The segments are labeled A to G and some displays also have a dot (the 8th LED). Two pins are required for the power connections and the other two pins are used to control the segments.ħ-segment displays contain 7 (or 8) individually addressable LEDs. Thanks to the TM1637 IC mounted on the back of the display module, this number can be reduced to just four. That’s quite a lot and doesn’t leave much room for other sensors or modules. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to products on .īare 4-digit 7-segment displays usually require 12 connection pins. How to use a 16×2 character LCD with ArduinoĪdafruit DS3231 Precision RTC Breakout (alternative)ĭHT11 temperature and humidity sensor (3-pin).
How to control a character I2C LCD with Arduino.
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