root / arduino-1.0 / libraries / LiquidCrystal / examples / CustomCharacter / CustomCharacter.ino @ 58d82c77
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1 | 58d82c77 | Tom Mullins | /* |
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2 | LiquidCrystal Library - Custom Characters |
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3 | |||
4 | Demonstrates how to add custom characters on an LCD display. |
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5 | The LiquidCrystal library works with all LCD displays that are |
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6 | compatible with the Hitachi HD44780 driver. There are many of |
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7 | them out there, and you can usually tell them by the 16-pin interface. |
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8 | |||
9 | This sketch prints "I <heart> Arduino!" and a little dancing man |
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10 | to the LCD. |
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11 | |||
12 | The circuit: |
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13 | * LCD RS pin to digital pin 12 |
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14 | * LCD Enable pin to digital pin 11 |
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15 | * LCD D4 pin to digital pin 5 |
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16 | * LCD D5 pin to digital pin 4 |
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17 | * LCD D6 pin to digital pin 3 |
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18 | * LCD D7 pin to digital pin 2 |
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19 | * LCD R/W pin to ground |
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20 | * 10K potentiometer: |
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21 | * ends to +5V and ground |
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22 | * wiper to LCD VO pin (pin 3) |
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23 | * 10K poterntiometer on pin A0 |
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24 | |||
25 | created21 Mar 2011 |
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26 | by Tom Igoe |
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27 | Based on Adafruit's example at |
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28 | https://github.com/adafruit/SPI_VFD/blob/master/examples/createChar/createChar.pde |
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29 | |||
30 | This example code is in the public domain. |
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31 | http://www.arduino.cc/en/Tutorial/LiquidCrystal |
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32 | |||
33 | Also useful: |
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34 | http://icontexto.com/charactercreator/ |
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35 | |||
36 | */ |
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37 | |||
38 | // include the library code: |
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39 | #include <LiquidCrystal.h> |
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40 | |||
41 | // initialize the library with the numbers of the interface pins |
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42 | LiquidCrystal lcd(12, 11, 5, 4, 3, 2); |
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43 | |||
44 | // make some custom characters: |
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45 | byte heart[8] = { |
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46 | 0b00000, |
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47 | 0b01010, |
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48 | 0b11111, |
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49 | 0b11111, |
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50 | 0b11111, |
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51 | 0b01110, |
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52 | 0b00100, |
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53 | 0b00000 |
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54 | }; |
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55 | |||
56 | byte smiley[8] = { |
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57 | 0b00000, |
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58 | 0b00000, |
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59 | 0b01010, |
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60 | 0b00000, |
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61 | 0b00000, |
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62 | 0b10001, |
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63 | 0b01110, |
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64 | 0b00000 |
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65 | }; |
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66 | |||
67 | byte frownie[8] = { |
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68 | 0b00000, |
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69 | 0b00000, |
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70 | 0b01010, |
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71 | 0b00000, |
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72 | 0b00000, |
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73 | 0b00000, |
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74 | 0b01110, |
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75 | 0b10001 |
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76 | }; |
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77 | |||
78 | byte armsDown[8] = { |
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79 | 0b00100, |
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80 | 0b01010, |
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81 | 0b00100, |
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82 | 0b00100, |
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83 | 0b01110, |
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84 | 0b10101, |
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85 | 0b00100, |
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86 | 0b01010 |
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87 | }; |
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88 | |||
89 | byte armsUp[8] = { |
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90 | 0b00100, |
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91 | 0b01010, |
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92 | 0b00100, |
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93 | 0b10101, |
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94 | 0b01110, |
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95 | 0b00100, |
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96 | 0b00100, |
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97 | 0b01010 |
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98 | }; |
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99 | void setup() { |
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100 | // create a new character |
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101 | lcd.createChar(0, heart); |
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102 | // create a new character |
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103 | lcd.createChar(1, smiley); |
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104 | // create a new character |
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105 | lcd.createChar(2, frownie); |
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106 | // create a new character |
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107 | lcd.createChar(3, armsDown); |
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108 | // create a new character |
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109 | lcd.createChar(4, armsUp); |
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110 | |||
111 | // set up the lcd's number of columns and rows: |
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112 | lcd.begin(16, 2); |
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113 | // Print a message to the lcd. |
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114 | lcd.print("I "); |
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115 | lcd.write(0); |
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116 | lcd.print(" Arduino! "); |
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117 | lcd.write(1); |
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118 | |||
119 | } |
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120 | |||
121 | void loop() { |
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122 | // read the potentiometer on A0: |
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123 | int sensorReading = analogRead(A0); |
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124 | // map the result to 200 - 1000: |
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125 | int delayTime = map(sensorReading, 0, 1023, 200, 1000); |
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126 | // set the cursor to the bottom row, 5th position: |
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127 | lcd.setCursor(4, 1); |
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128 | // draw the little man, arms down: |
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129 | lcd.write(3); |
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130 | delay(delayTime); |
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131 | lcd.setCursor(4, 1); |
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132 | // draw him arms up: |
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133 | lcd.write(4); |
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134 | delay(delayTime); |
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135 | } |
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136 | |||
137 |