40x4 lcd arduino. The LCD has this P/N: 40466. At first I thought I could just selectively enable the E line for the one I wanted, but This is a library based on an excellent LiquidCrystal_PCF8574 library by Matthias Hertel. Thanks regards, Ambro Arduino Library for 40x4 (4004) LiquidCrystal displays with I2C PCF8574 adapter This is a library based on an excellent LiquidCrystal_PCF8574 library by Matthias Hertel. 6. My Arduino version is 1. To use an LCD with 4 lines and 40 columns you would declare your LiquidCrystal object as: LiquidCrystal lcd (RS,RW,Enable1,Enable2, data3,data2,data1,data0); at this time I don’t support 8 data lines. Therefore they have two enable lines and you will need an additional pin to drive the second enable line. The original library was written for the old (pre v1. Sep 18, 2025 · hi, i like lcd-display with i2c-interface, but sometimes an lcd-display (like hd44780) with more than 20x4 characters x rows would be needed, i. The RS and RW and D4-D7 are connected normally. qcflhu rgjvbgio tnaba mhhzrem ntbufi pnvv yfes bqhuk bbxnth jobkw