Substitute for a reed switch?

The obvious question -

Why don't you want to use a reed switch ? They are simple, cheap and utterly reliable

They are simple, cheap and utterly reliable

Dunno what reliable reed switches you have - they're simple, cheap, made of glass, mechanical switches which need debouncing.

Hall effect switches are almost as cheap and are rather more reliable.

made of glass

Fragile. I've replaced a few that were not in the correct "environment" for a GLASS based device.

well I found a good supplier (bgmicro) and their shipping is great so I might just get some reed switches from them after all and maybe a hall effect sensor.

Gary about the riders legs, who said I will be measuring the riders leg speed? Cause I'll just be measuring the wheel revolutions.

Now, use your head before answering. It is an option. But if you don't know that you might need it, then you probably don't.
That would give you something you don't think at a moment, one extra information.

Cheers,
Kari

mowcius:

They are simple, cheap and utterly reliable

Dunno what reliable reed switches you have - they're simple, cheap, made of glass, mechanical switches which need debouncing.

Hall effect switches are almost as cheap and are rather more reliable.

But what if he wants to pedel other then due north. ?

But what if he wants to pedel other then due north. ?

Lefty you make me smile :slight_smile:

mowcius:

But what if he wants to pedel other then due north. ?

Lefty you make me smile :slight_smile:

Great, does that mean you got over that revolution (1776) thing between us. :wink:

Lefty

Great, does that mean you got over that revolution (1776) thing between us.

That what thing? Did we have a thing going on? That thing? :stuck_out_tongue:

A ABS VR-sensor rescued from a scrapped car maybe ?

retrolefty:

mowcius:

But what if he wants to pedel other then due north. ?

Lefty you make me smile :slight_smile:

Great, does that mean you got over that revolution (1776) thing between us. :wink:

Lefty

We consider you our wife, we just let you think you got the upper hand :wink:

Okay I found BGmicro has a good price on reed switches + shipping. Does anyone know of any cheaper places to buy reed switches?

Ebay probably.

Hall effect sensors would be a better buy.. Much more reliable, better detection at speed and much less prone to smashing.

I would use hall. Reed is old fashion...

Cheers,
Kari

Reed is old fashion...

Really, I thought 80s was old fashion :smiley:

mowcius:

Reed is old fashion...

Really, I thought 80s was old fashion :smiley:

Don't say that, all good things (not people) are made in 80s.
Second thought, that applies to music only... and that's only my opinion. No offence sir!

Cheers,
Kari

Oh I like some 80s music.

mowcius:
Oh I like some 80s music.

Then we are doing just fine! You never know...
Oops, off topic.... back to original subject.

How about inductive pickups? They creat sine wave, and needs pulse wheel, maybe opamp... but they are also sometimes used in these.

Cheers,
Kari