<![CDATA[Looking for unit to read the status of several relay-contacts via OneWire-bus]]>Hi!
For one of my projects I would like to read the status of several relay contacts with a OneWire-Device connected to Grove port B.
I know, there is the DS2408 IC, but I am looking for a "more complete" unit, ready to connect the relay contacts and with a grove connector.
I would like to ask the community, if anybody is aware of such a unit and where I could buy it.
Thanks - grelm

]]>https://community.m5stack.com/topic/1096/looking-for-unit-to-read-the-status-of-several-relay-contacts-via-onewire-busRSS for NodeWed, 29 Apr 2026 02:29:49 GMTThu, 20 Jun 2019 07:54:57 GMT60<![CDATA[Reply to Looking for unit to read the status of several relay-contacts via OneWire-bus on Sun, 30 Jun 2019 19:45:09 GMT]]>Hi!
Are there really no answers to my questions?
Thanks - grelm

]]>https://community.m5stack.com/post/4735https://community.m5stack.com/post/4735Sun, 30 Jun 2019 19:45:09 GMT<![CDATA[Reply to Looking for unit to read the status of several relay-contacts via OneWire-bus on Thu, 27 Jun 2019 20:14:58 GMT]]>My project reads 10 temperature sensors DS18B20 via a OneWire.bus (or 1-wire-bus) which is connected to the Grove B port of the M5Stack Fire.
In addition to those 10 temperaturesensors I would like to capture the status of relay contacts (on or off). For that I would need some kind of input device which I can connect to the existing OneWire-bus.

In the meantime I found 2 devices which would possibly do the desired job:

New questions:

  • Has anyone already worked with these modules?
  • What are your experiences with these modules?
  • Are there usable Arduino librararies for these modules?

Thanks - grelm

]]>https://community.m5stack.com/post/4710https://community.m5stack.com/post/4710Thu, 27 Jun 2019 20:14:58 GMT<![CDATA[Reply to Looking for unit to read the status of several relay-contacts via OneWire-bus on Thu, 27 Jun 2019 15:42:56 GMT]]>Hi grem, I'm not even sure what you are asking.
As far as I know there isn't a 1wire way to do this.

]]>https://community.m5stack.com/post/4708https://community.m5stack.com/post/4708Thu, 27 Jun 2019 15:42:56 GMT<![CDATA[Reply to Looking for unit to read the status of several relay-contacts via OneWire-bus on Thu, 27 Jun 2019 11:20:54 GMT]]>Hi again!
Is really nobody reading relay-contacts via the OneWire-bus?
Or is there a better alternative solution for such an application? How?
Thanks - grelm

]]>https://community.m5stack.com/post/4707https://community.m5stack.com/post/4707Thu, 27 Jun 2019 11:20:54 GMT