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Expected voltage output vs. temperature:
T(C). V_temp output
-10.0000 0.2040
-9.0000 0.2236
-8.0000 0.2432
-7.0000 0.2628
-6.0000 0.2824
-5.0000 0.3020
-4.0000 0.3216
-3.0000 0.3412
-2.0000 0.3608
-1.0000 0.3804
0 0.4000
1.0000 0.4196
2.0000 0.4392
3.0000 0.4588
4.0000 0.4784
5.0000 0.4980
6.0000 0.5176
7.0000 0.5372
8.0000 0.5568
9.0000 0.5764
10.0000 0.5960
11.0000 0.6156
12.0000 0.6352
13.0000 0.6548
14.0000 0.6744
15.0000 0.6940
16.0000 0.7136
17.0000 0.7332
18.0000 0.7528
19.0000 0.7724
20.0000 0.7920
21.0000 0.8116
22.0000 0.8312
23.0000 0.8508
24.0000 0.8704
25.0000 0.8900
Output of wind sensor goes from 0 to 3.3 Volts, nonlinear response.
Software:
We want to use an array of 8 of these (ideally) in the of dome with two quantities measured per device. That means we need a 16-channel A/D converter, running at 16 bits. LabJack T7-Pro is one option. Let's start with that.
Need to store data at one reading per second, perhaps averaging over multiple readings. It would be nice to provide a panel with windspeeds,see for example https://pi-plates.com/displaying-data-with-a-virtual-meter/
Parts List:
| item | vendor | part number | notes |
|---|---|---|---|
| sensor | Modern Device | wind sensor rev P | https://moderndevice.com/products/wind-sensor-rev-p |
| carbon fiber tube, 18mm inner diameter | Amazon | https://www.amazon.com/gp/product/B07DH95ZNJ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 | |
| right angle header pins | Amazon | https://www.amazon.com/gp/product/B07BRZC6C6/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 | |
| DB-9 connector for sensor end | https://www.amazon.com/gp/product/B081GJR1MN/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 | ||
| DB-9 Male to Female cables, various lengths | |||
| mounting clamp | Amazon | https://www.amazon.com/gp/product/B07S1S4H19/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 | |
| DB-9 Male breakout connector | Amazon | ||
| Power supply, 12V 1 Amp | |||
| A/D converter | |||
| Mac Mini computer | |||
| mouse | |||
| keyboard | |||
| monitor | |||
| connector panel for computer end | |||
to do:
check type of connector on sensor end- pin or socket?
wire up one and test it with voltmeter
find DB9 break out connectors
get mac mini running
software design
design panel/enclosure and submit to shop.