![\"\"](\"https:\/\/i0.wp.com\/nerdiy.de\/wp-content\/uploads\/2022\/01\/www.nerdiy.de-howto-anemosens-ein-3d-gedrucktes-anemometer-windsensor-bauen-20201022-174856.jpg?ssl=1\")
<\/a><\/figure>I then printed out and tested the design shown on the left.<\/p>\n\n\n\n
Unfortunately, this design never made it past the prototype phase. The limitations of the FDM printing process were somewhat problematic here. Especially when printing overhanging structures, the tooling was often so poor that the parts did not fit together properly.<\/p>\n<\/div><\/div>\n\n\n\n
<\/p>\n\n\n\n
So I put the project on hold again for the time being. But when I started developing the second version of a 3D printable wind turbine<\/a><\/em><\/strong> the topic of an anemometer came back to my desk. This time I wanted to build a wind turbine with electronic wind tracking. This means that WinDIY_2 (the name of the wind turbine) should not have a wind vane that automatically aligns the nacelle with the wind. Instead, the nacelle should be turned into the wind via a servomotor. For this to work, the electronics must of course know the current wind direction. Of course, this only works if the electronics are able to measure the current wind direction. You probably already know where this is going: So the idea was born (again) to design a 3D printable anemometer.<\/p>\n\n\n\n <\/p>\n\n\n\n At this point, my \"machine park\" had already grown somewhat. In addition to my FDM printer, I was now also able to use an SLA printer. The practical thing about this is that you can also print overhanging structures very well with SLA printers and generally in a much higher resolution than with FDM printers. So from the production side, almost all concerns were dispelled \ud83d\ude42<\/p>\n\n\n\n <\/p>\n\n\n\n For integration into WinDIY_2, the anemometer should be mounted on a small bracket on the nacelle of the wind turbine.<\/p>\n\n\n\n The anemometer therefore had to be as compact as possible to avoid unnecessary weight at this point (and also because it simply looks cooler. \ud83d\ude42 )<\/p>\n<\/div><\/div>\n\n\n\n <\/p>\n\n\n\n The first design still looked like the one shown in the photo. A little \"chunky\" and still with a removable tip. <\/p>\n\n\n\n Unfortunately still a little too big for the design of WinDIY_2. So it went back to the desk.<\/p>\n<\/div><\/div>\n\n\n\n <\/p>\n\n\n\n After a few more drafts, the design shown on the left eventually emerged.<\/p>\n\n\n\n A very compact anemometer with the following data:<\/p>\n\n\n\n This design consists of a few parts which can be printed on a standard SLA printer.<\/p>\n<\/div><\/div>\n\n\n\n <\/p>\n\n\n\n <\/p>\n\n\n\n In order to be able to evaluate the measured values for wind speed and wind direction, I have created a small sensor board that can be integrated into the base in such a way that the sensors are positioned in exactly the right places. The sensor board can then be connected to an ESP32 via an optional additional board (the Anemosens_MCU PCB). The data can then be processed or stored in various ways.<\/p>\n\n\n\n Various interfaces and an SD card slot are available on the Anemosens_MCU board. Further information about this board can also be found under the following link.<\/p>\n\n\n\n<\/a><\/figure><\/a><\/figure><\/a><\/figure>