD card module on DX.

    posted bypcmihnea on 12/06/2013

    The principle of an SD card module couldn't be more trivial: it has an SD card socket's pins connected by resistors to the module pins (except the power pins, which has an 5V to 3.3V voltage stabilizer onboard, which can be bypassed by powering to... Read more

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  • Non-standard headers

    posted bypcmihnea on 12/06/2013

    I've searched for a 2.0mm pitch (compared to standard 2.54mm) header for some time. I needed them for my mini-ITX motherboard's USB connectors, which were not the standard one. There isn't much to say, you can cut them to size (losing one row of... Read more

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