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196 posts

Master Geek
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# 175423 29-Jun-2015 12:00
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I am looking for a good range of Ethernet based I/O controllers that are flexible and expandable for tasks such as enabling and monitoring smart home functions.

I'm specifically looking for controllers that can be connected directly to the LAN and monitored via PHP, Linux bash scripting and or custom written applications.

As a developer, I'm wanting to avoid controllers that have limited inputs or that come with OEM software that does not allow manual programming or scripting. I simply want to be able to connect to the controllers IP address and port, then send commands when and where I want without having to install drivers or stuff like java.

Example: A nice cheap combined I/O controller that contains:

(a) Temperature Sensor inputs (suitable for logging solar hot water panel input/output temps and hot water cylinder temps and maybe room temperatures)

(b) Several Opto-Isolated inputs or simple dry contact sensors to monitor when solar pumps are running, hot water element is on/off, doors open closed, switches open/closed etc)

(c) Several relays for switching devices remotely/automatically (e.g. Enable electrical cylinder heating at controlled times or temperatures, switching lights remotely etc)

(d) Optional RS232 ports.

While we are at it, also an Ethernet mains power logging/usage controller using clip on current sensors (similar to the Ubiquiti mFI system) is also on the list.

Suggestions most welcome ?

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  # 1333277 29-Jun-2015 12:05
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have you looked into raspberry pi or arduino



196 posts

Master Geek
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  # 1333279 29-Jun-2015 12:09
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Jase2985: have you looked into raspberry pi or arduino


Yes, Those may be options if I can't find what I'm looking for in an off-the-shelf box. I like tinkering with electronics but prefer the plug and play controller path at this stage.

 
 
 
 


gzt

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  # 1333561 29-Jun-2015 16:34
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Imho that is a lot for one module and therefore it will not be cheap, but there are many cheap individual modules on amazon for most of those features. Apologies if I'm stating the obvious and you already know this ; ).



196 posts

Master Geek
+1 received by user: 11

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  # 1333580 29-Jun-2015 16:55
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gzt: Imho that is a lot for one module and therefore it will not be cheap, but there are many cheap individual modules on amazon for most of those features. Apologies if I'm stating the obvious and you already know this ; ).


Yep, you are quite correct. I'm asking for a lot on one box but there are some promising options out there.

I already own a nice little combination unit that I sourced from Ocean Controls in AU many years ago that has 8 x relays, 4 x opto-isolated inputs, 2 x analog inputs and a PWM controller plus RS485. The only problem with that is it is USB only and requires a Windows .dll for program control.

The Ubiquiti mFI series that was suggested on another topic of mine looked good to start with until I ran into the limitations, such as only 2 x sensors per mPort and things like temp sensors that are designed for wall mounting and probably not suitable for probes into solar panels or water heaters. I initially got excited with mFi thinking the sensors were WiFi also but they are not. The bridge to LAN idea is great and I may have some use for that product line in the future.

I might need to suck it up and start looking at industrial controllers that can be 'stacked' as needs arise but my eyes are bleeding.

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