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wiki:opconfig:tabs:lightsio [2018/04/03 02:32] opadmin [Lights Used as Indicators] |
wiki:opconfig:tabs:lightsio [2019/02/21 03:36] opadmin [General Purpose Input/Output Ports A & B] |
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- External Output A/B - Turn Off\\ | - External Output A/B - Turn Off\\ | ||
- External Output A/B - Pulse\\ | - External Output A/B - Pulse\\ | ||
+ | - External Output A/B - Blink\\ | ||
You can then assign a trigger to these functions and in so doing control the output of these ports. The first three functions are self-explanatory, | You can then assign a trigger to these functions and in so doing control the output of these ports. The first three functions are self-explanatory, | ||
- | What you do with these outputs is up to you, but remember these are logic-level outputs! That means they can //not source// enough current to actually power something, not even an LED! Instead consider | + | The fifth function will cause the output |
- | If you want to use these outputs to turn on a lamp, or a relay, or some other object that draws current, you will need to use a driver circuit. You can find a schematic for a MOSFET driver adapter on the [[wiki: | + | What you do with these outputs is up to you, but remember these are logic-level outputs! That means they can not source enough current to actually power something, not even most LEDs! Instead consider the outputs like signals, and the signals can tell some other more powerful circuit to do something, or they could be used as direct inputs into another microcontroller (such as another Arduino). (If you know what you are doing, and you are certain your LEDs do not draw more than 20mA, you can connect them directly to the port). |
+ | |||
+ | If you want to use these outputs to turn on a lamp, or a relay, or some other object that draws more than 20mA of current, you will need to use a driver circuit. You can find a schematic for a MOSFET driver adapter on the [[wiki: | ||