How to use 4-digit LED TM1637 display with Arduino 

I liked the way you showed each running piece of code while running the test, good work sir, ty

You explained the lesson like a "white swan" dancing on the lake,thank you Sir...

frckin loved that you did an understandable example in the end

Best video on this display I’ve ever seen. Helped so much being able to see the code as the program was running. Thanks for so much effort into this very useful video.

My first one didn't light up and I'm stuck. Now I have a test board for those and a good app. The micro controller is like a TTL interface with GPS (taking time data out) and I could use it for the u-blox software. My Cardputer is more fancy with this and I can type through it and get a clock on that display. My little oscilloscope show that the signals are fine, so I will buy a few more TM1637 modules to see what happens.

Very good tutorial, thanks bud!!

It was so good, the video that is, that I had to subscribe. Great job man.

Hello, I could not trust most of the products, some seems like dots are available but actually not connected physically to the module. Can you suggest me a product with the decimal points, which I can drive with tm1637 ? Because I wrote my own library for raspberry pi and everything works fine except the decimal points. Some of the products work like a timing module even though they have decimal segments.

Thanks for the tutorial. Even after two years since this tutorial, there's still no definitive reference I can find on TM1637 on Arduino, and this video is about the only piece that shows the placement of decimal point. However, I'm still struggling with formatting floating point numbers with specific decimal point placement. For instance, how would you write the parameters to display four digit number with one of them after the DP? e.g. displaying a variable named data with a value of 123.4?

Very good explanation

So I ordered two of these, and not from Alixpress as I did not want to wait 1-6 months for delivery. First one i got, I realized after does not have decimals between the numbers. I had to remove the in your code for the display to show numbers correctly. The other one does have decimals, and is similar to the larger one you have here, even with similar markings. Not only is it not displaying decimals, it is only showing a single 0. Advice on that?

How to make the display show the variable. Im making a distance measuring system and I want to display the output number to this type of displays. Plz help

Çox sağ olun. Mənə InşəAllah kömək etdi.

sir i am layman since age 33,now i am 43 but you are Gineous

can i change the 7 segment to 2.3 inch seven segment with 7Volt Supply?

Very nicer thank you.

How to display numbers with commas? For example 27.30.

amazing

on the code compiler it says- has no member "clear"

Dobra robota, filmik mi bardzo pomógł, szkoda że nie robisz drugiej wersji po polsku.

How can we use this module with micro c?

Nice!

I want to control tm1638 without library.. is it possible. If yes then pls make a video or give me link where to get tutorial. Thank u in advance

How did you fix dot issue?

THANKS

Can u help me

nice video! can u make a video a countdown timer if there is a input signal ex. sensor and give time to countdown. thanks.....

your video is amazingg sirrrr, goodjob can this tm1637 do the running text? if that possible can you show me the code :D

is all alphabets displayable .especially z,k,m,r,t,w,x,

If anyone is interested, here is my test code for this display to work without any library. #define CLK 2 #define DIO 3 /* * 0 - * 5 | | 1 * 6 - 7 : only at 2nd register * 4 | | 2 * 3 - * */ #define chA 0b01110111 #define chH 0b01110110 #define chO 0b00111111 #define chJ 0b00011110 #define chBlank 0 const byte nums[] = {0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07, 0x7F, 0x6F}; byte bfr[5]; void setup() { Serial.begin(57600); pinMode(CLK, OUTPUT); // CLK pinMode(DIO, OUTPUT); // DIO digitalWrite(DIO, HIGH); digitalWrite(CLK, HIGH); } void loop() { SetBrightness(0); WriteLCD(chA, chH, chO, chJ, false); delay(2000); SetBrightness(2); WriteLCD(nums[0], nums[1], nums[2], nums[3], false); delay(2000); SetBrightness(4); WriteLCD(nums[4], nums[5], nums[6], nums[7], true); delay(2000); SetBrightness(6); WriteLCD(chBlank, nums[8], nums[9], chBlank, false); delay(2000); } void SetBrightness(byte level) // value 0 .. 7; { bfr[0] = 0b10001000 | (level & 0x07); // Display ON + jas SendMsg(1); } void WriteLCD(byte D0, byte D1, byte D2, byte D3, bool colon) { bfr[0] = 0b01000000; // command: write data to display SendMsg(1); bfr[0] = 0b11000000; // command: address C0H bfr[1] = D0; bfr[2] = D1 | (colon ? 0x80 : 0); bfr[3] = D2; bfr[4] = D3; SendMsg(5); } void SendMsg(byte byteCount) { int tmpBfr = 0; pinMode(DIO, OUTPUT); digitalWrite(DIO, LOW); // start digitalWrite(CLK, LOW); // clk ready for (int i = 0; i> 1; } digitalWrite(DIO, LOW); pinMode(DIO, INPUT); // waiting for ACK digitalWrite(CLK, HIGH); // test for LOW - not implemented digitalWrite(CLK, LOW); } pinMode(DIO, OUTPUT); digitalWrite(CLK, HIGH); // clk ready digitalWrite(DIO, HIGH); // end }