RF Modules/VirtualWireLibrary/DallasOneWireLibrary

[tytower]

I wanted to get these modules transfering readings from my Freezer and Fridge using Dallas DS18B20 digital temp sensors. This is now working .
See the following posts for a zip file containing the .pde files for the Arduino IDE and the files can be read with any text editor.

[franklin97355]

It would help if you included links to the parts you are talking about and to the datasheets.

[tytower]

have modules from Oatley Electronics KST-TX01 433Mhz
http://secure.oatleyelectronics.com//pr ... 5b5683bb6b but they are much the same as Sparkfuns (Adafruit does not have them yet) which is here http://www.sparkfun.com/commerce/produc ... ts_id=8946

And the receiver is GD-V6C from GD Techway again from Oatley at which is one of two choices you can have with these transmitters at http://secure.oatleyelectronics.com//pr ... 8d4c164919

Important note
For 433Mhz use 170mm antenna (6 3/4 inches),bend the ant pins upward and replace with another pin if they break. Solder the antenna directly on to the pin. I am toying with using double sided tape to add a layer of aluminium foil tape across the bottom of the shield for a ground plane but I don't know if I can solder or stick a wire to the aluminium.
Power the transmitter with 12 V as with 6V it is as weak as ..
With 12V it goes 90ft and through 3 Masonry block walls
Putting the transmitter next to the computer while working on it often gives a loud interference burst as the chip transmits so you can ensure it is actually transmitting. If there is anything wrong with your message it simply will not transmit. Then its hard to tell what's happening.

[tytower]

Sorted see prior post

[tytower]

I noticed while I was doing this the Dallas library versions changed so this compiles onversion 3.00

If you have 3.1 then it needs to be changed for three names I think oneWire constant changes, getTemperatures() becomes requestTemperatures() and deviceCount() becomes getDeviceCount(). Simple function name changes only-see Dallas example "Multiple" or "Single" and change accordingly

The files might be available here
http://stigern.net/upload/download.php? ... 8b75a2b90a

[tytower]

You can also set and check the internal alarms in each device by adding in the following code


//set alarms
sensors.setHighAlarmTemp(Freezer, 0);
sensors.setLowAlarmTemp(Freezer, -17);
//sensors.setHighAlarmTemp(Fridge, 4);
//sensors.setLowAlarmTemp(Fridge, 1);

Serial.println("Freezer High = ");
Serial.println(sensors.getHighAlarmTemp(Freezer));
Serial.println("Freezer Low = ");
Serial.println(sensors.getLowAlarmTemp(Freezer));
Serial.println("Fridge High = ");
Serial.println(sensors.getHighAlarmTemp(Fridge));
Serial.println("Fridge Low = ");
Serial.println(sensors.getLowAlarmTemp(Fridge));


if (Serial.println(sensors.alarmSearch(Freezer)));//If these come back as 1 then the alarm has been triggered

if (Serial.println(sensors.alarmSearch(Fridge)));//If these come back as 1 then the alarm has been triggered