Hi all,
First off, I would like to say that I have been searching the forums for the past few days for any information that could help me with the problem I am having, as there are numerous threads about PIR sensors. However, I have not been able to find anything that I can use. Please don't redirect me to the search button
I am working on my semester assignment at school, and I am designing and building a wireless alarm system. I have the rest of the system working, but I have run into trouble with my PIR sensors. Here is a bit of info, as I know that will be the first thing you ask for
Part no.: Murata IRA-E712ST3
Supplier: Farnell Australia
http://au.farnell.com/murata/ira-e712st3/pir-high-light-immunity/dp/1006207
I am looking for help with connecting this to my 08M Picaxe. The first thing I tried was connecting the output leg of the component directly to an ADC input on the microcontroller, then using readadc to read its value. This turned up a strange result, though. When using debug on the variable, I saw that it was just letters, instead of the expected numbers from 1-255.
I then decided to test the output voltage of the component, by using a multimeter between the ground leg and the output leg. From this, I found a constant voltage of around 1.2/1.3 volts, even when there was movement.
Most of the threads I found on these forums did not say whether they were referring to the single sensor, or the complete module, so I could not use the information in them.
Any help would be greatly appreciated.
Thanks, Jagger.
First off, I would like to say that I have been searching the forums for the past few days for any information that could help me with the problem I am having, as there are numerous threads about PIR sensors. However, I have not been able to find anything that I can use. Please don't redirect me to the search button
I am working on my semester assignment at school, and I am designing and building a wireless alarm system. I have the rest of the system working, but I have run into trouble with my PIR sensors. Here is a bit of info, as I know that will be the first thing you ask for
Part no.: Murata IRA-E712ST3
Supplier: Farnell Australia
http://au.farnell.com/murata/ira-e712st3/pir-high-light-immunity/dp/1006207
I am looking for help with connecting this to my 08M Picaxe. The first thing I tried was connecting the output leg of the component directly to an ADC input on the microcontroller, then using readadc to read its value. This turned up a strange result, though. When using debug on the variable, I saw that it was just letters, instead of the expected numbers from 1-255.
I then decided to test the output voltage of the component, by using a multimeter between the ground leg and the output leg. From this, I found a constant voltage of around 1.2/1.3 volts, even when there was movement.
Most of the threads I found on these forums did not say whether they were referring to the single sensor, or the complete module, so I could not use the information in them.
Any help would be greatly appreciated.
Thanks, Jagger.