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Re: Banggood relay board


 

Steve

The board you reference is probably "doable" with Node-Red, but over the last year, I have not seen anyone write a flow for one.

Is this the only board you would consider?? If so, Node-Red commands would need to be written to access the board's API.? Very doable, but would need to be created from scratch. ?

Another approach is to use a relay board that others on this list have already used.? Here are links to some of the boards I have seen used by others on this list.? Look over the options and if one of these meets your needs, we can steer you to already completed Node-Red flows.

Alan

These can be accessed via a wireless TCP connection, and maybe nice for a remote location of our beverage controller. ? Dave, NO0X, and Mark, MKCM Software have flows for these boards:

?



You can use GPIO pins on the Raspberry PI to operate?relay boards.? There is a simple to use Node available to use that gives input/output access to each GPIO pin, I have flows for this:



I like this board, which again uses GPIO pins:



Mike, VA3MW posted a GPIO based board earlier on this forum.

Mike, VA3MW likes KMtronic boards, and has Node-Red flows for them:




USB based boards require board-specific drivers to be installed on the Raspberry Pi, and I have not had good luck making these work, so none are listed.

Alan



On Tue, Aug 11, 2020 at 10:16 AM Steve Bunting M0BPQ <steve@...> wrote:
Hi everyone,

I am very new to Node-Red and want to control a beverage array using a 16 relay board from Banggood. I think these are the same as the Sainsmart ones on amazon.



the inbuilt webserver is hopeless so Node-red control of them over TCP seems to be a good option. Has anyone here used a similar board and can share a flow with me? I keep watching you tube tutorials, but Im finding it tough to get started.

I have NR installed on a raspi already.

73
Steve, M0BPQ

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