08-27-2014 05:38 PM - edited 10-05-2014 08:53 AM
Well, my assumption is... like the page says at:
That "Once connected, the WeMo Maker allows you to monitor a variety of 5v analog sensors."
I'd assume however after reading lots this is not actually "Analog" with an ADC that people assume.
It appears to be an input that is triggered when you pull the sense pin to ground?
08-27-2014 06:43 PM
I might be missing something - the WemoMaker appears to only be triggered by an off/on sensor switch. To me most of those look like analog measuring devices?
It would be good to know a bit more about the WemoMaker specs, like what is the input sensor's on/off voltage threshold?
And looking at the future, is the input sensor a threshold sensor only or is it an A/D input and we can expect to be able to read the input voltage as well? Will the input levels be adjustable?
08-28-2014 04:49 AM - edited 08-29-2014 09:09 AM
To start here are examples of sensors that appear to be compatible with the WeMo Maker. IE 5V operating voltage. TTL
Digi-key sells some PIR type motion sensors with pretty fast shipping. Here is a link to 5v Lead free RoHS type. You would have to solder leads on to them.
Alternatively this sensor could work too although I've never ordered from them before. Since it doesn't mention anything about being lead free or RoHS I guess it's not.
Here is a more expensive example of a flow sensor that is 5 v with no external circuit required.
Here's a pretty easy to interface light sensor and very low cost and with a built in circuit. Also make sure you observe the wiring for the part you order. It might be a good idea to order multiple units in the event of incorrect wiring.
Part Number: OPL550
Link to digikey: http://www.digikey.com/product-detail/en/OPL550/365-1115-ND/498718
Pin # Sensor
Note: the pins 1 and 2 will have to be switched to accommodate the proper connections on the WeMo...
(Make sure you select 5v type before you order as this link isn't filtered by 5v)
Before you start refer to this post for proper connection to the WeMo especially the power supply isolation aspect...
FYI - I do not work for Digi key and I'm not benefiting anyway from the links displayed. I've used Digi-key for hundreds of orders in the past they are very good shipping speed wise and for service. For example most of my orders were place before 4:30 pm EST and they arrived next day. Almost 95% of the time.
I'll post more in the future. But before you order do your research first!
08-28-2014 06:38 AM
This is GOLD!
Thanks for the link, I had a bunch of photodiodes laying around here somewhere, but I would be interested in monitoring a temperature sensor and @ a certain temp. trigger.
08-29-2014 09:10 AM
I've updated my orginal post to include a light sensor and more information.