HiLetgo 2pcs 0.36" 4-Digit Tube LED Segment Display Module Red Common Anode TM1637 Drive Chip Tube Clock Display for Arduino UNO R3

The media could not be loaded. Really simple to use 4 pins, have it plugged into an Arduino nano and I’m using it as a speedometer for racing games. Love how responsive it is.

Update: The SoftwareSerial library is interrupt driven under the covers and that causes the 1637 updates to stutter resulting in long delays doing 1637 writes. This only happens if there is serial data arriving at the moment the 1637 write is occurring. To avoid this problem put a port.end() just before your 1637 writes and a port.begin() right after them. Serial gps data arriving at 9600 baud is unaffected at least for me - I only use GPRMC messages and discard everything else anyway so some of them might be affected but I don’t see any affect at all, except all of my 1637 writes now happen in 16–20ms.Original review:The 1637 part takes about 75ms per digit to write to on a nano. That is S L O W. They’re fine for clocks but not for anything with much else going on.These go in all my temp projects, the gps test clock, the portable lux meter, the square wave clock generator, the rf24 transmitter and receiver test fixtures, etc. They’re a little small for across-the-room viewing but are 1/4th the price of the Adafruit units.

I ordered 2 of these 4 digit LED modules to display battery voltage and current on my RV. They are very easy to use with the Arduino IDE and microcontroller and look great. However they are intended to display time with a colon in between the digits and don't have any decimal points. I have ordered a set of the display modules with decimel points instead if a colon for the finished product. Great display modules but Just beware these are only for time (or integers) and won't display any decimal values.Very easy to use with the AM1637 library on github.

They’re cheap, they work as advertised.

The media could not be loaded. I was skeptical about using this display at first since the datasheet was a bad translation of Chinese to English. However, after looking over the datasheet and trying some things I was able to get the display working very well. I am able to accurately control each individual digits as well as the colon in the middle. The colon is the 'decimal point' of segment 2. I bought 6 of these since I know I will eventually use them and they work so well. I opted to use an MSP430 microcontroller to develop the controller on.

Used it on two Raspberry Pi projects. One was a Raspberry Pi 2 and the other a Zero. For one I used it as a scrolling display on a MIDI keyboard and for the other I just displayed temperature and humidity data. I used the Adafruit Python libraries to drive it in both cases. There are plenty of Python libraries available for 7 segment displays on Raspberry Pi.The displays are bright and work as expected. What else could you want?

Easiest was to setup a 7 segment 4 digit led. Download the TM1637 library and get straight to coding. Price was ok, I've seen better deals. Quality of product is up to par. Would recommend, no issues.

First, let me say that I have bought a ton of HiLetgo products, and I've been extremely happy with each and every one, until this one. While the listing didn't say I2C, just that it uses vcc, gnd, clk, and data. So the TM1637 driver does work, but it won't play with other I2C devices on the same line. Again, it was my mistake to not look into the connection, so don't blame HiLetgo for that, because I'm very happy with the company, and everything else I've purchased from them, but now you know.

great value