Banggood

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/

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

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

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!

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

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.

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

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.

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

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