POV without Hall effect sensor

SpokePOV kit for bikes

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
Locked
glenneaux
 
Posts: 3
Joined: Wed Jan 03, 2007 8:56 pm

POV without Hall effect sensor

Post by glenneaux »

What are some possible solutions for achieving POV without the hall effect sensor?

IE SpokePOV without the hall effect sensor, and by extension NO refernece of its rotation relative to the bike.

The only solution/idea i can come up with is using an accelerometer (such as an ADXL202) in a tilt sensor configuration. As the wheel rotates the force of gravity will change from one axis to the other. This will give the SpokePOV a potation position in any angle.

Any takers?

bobpaul
 
Posts: 2
Joined: Tue Jan 09, 2007 12:13 am

Post by bobpaul »

I'd go with an inclinometer. These provide you the actual angle of tilt, and are usually about the same price as an accelerometer. Here's a good one I used in a balancing robot:
http://www.digikey.com/scripts/DkSearch ... 78&Site=US

Sometimes you can beg the manufacturer for free samples.

Just note that it's -90 to 90, so on a bike it will overflow, ie if using analog 0v-5v-0v is 1 revolution. This one also has a built in ADC for digital output.

bigfoot_13
 
Posts: 12
Joined: Wed Dec 27, 2006 11:31 am

Post by bigfoot_13 »

I'm considering if the Hall effect senior can be replaced by Reed Switches?

Locked
Please be positive and constructive with your questions and comments.

Return to “SpokePOV (discontinued)”