lc.setRow(0,1,B00110111); // H
lc.setRow(0,2,B01001111); // E
lc.setRow(0,3,B00001110); // L
lc.setRow(0,4,B00001110); // L
lc.setRow(0,5,B01111110); // O
OK how do I figure out the system for creating letters and numbers for display.The B01111110 stuff I am baffled with.Thanks
An array perhaps.
These are random values, you will need to write the letters yourself.
byte C[] = {
B00110111,
B01001111,
B00001110,
B01111110,
. . .
B11011010
};
// rest of code
lc.setRow(0,1,C[0]); // H
lc.setRow(0,2,C[1]); // E
lc.setRow(0,3,C[2]); // L
lc.setRow(0,4,C[2]); // L
lc.setRow(0,5,C[3]); // O
You should maybe look into premade font files as well as print functions. this way you can just type a string and see it on the display instead of going character by character manually
You forgot to tell us what kind of display you are using, and what (if any) library you are using to control it.
If you want us to tell you how to make something work, we need to have a good idea what that "something" is.
He is using the LedControl library for a dot matrix display.
This is a font contained in the PiLite library
// 5 x 7 font
// 1 pixel space at left and bottom
// index = ASCII - 32
#include <avr/pgmspace.h>
//***** Small fonts (5x7) **********
static const unsigned char smallFont[][7] PROGMEM =
{
{0x00, 0x00, 0x00, 0x00, 0x00 , 0x00, 6} , // sp
{0x00, 0x00, 0x2f, 0x00, 0x00 , 0x00, 6} , // !
{0x00, 0x07, 0x00, 0x07, 0x00 , 0x00, 6} , // "
{0x14, 0x7f, 0x14, 0x7f, 0x14 , 0x00, 6} , // #
{0x24, 0x2a, 0x7f, 0x2a, 0x12 , 0x00, 6} , // $
{0xc4, 0xc8, 0x10, 0x26, 0x46 , 0x00, 6} , // %
{0x36, 0x49, 0x55, 0x22, 0x50 , 0x00, 6} , // &
{0x00, 0x05, 0x03, 0x00, 0x00 , 0x00, 6} , // '
{0x00, 0x1c, 0x22, 0x41, 0x00 , 0x00, 6} , // (
{0x00, 0x41, 0x22, 0x1c, 0x00 , 0x00, 6} , // )
{0x14, 0x08, 0x3E, 0x08, 0x14 , 0x00, 6} , // *
{0x08, 0x08, 0x3E, 0x08, 0x08 , 0x00, 6} , // +
{0x00, 0x00, 0x50, 0x30, 0x00 , 0x00, 6} , // , 0x00, 6} ,
{0x10, 0x10, 0x10, 0x10, 0x10 , 0x00, 6} , // -
{0x00, 0x60, 0x60, 0x00, 0x00 , 0x00, 6} , // .
{0x20, 0x10, 0x08, 0x04, 0x02 , 0x00, 6} , // /
{0x3E, 0x51, 0x49, 0x45, 0x3E , 0x00, 6} , // 0
{0x00, 0x42, 0x7F, 0x40, 0x00 , 0x00, 6} , // 1
{0x42, 0x61, 0x51, 0x49, 0x46 , 0x00, 6} , // 2
{0x21, 0x41, 0x45, 0x4B, 0x31 , 0x00, 6} , // 3
{0x18, 0x14, 0x12, 0x7F, 0x10 , 0x00, 6} , // 4
{0x27, 0x45, 0x45, 0x45, 0x39 , 0x00, 6} , // 5
{0x3C, 0x4A, 0x49, 0x49, 0x30 , 0x00, 6} , // 6
{0x01, 0x71, 0x09, 0x05, 0x03 , 0x00, 6} , // 7
{0x36, 0x49, 0x49, 0x49, 0x36 , 0x00, 6} , // 8
{0x06, 0x49, 0x49, 0x29, 0x1E , 0x00, 6} , // 9
{0x00, 0x36, 0x36, 0x00, 0x00 , 0x00, 6} , // :
{0x00, 0x56, 0x36, 0x00, 0x00 , 0x00, 6} , // ;
{0x08, 0x14, 0x22, 0x41, 0x00 , 0x00, 6} , // <
{0x14, 0x14, 0x14, 0x14, 0x14 , 0x00, 6} , // =
{0x00, 0x41, 0x22, 0x14, 0x08 , 0x00, 6} , // >
{0x02, 0x01, 0x51, 0x09, 0x06 , 0x00, 6} , // ?
