HomeGenie Forum
Automation Program Plugins and Wizard Scripting => Help => Topic started by: codedmind on September 13, 2014, 12:29:07 PM
-
Hy there,
Before using HG i have my rpi with 3 DS18B20 sensors to check temperatures from my solar tank.
I use a python script to check the values, like adafruit examples for this sensor, i have three from this kind because this kind of sensors can be placed in parallel
https://learn.adafruit.com/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing/overview
My question is how can i use the same script or should i do another one, and how, so i can have it working like the dh-11 sensor widget?
Thanks
-
No one can help?
I would love some directions how to do a hello world widget/program in HG.
Thanks
-
There should be two ways of reading 1-Wire sensors data:
1) use /sys/bus/w1/devices to access 1-wire sensors data. This way you could just create a Python app in HomeGenie and use thise code: https://www.modmypi.com/blog/ds18b20-one-wire-digital-temperature-sensor-and-the-raspberry-pi (https://www.modmypi.com/blog/ds18b20-one-wire-digital-temperature-sensor-and-the-raspberry-pi)
2) directly communicating with 1-wire devices through gpio by using low level communication as it happen with the DHT-11 program. This is a lot of code to write since it has to implement all 1-wire comm specifications. In the future 1-wire protocol might be implemented as part of the RasbperrySharp-IO library (that HG is using for low level gpio communication).
I thinks the quickest way would be the 1 one. Let me know progress about this.
Cheers,
g.
-
I'm attacching the Python app so you can import it in HG.
The script just popup the current temp value. It doesn't currently implement a virtual module.
g.
-
Thank you gene,
Later i will post my progress
Thanks
-
added modprobe commands to the script, the program will try to load required 1-wire modules first.
g.
-
Hy gene,
After import i change the sensor id but i get the following error
Runtime.Error = "CR: expected str, got tuple"
I try remove the first three lines, the ones inside """ but the error keep pop
-
try changing last lines of the source code like this:
while True:
values = read_temp()
hg.Program.Notify("DS18B20", str(values[0]))
time.sleep(5)
the read_temp() function is returning two values (array) with temperature celsius and fahrenheit, that was the problem.
Btw I'm attacching the updated program.
If this is working, then I'll add to the app a virtual sensor module, so it can be used like other hg modules.
g.
-
Working like a charm :D
If you can do the virtual module would be great :D
One more question, what you sugest, in my case i have three sensors, should i replicate this programs one, for each sensor or the virtual module can receive data for the three sensors, and change the program so it have parameters to set sensors id and sensor numbers?
-
Added user-definable virtual modules (default 3).
User must specify sensor ID in the module options popup (see screenshot).
Let me know it it's working.
g.
-
This is awsome!! Great work
Make the following changes.
line 33 changed to
lines = temp_raw(sensorid) #sensorid is missing in the function call
line 46 changed to
for n in range(1, sensorcount+1): #because range(1,3) returns only 2 numbers [1,2] and if we do sensorount+1 i get range (1,4) and the return is [1,2,3]
-
did you import the program? did you also disable previously imported scripts?
(sorry for silly questions =D)
Unfortunately cannot test much because I haven't got that temp sensor.
But the problem should be at line 52. It shouldn't get there if you didn't specify the sensorid in the module options, so it shouldn't give that error.
We can try surrounding the read_temp with a try..exept.
Let me know if this work.
g.
-
Gene now is working... i edit my post, with the fix i made to make it running without errors!
It's perfect now
-
I only want to know how can i modify somethings, for instance keep the time in the module the last update occur?
-
I am not sure to understand what you're asking.
Some more example please :)
g.
-
The module show temperatureC and TemperatureF, and i would like have some time of datetime stamp to know the last time the values are updated.
For instance if i disable the program (or for some reason stop working) the modules keep show the last values and we will not know if they are current values or not.
-
All right... there was missing code in the sensor widget. I added it.
To update copy the attacched sensor.json file to the /usr/local/bin/homegenie/html/pages/control/widgets/homegenie/generic/ folder.
Then refresh the browser page and the date should appear like the screenshot.
g.
-
HG is crash after some time, and the the program reports errors...
"Line 0, Column 0 (Code to Run):
Input string was not in the correct format"
-
Does it happen sometime when restarting the program or while it's running?
What do you mean that HG crash? Did you have to restart HG or just the program?
g.
-
i must start HG because it stops... i try to understand what happen because everything has working... but then when i go try the new *.json file hg has stopped...
I start up and the the one wire program not run anymore, and report errors when i try update the script
-
Do this have some type off cache? I remove the modules, i reset all hg and now i can't even run the first hgx you send me... all of them returns the same string error.
-
My bad, after chage the script i save and click run and i think that is the problem.. i do back and only then hit save... the script editor reports errors, but it is working again... let see if hg crash or no
-
:-[ Gene, the crash still occur, i can't identify why, but after some time homegenie stop working and i must start it again... before onewire program this don't happen
-
Looks like it is some issue related to mono / IronPython. I'll try updating IronPython libraries but this will require some time since latest IronLanguages release it is only available as source code.
Also I'll get one of these DS18B20 so I can make a real test.
By the way the same program can be written using C# so HG it would not crash.
Do you know how to translate the script code from Python to C#?
Cheers,
g.
-
Not really.. i would prefer python :)
However if you can point me to some examples where i can see how to do c# in hg i can try :)
-
I'm doing it.
Please test the attached C# script and let me know if the app reads temperature values correctly.
You have to change the sensorid from the code at line #41.
If this is working I'll complete the script to work as the python one.
Cheers,
g.
-
when try save the changes i get this
Line -16, Column 0 (Code to Run):
Metadata file `Microsoft.CSharp.dll' could not be found
-
Missing some dependency? How did you install HG?
I'm attacching the completed version of the program.
I guess you cannot update any C# program? Can you try creating just a new empty c# program and compile it?
g.
-
i download and install the rpi version, before i run the apt command that is in the docs
-
Mmm... that's strange...
We can work around this though.
Copy the precompiled app file to /usr/local/bin/homegenie/programs/ folder.
But you must change the number in the filename to match your imported program ID number.
After that, you just enable or restart the app.
Cheers,
g.
-
One more question.. what version of RPi SD card did you download?
g.
-
this file http://sourceforge.net/projects/homegenie/files/homegenie-beta_1.00.r403_all.deb/download (http://sourceforge.net/projects/homegenie/files/homegenie-beta_1.00.r403_all.deb/download)
-
The program is working now
-
glad to hear that :)
let me know if there are some improvements we can make to it.
Cheers,
g.
-
Ok i will
Next steps i will try and make a module to read same value in a webpage so i get the power consumption in watts
cheers
-
Gene,
Can you send me some directions how to start a module? python/javscript or even c# i have an arduino in my rpi so i need to read serial port and i even have a webpage to scrap so i can get the consumption energy. I try all day find a way but no success.
Thanks
-
Hi, all
After I follow the AdaFruit hardware install of the DS18B20, What needs to be done in HG?
Can't seem to get it to work. On Pin 22 on RPI. Using Pin 4 for the DHT-11, which takes long before it's first reading after a RPI reboot.
-
Hi Bitcraze,
did you try this app?
http://www.homegenie.it/forum/index.php?topic=351.msg2074#msg2074 (http://www.homegenie.it/forum/index.php?topic=351.msg2074#msg2074)
do not forget to load 1-wire modules first (either from a terminal or in /etc/modules):
modprobe w1-gpio
modprobe w1-therm
Cheers,
g.
-
Hi, Gene
Still no luck.
Does the DS18B20 work by default in R416, with 1-wire enabled, or should I:
modprobe w1-gpio
modprobe w1-therm
-
Hi, Gene
Should I also enable MCP3008, for this to work?
-
Hi, Gene
Ah, working great on GPIO 4! Have also managed to get working on GPIO 24, with and added entry in command.txt
1) Added this to startup file:
modprobe w1-gpio
modprobe w1-therm
2) Checked the ID
3) Entered the ID
Thanks so much Gene!
-
Hi there,
Is there a way to add more than 3 sensors ?
-
Hi StatX,
go to configuration, automation, devices and things, One-Wire Devices, change this value "Connected sensors number" (I tried with 5 sensor and work well) and restart.
then you can add the other sensors
My experience here: http://www.homegenie.it/forum/index.php?topic=423.msg2394#msg2394 (http://www.homegenie.it/forum/index.php?topic=423.msg2394#msg2394)
Marco
-
ok thank You for reply as soon as i will get more sensors i will shurley try it :)