Difference between revisions of "ChristmasTree2012"
From Francois Louw
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[[File:tree-2012-schematic.jpg|500px]] | [[File:tree-2012-schematic.jpg|500px]] | ||
| − | The MCLR resistor is 4.7K and the LED resistors will depend on your LEDs. Remember that there is a limit on the amount of current that the PIC can supply. I limited my 2V LEDs to 0.8mA by using 3.8K Resistors. The total current usage is 20mA when all the LEDs are on. Assuming the 9V battery has a 400mAh life then this will give me at least 20 hours. Realistically I should get 30+ hours. | + | The MCLR resistor is 4.7K and the LED resistors will depend on your LEDs. Remember that there is a limit on the amount of current that the PIC can supply. I limited my 2V LEDs to 0.8mA by using 3.8K Resistors. The total current usage is 20mA when all the LEDs are on. Assuming the 9V battery has a 400mAh life then this will give me at least 20 hours. Realistically I should get 30+ hours. For timing I used a 10MHz crystal. |
==Source Code== | ==Source Code== | ||
