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PULSE RELAY
8 years 10 months ago #2796
by matteo_vr
PULSE RELAY was created by matteo_vr
Goodmorning everyone
I wanted to know if is possibe make the relay acts as a button .
do the ON command and after two seconds back in OFF state
thank you
I wanted to know if is possibe make the relay acts as a button .
do the ON command and after two seconds back in OFF state
thank you
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8 years 9 months ago #2914
by matteo_vr
Replied by matteo_vr on topic PULSE RELAY
NO solution????
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- markusonfire
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8 years 9 months ago - 8 years 9 months ago #2918
by markusonfire
Replied by markusonfire on topic PULSE RELAY
When you say "The Relay" which particular relay are you referring to?
In general, yes, it's possible to make a relay activate for two seconds then deactivate.
Just connect it's control pins to GND and a GPIO Output, then have the GPIO pin pulled high for 2 seconds before being pulled low again.
You might need to be more specific or post your existing schematics/code if you want more help.
In general, yes, it's possible to make a relay activate for two seconds then deactivate.
Just connect it's control pins to GND and a GPIO Output, then have the GPIO pin pulled high for 2 seconds before being pulled low again.
You might need to be more specific or post your existing schematics/code if you want more help.
Last edit: 8 years 9 months ago by markusonfire. Reason: typo
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8 years 9 months ago #2925
by matteo_vr
Replied by matteo_vr on topic PULSE RELAY
thank you
I meant the project .( iot-playground.com/blog/2-uncategorised/...y-switch-arduino-ide ).. I would simply like to return in off the relay because I have to put it in parallel with a button
then if you have a suitable piece of code to my project
graze 1000
I meant the project .( iot-playground.com/blog/2-uncategorised/...y-switch-arduino-ide ).. I would simply like to return in off the relay because I have to put it in parallel with a button
then if you have a suitable piece of code to my project
graze 1000
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- markusonfire
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8 years 9 months ago - 8 years 9 months ago #2926
by markusonfire
Replied by markusonfire on topic PULSE RELAY
This is pretty simple stuff which you could teach yourself with a bit of study.
Rather than pasting the code for you - I'll help guide you thru one way to do it (Once you understand this, you might think of better and cleaner ways to do it).
See this part in the code:
It's basically saying "Look at the command recieved, and put the relay into that state by setting the GPIO to high or low"
Essentially what you want, is that for all requests, the relay should be activated for 2 seconds, then turn deactivated (Like a momentary switch).
Although the sketch is designed to maintain and control state (And I'm on the train, so don't have time to re-tweak the whole sketch), here's a quick-and-dirty way to get your desired behavior.:
Change the above code to the following:
Like I said, this is a messy Way of doing things, and leaves a lot of artifacts in the code that become superfluous, but try it out, and work from there.
The best way to get the behavior you want is to understand the existing code, and then make small changes, testing as you go.
Good luck.
Rather than pasting the code for you - I'll help guide you thru one way to do it (Once you understand this, you might think of better and cleaner ways to do it).
See this part in the code:
// Match the request
int val;
if (req.indexOf("/gpio/0") != -1)
val = 0;
else if (req.indexOf("/gpio/1") != -1)
val = 1;
else {
Serial.println("invalid request");
client.stop();
return;
}
// Set GPIO2 according to the request
digitalWrite(2, val);It's basically saying "Look at the command recieved, and put the relay into that state by setting the GPIO to high or low"
Essentially what you want, is that for all requests, the relay should be activated for 2 seconds, then turn deactivated (Like a momentary switch).
Although the sketch is designed to maintain and control state (And I'm on the train, so don't have time to re-tweak the whole sketch), here's a quick-and-dirty way to get your desired behavior.:
Change the above code to the following:
// Match the request
int val;
if (req.indexOf("/gpio/0") != -1)
val = 0;
else if (req.indexOf("/gpio/1") != -1)
val = 1;
else {
Serial.println("invalid request");
client.stop();
return;
}
// Set GPIO2 High no matter if the request said High or Low
digitalWrite(2, 1);
delay(2000); Wait for 2 seconds
// Set GPIO2 back to low
digitalWrite(2, 0);Like I said, this is a messy Way of doing things, and leaves a lot of artifacts in the code that become superfluous, but try it out, and work from there.
The best way to get the behavior you want is to understand the existing code, and then make small changes, testing as you go.
Good luck.
Last edit: 8 years 9 months ago by markusonfire.
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8 years 9 months ago #2949
by matteo_vr
Replied by matteo_vr on topic PULSE RELAY
tank's this week try and feedback
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