Wake-up over radio
-
Hi there,
Is there any way to wake up from sleep when a radio message is received ? I run a battery powered motion sensor, and after a few months the battery is empty, due to a lot of motion triggering putting the arduino out from sleep mode : in the motion detector sketch - this is the sketch I'm actually using - the PIR output is connected to one of the two interruptable pins, so at each movement detected, there is an interrupt waking up the pro mini. I would like to put the node in std-by during the presence of someone in my house, and put the node in active mode when the house is empty, and I would like to do this over the air.
Thanks for your ideas -
When the node is asleep radio message are not received (no interrupt from radio) I tackled you problem by having the node waking up every minute and check with the controller if Motion needs to be on/off and switch accordingly. An other (additional) measure is to put the motion detector hardware in the "non-retrigger" setting. This way you can avoid large amounts of on/off triggering. Depending on your motion detector there is probably a jumper (3) or solder area (marked red) to be bridged
Take a look at PIR or link. (btw one of these pins/ areas is also the 3.3 connection, point marked "H" in first picture). There are a few variations in design make sure that your sensor is similar.
-
I doubt if the ATMega is the big battery-depleter in this case. Most probably the nRF24 radio will consume the most power.
See e.g. http://forum.mysensors.org/topic/250/how-do-i-use-the-interrupt (scroll down a bit) for PIR power consumption. -
@AWI : yes, the sleep is already implemented in my sketch, the fact is that I'm using an old fashioned PIR that I have hacked, removing the RF part and replacing it with an nRF. The whole think is powered by a 9v cell. The newest PIR's showed above are probably much more efficient regarding power needs. That's why I was really looking to have some possibility to play with the interrupt system from the nRF library
-
I doubt if the ATMega is the big battery-depleter in this case. Most probably the nRF24 radio will consume the most power.
See e.g. http://forum.mysensors.org/topic/250/how-do-i-use-the-interrupt (scroll down a bit) for PIR power consumption.
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better 💗
Register Login