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display module

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display module Customers Reviews

  • Nice voltmeter

    posted by elomy2010

    Extremely useful gadget, especialy at winter. Well built, good quality and refresh rate. Very bright - can see the values even on sunny day. Very helpful if you have an old car
    Very good value for money, the device works well, the readings are very accurate and the power consumption is very low. The device could be connected to a car batterie for months without noticable drain the battery.
    Even easy to calibrate whit the preset behind.
  • a good product.

    posted by JakoMeister

    it is the cheapest Mini 8 x 8 Red LED Display i have found. Other products similar like this costs at least 10 dollars. It is easy to use with your DIY projects with arduino or raspberry pi (or another). It works fine. A good product with a great price.
    So you need a lot of wires to plug all the pins, i suggest you, to use a controller like the mcp23017 or something similar like this (with a only mcp23017 you can use both Mini 8 x 8 Red LED Display at the same time).
    none.
  • Nice and simple Voltmeter

    posted by wurstsemel

    - cheap- works even at lower voltage (3.0 Volts) - but maybe not exactly- no additonal power source needed- bright for daylight usage- small- easy installation - just connect the red and black cable to positive and negative DC
    Perfect for DIY power supplies and car battery monitoring.
    Would buy again. Good.
  • Good kit !

    posted by Yoruk1672

    Its a very good kit to learn how to use a LED dot matrix display. Easy to sold, thanks to the users pictures. Also easy to use with the Arduino card. A lot of example programs are on the web, and its easy to create your own. The matrix and the MAX chip are on sockets, so you can't burn them during the soldering !
    N/A.
    Buy this kit if you want to discover the matrix leds technology and if you are a DIY fan !
  • 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.

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