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led matrix display Customers Reviews

  • OK

    posted by sparkyrobot

    All the LED's work, except for one row. I think this was caused by my experimenting while trying to find the pin layout. The product was probably fine. Luckily I do not need all 8 rows for my project. I intend to use this for a 2 digit display.
    I received a 16pin version.By testing I found that it was connected in the following way:Rows (+): pins 6, 2, 7, 1, 12, 8, 14, 9Cols (-): pins 16, 15, 11, 5, 10, 4, 3, 13The bottom text says:pin--45.72--0.8NL23881A
    I would but one of these again if I needed it.
  • Good LED array

    posted by zqad

    Cheap, complete, reasonably designed
    I cleaned up the pinout diagram a bit and used the only marker I saw on the backside as an orientation guide:http://pdf.thepdfportal.com/?id=169458
    Would buy more if I had the time and energy to build a large-size LED display.If you will buy, remember to check out the alternative pinout diagram: http://pdf.thepdfportal.com/?id=169458
  • Cool Watch!!!!

    posted by Hudka

    This watch looks really cool. It´s kind of big but very confortable. All my friends ask me to take a look at it, and everybody likes it. I like the purple and white color. At night, you can perfectly see the time, it even helps me some times, when my room or car is to dark, it works like a flashlight.
    Some days ago I found out that if you keep the light button pressed, the light color is going to change... it becomes red, green, pink and blue, so you can choose wich one you like the most.
    It´s a nice choice if you like to look different, wearing cool stuff... and have your friends and a bunch of people looking at your arm
  • Good for Arduino beginers

    posted by Nick17200

    I bought this kit for experimenting with my students.Works on SPI and is very easy to order with an Arduino Uno.The PCB Board is marked and that makes the components to be easy mounted.The device works from the first try if it's built properly.
    Perhaps it would be useful to make a PCB Led array, and the headers have the mother out of the PCB, to be able to interconnect with other PCB
    It can be used to commercials light !
  • versatile but no manual

    posted by daggett1

    It's functioning as a spectrometer when you power it : 2 buttons for changing color and line-mode, 2 has no apparent effect.The controller is 80C51 compatible, and there is a serial connector, so it's time for hacking !
    It must be powered with 1A, there are several chips on it : a 12C5A32 microcontroller, a DS1302Z serial RTC, a infrared receiver VS1838, 2quartz 30MHz & 32.768kHz, 2 74HC245D bus transceivers, a lithium cell, a PowerOn LED, 1 large 10V 470uF capa, 1 soldered 16pins connector + 2 unsoldered to drive 16x64 displays, 1serial connector (RX/TX), 1 4-pin connector (VCC,DAT,ND,GND).
    So I think this will be a good board for hacking. I bought that instead of the bare LED 16x64 screen because of the microcontroller board for only a few more $$.

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