help with class work

khankins513

This might sound like a stupid question but how do I get a LED to blink at 5hz?

JonnyMac

Do you know the formula T = 1 / F?

Look it up. Start there.

erco

Per Jon, 5 hz is 5 flashes per second. Pretty fast to the eye, but nothing to a microprocessor.

Numerous ways to do this. Look up the TOGGLE command. See also PAUSE and DO/LOOP.

Give it a shot and let us know how you make out. Easy peezy.

SRLM

erco wrote: »

Numerous ways to do this. Look up the TOGGLE command. See also PAUSE and DO/LOOP.

Although note that these are PBASIC commands, which are not applicable to PropC.

Andy Lindsay (Parallax)

The textbook or web guide you are working from will probably have a blinking light example activity with a circuit and program. It'll also have an explanation that a Hz is a repetition per second. That means 5 Hz would be 5 repetitions per second. If the light is supposed to blink at 5 Hz, it means that each blink has to last 1/5 of a second. Your task will be to modify the example program so that the delays or pauses for the on and off portions of each blink add up to 1/5 of a second.

Homework assignments like this one will be a lot easier if you read the textbook/web guide you are working from, follow the instructions in the example activities carefully, build the circuits they show you, and hand enter & test the code examples. When you do end up needing help from the forums, make sure to be really specific with your question. Explain your setup carefully along with what you know up to the point you are stuck. That will help us give you a useful answer to get you over the hurdle.