Buying hard to find parts from China.

oKors

New Member
Has anyone had any experience sourcing parts from China?
I'm looking for a PIR sensor with very small form factor and low power. This little guy here looks exactly like what I could use but I can't seem to find them ANYWHERE for sale.

At this point my option is to contact these people and find out what the minimum order qty would be. Unfortunately, I'm not in a position to buy 1,000 of these. If my little project works and I go production on these, 100 maybe...
 

eclectic

Moderator
Has anyone had any experience sourcing parts from China?
I'm looking for a PIR sensor with very small form factor and low power. This little guy here looks exactly like what I could use but I can't seem to find them ANYWHERE for sale.

At this point my option is to contact these people and find out what the minimum order qty would be. Unfortunately, I'm not in a position to buy 1,000 of these. If my little project works and I go production on these, 100 maybe...
1. Did you sort out the circuit here?
http://www.picaxeforum.co.uk/showthread.php?t=15757

2. The website says "minimum quantity negotiable"
So, go for it.
What have you got to lose? :)

3. Is this too big?
http://www.sureelectronics.net/goods.php?id=932

(and just for Brits, "Ooh err Missus" )

e
 
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oKors

New Member
1. Did you sort out the circuit here?
http://www.picaxeforum.co.uk/showthread.php?t=15757

Sort of...
I'm using the Panasonic PIR right now, it seems to be a little nurotic though. If I wave a hand or pass in front of it it triggers the high input several times. I've connected the output to a scope to verify that it is in fact the signal coming from the PIR and not from the chip.
At this point I want to try a different PIR, maybe the Panasonic is just TOO sensitive. Anyway, the PIR in my original post is the size and formfactor I'm looking for. Ultimately the whole PIR will fit inside a tube to narrow the beam down.


2. The website says "minimum quantity negotiable"
So, go for it.
What have you got to lose? :)
Yeah, I just sent them an email. I doubt they'll be willing to send me just one sample though...

3. Is this too big?
http://www.sureelectronics.net/goods.php?id=932
Yeah, that's a bit too big. For prototype and circuit verification purposes I'm sure it would be fine but it I could just start the part that I'll end up using that would be even better.
 

Dippy

Moderator
" At this point my option is to contact these people.."
- this implies you haven't contacted them yet.
So...
why don't you simply email or phone the 'little guy' and ask for purchase details MOQs etc. ?
 

Dippy

Moderator
You'll be hard pushed to find anything smaller than the 2 devices originally suggested.

If I were doing this job I would contact Panasonic - for two reasons:-
1. Technical help with this apparent multi-trigger issue. How long have you been fiddling around so far? 4 Months?? They'll know more about them than ANYONE here. Maybe you've messed up or maybe the device is a duffer...

2. Ask them for prices and price breaks and lead times.

Send the email half a dozen times and you may get a reply within a few days.

When I contacted the UK Panasonic people re the same Napion PIR device, the Panasonic rep phoned me the next day and kept sending me samples.

In parallel you contact little man in Taiwan. Parallel processing. Sit back and wait for replies.
 

Dippy

Moderator
Sorry MFB, I don't mean to sound cheeky, but, Post#1
"I'm looking for a PIR sensor with very small form factor and low power."

The one you linked to, although neat, is much larger than NApion and the one from the 'little man' of Taiwan.
Also, check out comparative SparkFun PIR power consumption. For many people 1.6mA (+reg?) isn't 'low power'.
The tiddly Panasonic NAIS/Napion use about 200 microAmps (0.2mA).
 
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