PIR E-Block

[JohnCrow]

I recently aquired a small PIR sensor which I thought would made an interesting E-block

PIR E - Block.jpg (74.13 KiB) Viewed 13743 times

The device operates from 12V. (Red Wire)
The output is 5V and goes low when movement is detected. The signal line is connected to 5V via a 10k-ohm pull up resistor. (Black Wire)

To save having to connect both 12V and 5V lines to the programmer, two 3-pin regulators were used.
12V for power and 5V for the pull up signal. This means just the 14V line from the programmer is needed.

Small caps were placed between input & ground and output & ground on both 3 pin regulators - (Value was what I had in stock in a suitable physical size)
Rather than use links on the top of the board, thin insulatated wires were run on the rear of the board.

The output defauts to bit 0, but a jumper allows a patch system to connect to ch1 to 5.

I have found during initial tests I got better operation by reading the output as a voltage on the ADC rather than logic levels.
But the device works as expected.

The 9pin D-Plug caused a bit of head scratching as the 2 rows of pins are stagged and wont fit veroboard.
I cut off pins 6-9 which allowed it to be soldered to the veroboard.(These channels are not required for this application, anyway).
Pin 9, ground, then had a short thin wire soldered to the stub and fed through to the solder side.

Flowcode Test File - ADC

SE10 PIR Simple ADC Version With Alarm LEDs V4.fcf

(9 KiB) Downloaded 674 times

Having tried digital detection with the completed E-Block it now works fine.
Must have been somthing to do with running initally just patched using a protoboard.
Also means a much simpler flowcode program, and can be used on a PIC without ADC.

Flowcode Test File - Digital

SE10 E Block - Simple Digital Detected.fcf

(7.5 KiB) Downloaded 667 times

[Steve]

Looks like an interesting project - thanks for taking the time to post.

The 9pin D-Plug caused a bit of head scratching as the 2 rows of pins are stagged and wont fit veroboard.
I cut off pins 6-9 which allowed it to be soldered to the veroboard.(These channels are not required for this application, anyway).
Pin 9, ground, then had a short thin wire soldered to the stub and fed through to the solder side.

I'll now shamelessly plug our E-blocks patch board which will help you or others in a similar situation:
http://www.matrixmultimedia.com/product ... PHPSESSID=

There is an associated "protoboard" E-block too for those wanting to play around without too much soldering.

[JohnCrow]

Thanks Steve
I have already used your patch board for a couple of projects.

[singhdeol]

thx for sharing the project with us

[DylanBalloo]

Hello there, can you please tell me if we can use the PIR directly in the MIAC?

[Enamul]

Hi
PIR sensor output 5v signal which can be easily sensed by MIAC

[DylanBalloo]

What will be the input to the miac, input digital or analog?

[Enamul]

Of course digital input..

[DylanBalloo]

Can you please check this program for me..Its a simple program..I dont know how to use the Digital Input?
If you have a simple program like that I've attached can you please send me.
Thanks
Enamul

[DylanBalloo]

PIR.fcf

(5.5 KiB) Downloaded 452 times

[medelec35]

Hi DylanBalloo,

For a single channel digital input your looking for a 0 or 1 (no higher!)

So if you change: LDR > 100
to
LDR = 1

It will then work the way you have intended.

If you use analogue input then:
If ReadAsByte then range is 0 to 255 (8bit)
If ReadAsInt then range is 0 to 1023 (10bit)
With Miac you will need to look at programming guide:
http://www.matrixmultimedia.com/resourc ... -guide.pdf
to check maximum reading as I believe the upper value will be limited due to clamping.

Martin

[DylanBalloo]

Ok Enamul....thanks its working now