by Yoctopuce, published
Anemometer: allows you the estimate wind speed though USB when used with a Yocto-Knob.
These are plastic parts needed to build an USB anemometer. These are meant to be used with a Yocto-knob ( www.yoctopuce.com/EN/products/usb-sensors/yocto-knob ), but any electronics able to count pulses, such as Raspberry PI or Arduino, would do as well. You will find here instructions for assembly. Details about electronics and programming can be found on our blog: www.yoctopuce.com/EN/article/how-to-measure-wind-part-1
This thing is assembled using screws and brass threaded inserts. This allows to assemble and disassemble it quickly and easily. Moreover, the final assembly is rock solid.
You will need some non-printable hardware to build this thing.
- A 3mm led as powerful as possible, e.g. L7104SRC/J from Kingbright
- A 3mm phototransistor, e.g. : SFH 310-2/3 from OSRAM
- A 150 ohms resistor
- Electric wire
- A Yocto-Knob or equivalent
- A 3mm axle
- Two 3x10x4 stainless bearing ex: xirosÂ® B180 from www.igus.com
- M3 and M2.5 threaded inserts, such as BN 1036 - DIN 16903 B from www.bossard.com
- M3 and M2.5 screws
- M3 headless screws
- Optionally, a 16mm rod and a PG.M0.4GL.LN connector from LEMO.
-Various screw drivers
Solder the wire on both LED and phototransitor, the short legs are the minus. Then glue them in the led holders, use a glue gun.
Place the threaded inserts in all the parts with a solder iron, All are 3mm inserts, except the one for the led holders.
Screw the LED holders on body top and bottom parts. Place the bearings.
Force the sensor wheel on the axle and place it on the bottom part.
Mount the body, make sure the sensor wheel turns freely with no friction, if needed use washers.
Assemble the rotor, notice the headless screws used to lock it on the axle. You can make spacers from a brass 3mm tube, and force them into to the hub parts to make sure plastic wont bend when you tighten the headless screws.
Assemble the body and the rotor. Optionally you can use the support. The support is designed to mount the anemometer on a 16mm rod and connect it with a PG.M0.4GL.LN connector
Assembly is complete, now you need to wire it and to calibrate it. For more info on the electronics and programming, see www.yoctopuce.com/EN/article/how-to-measure-wind-part-1
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Anemometer by Yoctopuce is licensed under the Creative Commons - Attribution - Share Alike license.
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