« previous topic   next topic »
Pages: [1]   Go Down
Author Topic: using a different type of resistor for rotary encoder.....  (Read 502 times)
0 Members and 1 Guest are viewing this topic.
D.J.B
0
Offline Offline
Jr. Member
**
Karma: 0
Posts: 90
ARDUINO
View Profile
« on: July 21, 2011, 06:42:10 pm »
 Bigger Bigger Smaller Smaller Reset Reset
in the playground there is a link to using a dc motor as a rotary encoder...
LINK
http://christian.liljedahl.dk/guides/simple-rotary-encoder

... it talks about using a 15K resistor, could i use a different resistor or will it be a big difference??
Logged

floresta
Western New York, USA
Offline Offline
Faraday Member
**
Karma: 32
Posts: 4241
View Profile
« Reply #1 on: July 22, 2011, 07:58:08 am »
 Bigger Bigger Smaller Smaller Reset Reset
Quote
... it talks about using a 15K resistor, could i use a different resistor or will it be a big difference??

How 'different'  will your new resistor be.  How similar to his motor will yours be?  I'm sure a 12K or 18K will be no better or worse a choice than his 15K.  After all he did specify 10-20K above the picture.  I'm pretty sure that he didn't do any extensive calculations before he came up with that range of values either, it's more likely that he happened to have a 15K resistor handy and it worked with his motor.  I would be suspicious of the technical qualifications of someone who consistently refers to a potentiometer as a potmeter.

Don
Logged

Pages: [1]   Go Up
« previous topic   next topic »
Jump to: