Hi all,
I have been trying to build a wireless PIR sensor successfully to no avail.
Pretty new to electronics here so please pardon any wrong terms/details being left out.
So below is a circuit I built, when there is a motion being sensed, it will trigger the light to lit up for few seconds through the 555 timer.
It actually works perfectly if I did it NOT wirelessly, or when they are both very near beside wirelessly.
But my main problem is, when I start testing them far apart (less than 3 meters which I read that without antenna the range could go up to 3metres, but right now even below 3metres, it couldn't sense properly and moreever I did solder antenna to each of the modules)
It could either transmit the signal over, but the light just continued lighting up until I bring them close enough to sense it to turn off.
Or it just couldn't even send any signal over.
I am currently using a 9v battery to supply both, as I understand that the receiver module have to receive 5v, my 9v battery goes into a 5v regulator which supplies the voltage to the decoder and the receiver module.
And as for the transmitter module, I supply them directly with a 9v battery.
Here is how I connect them in real life.
I feel it may have something to do with my type of batteries/wrong voltage supply, but I just couldn't figure what is it.
Appreciate any help!
I have been trying to build a wireless PIR sensor successfully to no avail.
Pretty new to electronics here so please pardon any wrong terms/details being left out.
So below is a circuit I built, when there is a motion being sensed, it will trigger the light to lit up for few seconds through the 555 timer.
It actually works perfectly if I did it NOT wirelessly, or when they are both very near beside wirelessly.
But my main problem is, when I start testing them far apart (less than 3 meters which I read that without antenna the range could go up to 3metres, but right now even below 3metres, it couldn't sense properly and moreever I did solder antenna to each of the modules)
It could either transmit the signal over, but the light just continued lighting up until I bring them close enough to sense it to turn off.
Or it just couldn't even send any signal over.
I am currently using a 9v battery to supply both, as I understand that the receiver module have to receive 5v, my 9v battery goes into a 5v regulator which supplies the voltage to the decoder and the receiver module.
And as for the transmitter module, I supply them directly with a 9v battery.
Here is how I connect them in real life.
I feel it may have something to do with my type of batteries/wrong voltage supply, but I just couldn't figure what is it.
Appreciate any help!