4-digit led display with TM1637 and Arduino

   A good and cheap display is 0.36" (9,14mm) led display drived by TM1637:

   On net I found some articles, but I liked article from http://www.arduino.md/hardware/lcd-and-leds/0-36-led-display-4-digit-red/ who use library from http://www.arduino.md/wp-content/uploads/library/TM1637-4-digit-display-tube.zip !!!

   Test schematic is very simple:

   I made few changes for can display special characters:

 after that, I put DHT11 sensor:

   Sketch for this weather station (temperature and humidity) is put at my github channel in TM1637 library !

   I made a movie named Arduino, TM1637 display & DHT11 sensor

   Original article is in roumanian language and can be find at http://nicuflorica.blogspot.ro/2016/04/afisaj-cu-4-cifre-controlate-de-tm1637.html !