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  • April-16 2016 07:01:15

    I wasn't a fan of the code I found for it so decided to write my own Ardunio library. Writing your own library is the best way to understanding how it works. I have posted information and the code here. https://monotok.org/arduino-using-c-to-write-7-segment-4-bit-display-driver/

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  • February-19 2020 15:57:13

    After a long wait I received 2 dead modules, wish they would let me give zer0 stars!

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  • August-03 2015 02:43:16

    Send 16-bit word serial messages for the two 74hc595 controllers. High byte = segments ".gfedcba" active low. Lowest 4 bits of low byte selects digit(s) to display. High 4 bits = don't care Send bit 15 first, bit 0 last. Clock each data bit on DIO with a positive SCLK edge. After 16 bits are clocked in, latch with a positive edge on RCLK. If daisy-chaining, 16 bits per module, then RCLK edge. Proceed to next digit. Look at avg 5ms per digit or less, to give a steady display. RCLK and SCLK only

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  • July-01 2015 20:26:17

    This was easy enough to get working with the code posted in other reviews, but that code needed some tweaking and lacked a function to print 4-digit decimal values (the original only had one for hex). I went ahead and made the edits necessary to get up and running a little quicker.. https://goo.gl/nYzghE Cheers!

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  • June-06 2015 14:48:43

    Super utile dans de nombreux projets nécessitant un afficheur 7 segment comme un voltmètre ou un ampèremètre !!! Le rapport qualité/prix est excellent. Si vous trouvez moins cher, contactez moi ;) Just so AMAZING EDIT: Update link with sketch demo code for Arduino Uno - http://www.vcc2gnd.com/2014/08/8-digit-numeric-display-module-with_4.html Thanks for this code & for the blog post

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  • March-17 2015 21:55:00

    This tube works well. A good base point for Arduino Code is http://p.vcc2gnd.com/8d7s. However, to make it work, you need to: 1. reverse the order of the shift registers in the "update2x595" function. 2. change "byte dMask = 128" to "byte dMask = 1" in the d8_hex function. 3. change "dMask >>= 1" to "dMask <<= 1" in the d8_hex function.

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  • July-24 2016 03:29:31

    A very nice product, coming with the jumpers. Perfect. For a better code, you will find it at https://github.com/kostarev/TM74HC595-4dig-display/archive/master.zip

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  • June-02 2016 11:51:16

    Nice but small lcd, but conform to the description. the component is working but I have some difficulty to write a SW in arduino to manage it.

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  • March-07 2019 06:51:04

    Nice little 4x seven segment led board, useful for projects such as time or temperature display.

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  • February-13 2017 09:10:23

    This is so much easier to use and wire than the standard 3461BS. Comes in handy on so many projects.

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