It depends on the exact model of LCD you are using. Or more exactly, on the Dot Matrix Liquid Crystal Display Controller/Driver, like the Hitachi HD44780U that is used in many 16x2 LCD. For that driver, you have a table of native chars, like this: In this table, the char "°" is at col 0b1101, row 1111, (0xDF, or 223).

So when you tried lcd.print("1234 " + number) and got "34 ", what most likely happened is that you advanced the pointer, pointing to the first character of "1234 "(i.e. '1') by number (i.e. 2), thus making the pointer point to the 3rd character in the string and thus making lcd.print() display "34 ". In order to print something that contains ...

For a complete answer, we would need the datasheet of the LCD screen, but in general, LCD screens have a pin for the backlight, or two, one for plus and one for ground. In the datasheet you can find what voltage the backlight wants, and what …

I'm getting my first steps on Arduino and I'm trying to do an exercise where I have to draw a graph bar in a 16x2 LCD that indicates the values read from a vector of 16 integer elements amplified by the value read from a potentiometer (connected to the analog pin A0) during runtime.

Nov 15, 2018 · Arduino 16x2 LCD Black Boxes. 0. Arduino nokia 5110 lcd screen problem. 0. Arduino Mega LCD. 1. Arduino ...

I've installed an I2C module on my 16x2 LCD so i don't have access to all those LCD pins to control the backlight LED. BUT there is a 100 ohm smd resistor in series with anode of the backlight LED, i want to remove the resistor and use Arduino PWM to control the backlight or i can just replace that resistor with a 330 ohm or a 1K resistor.

Mar 6, 2016 · #include <LiquidCrystal.h> LiquidCrystal lcd(12, 11, 5,4,3,2); void setup() { // set up the LCD's number of columns and rows: lcd.begin(16, 2); lcd.print("hello, world!"); } void loop() { // set the cursor to column 0, line 1 // (note: line 1 is the second row, since counting begins with 0): lcd.setCursor(0, 1); // print the number of seconds ...

Mar 19, 2020 · you need to make some helper functions to cut down on the repetition and make the code easier to maintain. it looks like one to handle the plant could accept parameters of a string label and an upper bound for the map. another function should be the only way print to the lcd, from one place, i call it render(). you want the loop function to be short and to mainly call sub-routines to handle ...

Dec 2, 2015 · The only way I managed to avoid things freezing was to disconnect the CAT4101 pin 1 from Arduino's PWM and disconnect pin 2 from Arduino's 5V. What could be causing this issue? CAT4101. pin 1 = connected to Arduino PWM pin 2 = connected to +5v pin 3 = connected to ground pin 4 = connected to ground with 2kOhm resistor pin 5 = connected to LED ...

Dec 28, 2019 · Assuming You're using the same LCD library I'm using, there is a longer form of the constructor that takes pin assignments for the different pins on the I2C module, as Majenko says. I'm at work, so I don't have access to my code, but your constructor looks a whole lot like the one I use for my module, which has non-standard pin assignment.