Timeline for analogRead DC Motor - Negative value
Current License: CC BY-SA 3.0
14 events
| when toggle format | what | by | license | comment | |
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| Jan 3, 2017 at 8:09 | history | bumped | Community Bot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Dec 4, 2016 at 7:22 | history | bumped | Community Bot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Nov 4, 2016 at 5:51 | history | bumped | Community Bot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Oct 5, 2016 at 5:04 | history | bumped | Community Bot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Sep 5, 2016 at 0:26 | answer | added | Milliways | timeline score: 1 | |
| Sep 4, 2016 at 13:15 | comment | added | PeeS | @Gerben, thank you - that makes sense to allow the motor to spin in only one direction. All i really need is to show kids if there was wind or not and how 'big' it was - no details, just a fancy color graph. Let me try that, thank you all for your help. | |
| Sep 4, 2016 at 12:25 | comment | added | Gerben | @qwerty10 some do, but not the one shown in the picture. | |
| Sep 4, 2016 at 10:19 | comment | added | RS2322016 | Some anemometers do measure direction of wind e.g. see wikipedia | |
| Sep 4, 2016 at 9:52 | comment | added | Gerben | anemometers only rotate in one direction, because of the shape of the cups. PS you might want to add a resistor between the motor and the Arduino pin, to prevent damage if the voltage is above 5V or below 0V. Something like 10kOhm. | |
| Sep 4, 2016 at 9:06 | answer | added | KIIV | timeline score: 1 | |
| Sep 4, 2016 at 9:03 | comment | added | RS2322016 | What you're doing is a bit like using a DC motor as an AC generator. So to convert a negative voltage to a positive on in this case you can use a rectifier circuit (its basically an arrangement of 4 suitable diodes) or buy it ready made. The rectifier will make the voltage positive all the time which is what you seem to want-though youll probably need another circuit to sense the direction of the wind. A brushless DC motor is probably a good choice for making an motor based anemometer. | |
| S Sep 4, 2016 at 9:02 | history | suggested | user24204 | CC BY-SA 3.0 |
improved formatting
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| Sep 4, 2016 at 8:40 | review | Suggested edits | |||
| S Sep 4, 2016 at 9:02 | |||||
| Sep 4, 2016 at 8:37 | history | asked | PeeS | CC BY-SA 3.0 |