According to any of the series datasheets, or see attached pic which is from the datasheet, there's a detent on phase A OFFs and ONs.
Yet mine only has a detent where A is OFF.
Unfortunately my supplier is silent on which exact EC11 they sell, and I can't deduce which it is from here since mine has 20 detents and isn't listed.
Maybe mine's from a different sub-species of EC11.
No biggy, just curious if anyone knows about these encoders?
(I have, jbtw, written a sketch to de-code these things from scratch without interrupts. Interesting exercise to see the pattern of OFFs and ONs across the two pins.)
I have found that encoders made by the company Alps tend to have one detent per sequence and those made by Bourns tend to have two. So your results come as no surprise to me.
Grumpy_Mike:
I have found that encoders made by the company Alps tend to have one detent per sequence and those made by Bourns tend to have two. So your results come as no surprise to me.
Thanks Mike- actually, the Bourns website does show a 20 detent, 20 pulse model so maybe that's what I've got.
edit.... as an interesting aside, another supplier here in Johannesburg bills these EC11s as "encoder / dig pot"...
another supplier here in Johannesburg bills these EC11s as "encoder / dig pot"
Yes that is common, because they can be used as pot replacements in audio systems. The volume control on my car radio is an optical encoder not a real pot.
Grumpy_Mike:
I have found that encoders made by the company Alps tend to have one detent per sequence and those made by Bourns tend to have two. So your results come as no surprise to me.
Really? The Bourns encoders I have (PEC16 series) have one detent per sequence.
Yes that is common, because they can be used as pot replacements in audio systems. The volume control on my car radio is an optical encoder not a real pot.
Is that really common? It seems like a gross mislabeling. You can't use an encoder as a direct replacement for a pot, it needs additional control circuitry. Unless there's encoder / digipot combinations that can be used as direct pot replacements.
For the Alps encoders I have used, the datasheet shows that the detent position is exactly aligned with one of the transitions. This is the exact opposite of what I want- the detent position needs to be stable. The Bourns encoders have the detent position midway between two transitions, which is far more sensible. So i never use Alps encoders, I always use Bourns.
