Converting to Illuminance (lux)
The output of the waspmote to the database is a voltage reading of the sensor. All the waspmote types have a LDR sensor but note that the conversion method differs between Type A and Type B,C since the supply voltage differs.
Step 1. Determine board type and voltage supply to sensor:
Step 2. Convert to kiloohms R = 10k * ( (Vcc- Vout) / Vout )
Step 3. Compare to sensor response graph to match resistance reading to lux, taking into account the spectral response of the sensor. See notes.
Measurement of 1.97v is observed from the databases on a Type B board.