{0x32, 0x49, 0x59, 0x51, 0x3E , 0x00, 6} , // @
{0x7E, 0x11, 0x11, 0x11, 0x7E , 0x00, 6} , // A
{0x7F, 0x49, 0x49, 0x49, 0x36 , 0x00, 6} , // B
{0x3E, 0x41, 0x41, 0x41, 0x22 , 0x00, 6} , // C
{0x7F, 0x41, 0x41, 0x22, 0x1C , 0x00, 6} , // D
{0x7F, 0x49, 0x49, 0x49, 0x41 , 0x00, 6} , // E
{0x7F, 0x09, 0x09, 0x09, 0x01 , 0x00, 6} , // F
{0x3E, 0x41, 0x49, 0x49, 0x7A , 0x00, 6} , // G
{0x7F, 0x08, 0x08, 0x08, 0x7F , 0x00, 6} , // H
{0x00, 0x41, 0x7F, 0x41, 0x00 , 0x00, 6} , // I
{0x20, 0x40, 0x41, 0x3F, 0x01 , 0x00, 6} , // J
{0x7F, 0x08, 0x14, 0x22, 0x41 , 0x00, 6} , // K
{0x7F, 0x40, 0x40, 0x40, 0x40 , 0x00, 6} , // L
{0x7F, 0x02, 0x0C, 0x02, 0x7F , 0x00, 6} , // M
{0x7F, 0x04, 0x08, 0x10, 0x7F , 0x00, 6} , // N
{0x3E, 0x41, 0x41, 0x41, 0x3E , 0x00, 6} , // O
{0x7F, 0x09, 0x09, 0x09, 0x06 , 0x00, 6} , // P
{0x3E, 0x41, 0x51, 0x21, 0x5E , 0x00, 6} , // Q
{0x7F, 0x09, 0x19, 0x29, 0x46 , 0x00, 6} , // R
{0x46, 0x49, 0x49, 0x49, 0x31 , 0x00, 6} , // S
{0x01, 0x01, 0x7F, 0x01, 0x01 , 0x00, 6} , // T
{0x3F, 0x40, 0x40, 0x40, 0x3F , 0x00, 6} , // U
{0x1F, 0x20, 0x40, 0x20, 0x1F , 0x00, 6} , // V
{0x3F, 0x40, 0x38, 0x40, 0x3F , 0x00, 6} , // W
{0x63, 0x14, 0x08, 0x14, 0x63 , 0x00, 6} , // X
{0x07, 0x08, 0x70, 0x08, 0x07 , 0x00, 6} , // Y
{0x61, 0x51, 0x49, 0x45, 0x43 , 0x00, 6} , // Z
{0x00, 0x7F, 0x41, 0x41, 0x00 , 0x00, 6} , // [
{0x55, 0x2A, 0x55, 0x2A, 0x55 , 0x00, 6} , // 55 ??
{0x00, 0x41, 0x41, 0x7F, 0x00 , 0x00, 6} , // ]
{0x04, 0x02, 0x01, 0x02, 0x04 , 0x00, 6} , // ^
{0x40, 0x40, 0x40, 0x40, 0x40 , 0x00, 6} , // _
{0x00, 0x01, 0x02, 0x04, 0x00 , 0x00, 6} , // '
{0x20, 0x54, 0x54, 0x54, 0x78 , 0x00, 6} , // a
{0x7F, 0x48, 0x44, 0x44, 0x38 , 0x00, 6} , // b
{0x38, 0x44, 0x44, 0x44, 0x20 , 0x00, 6} , // c
{0x38, 0x44, 0x44, 0x48, 0x7F , 0x00, 6} , // d
{0x38, 0x54, 0x54, 0x54, 0x18 , 0x00, 6} , // e
{0x08, 0x7E, 0x09, 0x01, 0x02 , 0x00, 6} , // f
{0x0C, 0x52, 0x52, 0x52, 0x3E , 0x00, 6} , // g
{0x7F, 0x08, 0x04, 0x04, 0x78 , 0x00, 6} , // h
{0x00, 0x44, 0x7D, 0x40, 0x00 , 0x00, 6} , // i
{0x20, 0x40, 0x44, 0x3D, 0x00 , 0x00, 6} , // j
{0x7F, 0x10, 0x28, 0x44, 0x00 , 0x00, 6} , // k
{0x00, 0x41, 0x7F, 0x40, 0x00 , 0x00, 6} , // l
{0x7C, 0x04, 0x18, 0x04, 0x78 , 0x00, 6} , // m
{0x7C, 0x08, 0x04, 0x04, 0x78 , 0x00, 6} , // n
{0x38, 0x44, 0x44, 0x44, 0x38 , 0x00, 6} , // o
{0x7C, 0x14, 0x14, 0x14, 0x08 , 0x00, 6} , // p
{0x08, 0x14, 0x14, 0x18, 0x7C , 0x00, 6} , // q
{0x7C, 0x08, 0x04, 0x04, 0x08 , 0x00, 6} , // r
{0x48, 0x54, 0x54, 0x54, 0x20 , 0x00, 6} , // s
{0x04, 0x3F, 0x44, 0x40, 0x20 , 0x00, 6} , // t
{0x3C, 0x40, 0x40, 0x20, 0x7C , 0x00, 6} , // u
{0x1C, 0x20, 0x40, 0x20, 0x1C , 0x00, 6} , // v
{0x3C, 0x40, 0x30, 0x40, 0x3C , 0x00, 6} , // w
{0x44, 0x28, 0x10, 0x28, 0x44 , 0x00, 6} , // x
{0x0C, 0x50, 0x50, 0x50, 0x3C , 0x00, 6} , // y
{0x44, 0x64, 0x54, 0x4C, 0x44 , 0x00, 6} , // z
{0x00, 0x06, 0x09, 0x09, 0x06 , 0x00, 6} // º ??
};