DS18B20 Homeduino

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Hello,
could anyone give me an example, how to get 2 (or more) DS18B20 sensors working, when using homeduino?
I don`t know what to put in the pimatic config. The help just says this code:

{
“id”: “homeduino-temperature-dst”,
“name”: “DST”,
“class”: “HomeduinoDSTSensor”
}
but this does not work.
Thanks in advance for your time. I know this is a very “easy” question.

Hi,

Are the ds18b20 connected to the Arduino or to the Pi?
As far as I know the homeduino sketch only supports DHTxx at the moment (correct me if I’m wrong).

If you have them connected to the pi look here
http://pimatic.org/plugins/pimatic-ds18b20/

Find out your sensor ID’s

ls /sys/bus/w1/devices

You should see some numbers like 28-xxxx, thats you sensor ID.

They are connected to the arduino. I did not know that it is not yet supported. my bad
Another question of mine would be if I can send raw data (just like in Pilight, i just switched) with the homeduino (433mhz) the transmitter is already connected.

I have one lying around and I’d like to see it supported by the homeduino, too!
I might pick this up.

@georg90 that would be great.

There exist a implementation for the Arduino and onewire bus. Look at github for ronaldeen. He made this.
You need to upload a new Homeduino.ino to the arduino and you must install his pimatic-homeduino.
I think in the next week’s this would be merged into pimatic

I saw that the homeduino plugin with the HomeduinoDSTSensor is commited.
Is an update of the plugin sufficient? And, which pin of the arduino should be used for the DS18B20?
Maybe the config.json code could be add to the pimatic-homeduino plugin page?!

update: looking into the script it should be digital pin 2?!

@skipper79 I think it is not yet fully implemented. I have the latest dev versions on my system, but i can only get this error in pimatic :

error [pimatic]: Could not get attribute value of Aussentemperatur.temperature: argument_error

But with the homeduino sketch (the onewire branch) the ardunio can at least handle the ds18b20 sensors and you can get their infos in the monitor

Does anyone know whether the Support of the DS18b20 sensors with homeduino (on Arduino Nano) works now?

hm … have you tried like the example device :

DST Dallas DS18B20 sensor example:

{
  "id": "homeduino-temperature-dst",
  "name": "DST",
  "class": "HomeduinoDSTSensor",
  "pin": 12,
  "address" : "104AE9B50008000E",
  "interval" : 10000
}

if all fails, @sweetpi should have a quick look at it.

Hi guys!

I also have trouble connecting these sensors to a homeduino (on atmega 2560). I did everything described on the pimatic-homeduino plugin page, connected the sensors to pin 12 and when I start pimatic I get this error

error [pimatic-homeduino]: Couldn’t scan for DST sensors: Object sensors has no method ‘shift’.

Am I doing something wrong?

@sweetpi No idea?