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16x2 LCD (Liquid Crystal Display)

16x2 LCD (Liquid Crystal Display)

$12.50
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Front of the 128x64 display module

128x64 OLED Display Yel/Blu

$17.95
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USB 2.0 Cable 10 Foot Type A Male to Type B Male

USB 2.0 Cable Type A Male to Type B Male - 10 FT

$4.80
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Multimeter Security Banana Plug To Test Hook Clip Probe Lead Cable 500V

Multimeter Security Banana Plug To Test Hook Clip Probe Lead Cable 500V

$8.99
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3 Foot USB Cable Type A to USB Cable Type A

USB Cable Type A Male to USB Type A Male - 3 FT

$2.65
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Tumbnail: 62 oz-in NEMA 17 Stepping motors (also called stepper motor)

NEMA 17 Stepping Motor (62 oz-in 5mm single shaft)

$19.95
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Image of the Atmega324p

Atmega324P

$8.50
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10K timmer potentiometer

10K Trimmer Potentiometer (Through Hole)

$0.85
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White prototyping breadboard with 30 tie strips and two power rails on each side.

White Prototyping Breadboard (2x30 columns of tie strips and 2x2 rows of power strips)

$7.95
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On Paper: Converting a Number to a String for Display on LCD

To be able to send a number as a string to the LCD that comes from a variable, a function must be used to convert the number to a string. Two functions are available for this: itoa and dtostrf. Itoa is for integer conversion to string. Dtostrf is for converting double precision numbers to string.

The functions syntax:
itoa(value, character array, base);
dtostrf(value, width, precision, character array);

- value is the variable that contains the number
- character array is the output string
- base - binary - 2, decimal - 10, hexadecimal - 16
- width - the length of the final string including the sign. (i.e. -123.45 would be 7)
- Precision if the number of digits after the decimal.

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