Posts tagged ‘sensor’

UV index sensor with RS485 interface

This is another sensor in weather-sensor series. It is based on silabs Si1133.

Schematic:

uvindexsch

Si1133 Sensor schematic with RS485 interface

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Affordable pluviometer part 2 – strain gauge measurements

Affordable precision pluviometer PART 1 (introduction and construction) is here.

Here are first analog measurements of the affordable precision pluviometer:

mL uV uV/mL
0 550
10 568
30 606 1.87
50 643 1.86
100 736 1.86
200 924 1.87
300 1109 1.86
400 1296 1.87
500 1483 1.87
600 1672 1.87
650 1762 1.86
700 1853 1.86
750 1949 1.87

The measurement setup was: measuring graduated cylinder (4) strain gauge sensor (3) from kitchen scale, power suuply (2) and digital multimeter (1):

meas1

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