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led display module

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led display module 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.
  • 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 $$.
  • Good starter kit

    posted by 8136821

    Good quality PCB and all necessary components are supplied to build this. Very easy to put together and worked first time connected to my Arduino.
    Please make just the PCB available for those that want to supply their own parts. Maybe consider a smaller PCB footprint that is just as big as the display with connectors as discussed above
    Good product at a good price.
  • Nice 4 digit display.

    posted by DrJFM

    Only takes 2 wires to use. Mine was a Catalex as shown. Had seen some complaints about these devices from various sources, but no problems with this one.Used: http://www.seeedstudio.com/wiki/Grove_-_4-Digit_Display for trial sketchs and nice timer routine too.
    Surprised how accurate a clock you get with just the UNO crystal and no correction. Wanted to do something each day at a time +/- a couple of min.If I have to adjust the "clock" once a week, no big deal.
    Ordered a couple more! Will try w ATTiny.
  • Cool electronic clock

    posted by madmax1981

    It is a cool electronic clock, it look's very nice on the desk. It came packed in bubble foil. It has temperature sensor and it can display the temperature wich is very usefull. It has 4 display modes: only clock, only date, only temperature and alternate. The temperature is not very accurate, but if you have a accurate termometer you can correct the error because the module has that function. Also has the correction function for the clock too.
    This is a cool clock with bright led's.

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