19-08-2021, 00:11
General Usage & Assembling Guide
1 - Setting the embedded Solar Irradiance / UV Index interface
1.1 Measuring Solar Radiation
The Solar Radiation / UV interface can be used with commercially available silicon photodiode pyranometers, provided their output voltage does not exceed 1.1V, for example the Apogee SP-110 Pyranometer. Although much cheaper than a professional thermopile pyranometer, commercial silicon photodiode pyranometers are still expensive, probably costing far more than the rest of the weather station combined. For this reason the WeatherDuino project is primarily designed to use a simple solar sensor based on a design by Charles G. Wright which uses a silicon photovoltaic cell, see Measuring Solar Radiation
Instructions below apply when using a 2Volt - 120mA, mini solar panel (please don't ask for support to other types of mini solar panels).
R14* = 1 Ohm Metal Film, 1%
RV1 = Adjust to 2.7K
Using those values your solar irradiance sensor is able to give you readings up to 1500 W/m2, with considerable precision, however for better results further calibration, by slightly adjusting RV1, is recommended.
Under ideal conditions (a cloudless day, around noon in mid-summer) the solar irradiance measured by the WeatherDuino solar sensor should be similar to the theoretical maximum.
The theoretical maximum solar irradiance for any location at any day of the year can be found using the Apogee Clear Sky Calculator.
If you intend to use the Apogee SP-110 Pyranometer as solar irradiance sensor, then R14* must not be installed.
1.2 Measuring UV Index
Instructions below apply when using the UVM-30A UV sensor.
RV2 = Adjust to maximum value (10K Ohm)
RV3 = Adjust to minimum value (0 - 100 Ohm)
If you intend to use the VEML6075 as UV sensor, then RV2 and RV3 don't need to be installed.
2 - The JP1 jumper
The JP1 jumper must be installed only when using a FineOfset wind vane.
Example of a FineOfset wind vane, sold under several brands.
With any other type of supported analog wind vanes (like Davis 6410 or 7911), JP1 should not be installed.
For a complete list of Weather Instruments supported by WeatherDuino, please refer to this page: https://wiki.weatherduino.com/supported_...nstruments
3 - LoRa or OOK radio
The transmitter can operate with LoRa or OOK radios. Depending on which mode you will intend to operate your transmitter, there are some components that you may decide not install.
3.1 Operating in LoRa mode
OOK radio, VR2 (78L09F), C4 and C5 don't need to be installed
3.2 Operating in OOK mode
LoRa radio, IC1 and C2 don't need to be installed.
3.3 Radio Select Shunt
Depending on operating mode (LoRa or OOK) there is an small shunt (RCS) that should be done using a drop of solder.
1 - Setting the embedded Solar Irradiance / UV Index interface
1.1 Measuring Solar Radiation
The Solar Radiation / UV interface can be used with commercially available silicon photodiode pyranometers, provided their output voltage does not exceed 1.1V, for example the Apogee SP-110 Pyranometer. Although much cheaper than a professional thermopile pyranometer, commercial silicon photodiode pyranometers are still expensive, probably costing far more than the rest of the weather station combined. For this reason the WeatherDuino project is primarily designed to use a simple solar sensor based on a design by Charles G. Wright which uses a silicon photovoltaic cell, see Measuring Solar Radiation
Instructions below apply when using a 2Volt - 120mA, mini solar panel (please don't ask for support to other types of mini solar panels).
R14* = 1 Ohm Metal Film, 1%
RV1 = Adjust to 2.7K
Using those values your solar irradiance sensor is able to give you readings up to 1500 W/m2, with considerable precision, however for better results further calibration, by slightly adjusting RV1, is recommended.
Under ideal conditions (a cloudless day, around noon in mid-summer) the solar irradiance measured by the WeatherDuino solar sensor should be similar to the theoretical maximum.
The theoretical maximum solar irradiance for any location at any day of the year can be found using the Apogee Clear Sky Calculator.
If you intend to use the Apogee SP-110 Pyranometer as solar irradiance sensor, then R14* must not be installed.
1.2 Measuring UV Index
Instructions below apply when using the UVM-30A UV sensor.
RV2 = Adjust to maximum value (10K Ohm)
RV3 = Adjust to minimum value (0 - 100 Ohm)
If you intend to use the VEML6075 as UV sensor, then RV2 and RV3 don't need to be installed.
2 - The JP1 jumper
The JP1 jumper must be installed only when using a FineOfset wind vane.
Example of a FineOfset wind vane, sold under several brands.
With any other type of supported analog wind vanes (like Davis 6410 or 7911), JP1 should not be installed.
For a complete list of Weather Instruments supported by WeatherDuino, please refer to this page: https://wiki.weatherduino.com/supported_...nstruments
3 - LoRa or OOK radio
The transmitter can operate with LoRa or OOK radios. Depending on which mode you will intend to operate your transmitter, there are some components that you may decide not install.
3.1 Operating in LoRa mode
OOK radio, VR2 (78L09F), C4 and C5 don't need to be installed
3.2 Operating in OOK mode
LoRa radio, IC1 and C2 don't need to be installed.
3.3 Radio Select Shunt
Depending on operating mode (LoRa or OOK) there is an small shunt (RCS) that should be done using a drop of solder.
- For LoRa, put a drop of solder between the right and centre pads.
- For OOK, put a drop of solder between the left and centre pads.