Blazemaguire
Senior Member
I have a student in my year 11 electronics class who, is struggling to get his PIR sensor working for his burglar alarm.
The PIR he is using is a 10m long range (black) model:
http://www.rapidonline.com/netalogue/specs/61-1500e.pdf
The PIR is being used as a digital input, is connected to a ~5.5V source, and he is using a 18x chip.
Does anybody know how it is connected/what resistors are needed etc.?
So far, he has tried connecting numerous resistors from the negative leg to 0v, to protect the PIR, ranging from 0-10M ohms. He has also tried connecting the positive leg to negative and the negative to positive as is done with infra-red sensors.
I have used phototransistors + Infra-reds before, but not PIRs.
Should the PIR be treated as an analogue input or digital?
Many thanks
The PIR he is using is a 10m long range (black) model:
http://www.rapidonline.com/netalogue/specs/61-1500e.pdf
The PIR is being used as a digital input, is connected to a ~5.5V source, and he is using a 18x chip.
Does anybody know how it is connected/what resistors are needed etc.?
So far, he has tried connecting numerous resistors from the negative leg to 0v, to protect the PIR, ranging from 0-10M ohms. He has also tried connecting the positive leg to negative and the negative to positive as is done with infra-red sensors.
I have used phototransistors + Infra-reds before, but not PIRs.
Should the PIR be treated as an analogue input or digital?
Many thanks