Search found 6 matches

by mdingena
21 Aug 2018, 15:34
Forum: Hardware
Topic: Hardware orientation for home automation project
Replies: 4
Views: 8227

Re: Hardware orientation for home automation project

We here also use Node Red to access the process image with a command block that calls "piTest ...", why not? Let's assume I've got a house with 70 buttons and 70 relay switches. I'd use Connect + 5 * DIO. Now, every cycle, Node-RED would have 70 command blocks that check for the state of ...
by mdingena
21 Aug 2018, 15:30
Forum: Hardware
Topic: Why do DI/DO have 16 and not 28 I/O?
Replies: 4
Views: 7290

Re: Why do DI/DO have 16 and not 28 I/O?

I understand we can't discuss this at length. I agree this is largly due to cost-effective pricing on your end, but like you said yourself: for anyone needing both inputs and outputs, there really is no benefit of using dedicated modules when DIO is much more cost-efficient. Thanks for explaining.
by mdingena
19 Aug 2018, 12:27
Forum: Hardware
Topic: Why do DI/DO have 16 and not 28 I/O?
Replies: 4
Views: 7290

Re: Why do DI/DO have 16 and not 28 I/O?

Sorry, but I disagree. Looking at shop prices, they are only marginally cheaper. Considering a RevPi setup can be a maximum of 10 modules, I doubt using DI+DO modules over DIO modules is more cost effective. Regardless of costs, are there plans to produce 28 pin DI and DO modules eventually or is th...
by mdingena
16 Aug 2018, 13:04
Forum: Hardware
Topic: AIO - Sampling rate
Replies: 6
Views: 8813

Re: AIO - Sampling rate

I'm certainly no expert, but doesn't the core module have a cycle time of 5 milliseconds? That would mean it's running at 200 Hz?
by mdingena
16 Aug 2018, 09:59
Forum: Hardware
Topic: Why do DI/DO have 16 and not 28 I/O?
Replies: 4
Views: 7290

Why do DI/DO have 16 and not 28 I/O?

I almost dare not ask this question, because for some reason it feels like there is a very obvious reason. But I don't understand why the DI and DO modules only use 16 out of the 28 present ports for input / output. Why doesn't a DI / DO just use all 28 ports for input / output? What is the advantag...
by mdingena
15 Aug 2018, 14:17
Forum: Hardware
Topic: Hardware orientation for home automation project
Replies: 4
Views: 8227

Hardware orientation for home automation project

Hello, I'm doing research on home automation, and I've stumbled across Revolution Pi. I'm trying to see if this matches my intentions. Can you please help me put together the correct setup? I'm a software developer by trade. I'm not very familiar with electrical engineering, but I have friends who a...