Read analog sensor manually (Homeduino)

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I don’t know if this is already possible, but I’d like to check the direct value of a homeduino analog sensor when I execute a rule.
This could also apply to for example ping devices.

Is this possible?

Is there maybe a workaround to do this?

You mean something like this?
https://github.com/pimatic/pimatic-homeduino#analogsensor-example

@Cryonic90 I am using the AnalogSensor to read out a light sensor, but I would like to be able to read it’s value when for example I press a button.
Right now the sensor just periodically checks the light value, and when I press the button I get the latest readout, but I want it to read out the current value.

@FrostedKiwi said:

I’d like to check the direct value of a homeduino analog sensor when I execute a rule.
This could also apply to for example ping devices

Yes. This is possible. Following the AnalogSensor example, you can use something like $homeduino-analog-sensor.voltage > 9

@mwittig said:

$homeduino-analog-sensor.voltage

That’s not what I am trying to achieve. Since I don’t want the light sensor to keep spamming, I’ve put it on a refresh rate of 1 minute.
So when the light sensor reads that value, and I press the button (which turns of my light), I want to see the new light value immediately, instead of waiting until the next scheduled readout.

you could try to fiddle with If voltage of $homeduino-analog-sensor gets updated ... or something like that…

Isn´t possible at the moment. We need an “force update” event to archive this.

@FrostedKiwi said:

That’s not what I am trying to achieve. Since I don’t want the light sensor to keep spamming

Honestly, I don’t see the problem. Reading a sensor every 100ms should not create a huge overhead. Rather than adding “force update” to homeduino I’d would prefer to keep things simple. May be you can use something else than homeduino for your light sensor.

@mwittig said:

May be you can use something else than homeduino for your light sensor.

Why not use an esp. Maybe you can try it with espimatic ? It’s possible to read the analoge value over a pin on the esp.

@Icesory This is indeed what I was looking for. I guess I’ll have to find another way to achieve this then.

Create a mysensors gateway and you can create sensors for anywhere in the house. I also have a light sensor (Arduino pro mini, LDR, NRF24) near the window that is connected to a lot of rules for automatic lightning.

@sweebee Doesn’t MySensors work exactly the same as the Homeduino AnalogSensor? So it just broadcasts every x seconds/minutes?

Yes, it does, but you can also send commands to a node.
Whenever that command is received you can let the node send the values, so you create a send-on-request in the node.

@FrostedKiwi no, that depends on how you program your node. If it’s not battery powered you can check it always like:

int sentValue;
int value = analogRead(A0);
If(value != sentValue){
 node.send(msg.set(value));
 sentValue = value;
}

Now it only sends If the value has changed.