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| Micro Controllers Discuss all aspects of micro controllers - building them, coding them, etc. All controllers are welcome - PIC, BASIC, Z8 Encore!, etc. |
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4th November 2009, 07:12 AM
| #1 |
 Digital Speedometer
Asalam o Alaikum... Dear All i want to make digital speedometer for my motrocycle Dayang 110-26 i want to know about the speed sensor .. which sensor i should use for speed sensing .. so that i read signal ..... | |
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4th November 2009, 07:34 AM
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or are you going to use this for actual use ? I would suggest optical/IR transmitter receiver with a disc having holes. measure the number of rays coming per second and divide it by total number of holes. This will give you Revolutions per second. Then calculate RPM | ||
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4th November 2009, 08:09 AM
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now plz can you tell me where should i install IR transmitter Receiver on my front tyre ? | ||
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4th November 2009, 05:22 PM
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| I would advise against the optical sensor
as the sensor will get dirt in it thus causing false readings. As I understand it most use a hall effect sensor. this uses a magnet attached to the wheel or other rotating object. determine circumference of wheel number of rotations for say 10 feet then calculate the time. there are electronic speedometers on Ebay as to build an accurate unit a micro-controller is suggested. | |
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5th November 2009, 05:11 AM
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5th November 2009, 07:23 AM
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5th November 2009, 11:44 AM
| #7 |
| depends on how far you want to go
just google bike computer or bike speedometer. then hall effect switches. here is a couple of links Simple Bike Computer HALL-EFFECT SWITCHES - Circuit Diagram - Forum - SeekIC.com the bike computer I think uses optical sensors but a hall effect sensor could be incorporated very easy. the second link diecribes a hall effect switch arrangement. reed switches could be used but are not as reliable or IMO as fast as a hall effect sensoe. look at automotive ingition systems - they mostly use a hall effect type sensor. good luck | |
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| Tags |
| digital, speedometer |
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