[oopic] Reed switch help

Hi,

i was thinking that i could build a speedometer
using the ospeedometer-object.
I have the reed-switch, but how big resistor should i use?
I found one 150 ohm and one 20 ohm, so is 170 ohm enough?
It should let trough 29 mah on 5 volts..

Thanks

------------------------------------

Yahoo! Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/oopic/

<*> Your email settings:
Individual Email | Traditional

<*> To change settings online go to:
http://groups.yahoo.com/group/oopic/join
(Yahoo! ID required)

<*> To change settings via email:
mailto:oopic-digest@yahoogroups.com
mailto:oopic-fullfeatured@yahoogroups.com

<*> To unsubscribe from this group, send an email to:
oopic-unsubscribe@yahoogroups.com

<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/