[PIC] Rotor controller indicator

Status
Not open for further replies.
F

fjpompeo

Advanced Member level 1
Joined
Nov 29, 2003
Messages
415
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,296
Location
Brazil
Activity points
3,042
Dear colleges,

I need a controller to my antenna's rotor or a pic with 36 digital input and 2 output in the antenna side and 36 output and 2 input in the station side and the connection using a two wire (possible but not necessary RS485 or any other..).

73,

Fernando - Call sign PU2PLL
 

Sort by date Sort by votes
So, you basically need something with 76 I/O. I'm not sure there are any reasonably priced off-the-shelf solutions with that much I/O (you don't mention voltage, current, speed or any other parameters).

If it was me, I would probably buy some inexpensive development board and design my own I/O board.
 

Upvote 0 Downvote
Hi,

To me it's not clear what you need.
Maybe you could tell a little more for what you need that much I/O.
A little sketch could help, too.

Klaus
 

Upvote 0 Downvote
I think, although not explained, the application is quite obvious: 36 * 10 degree antenna rotor position sensing, motor fwd/rev control. Without using IO expander or mux techniques, e.g. a 64 pin PIC18 can do at both ends of the control circuit.

Knowing a bit more about connected sensors and actors, we could suggest methods to reduce processor IO count.
 

Upvote 0 Downvote
Sounds like a job for lots of I2C port expanders and a small MCU but I agree with Barry and Klaus, what you ask for seems very excessive for a rotator controller. Please explain why so many inputs and outputs are needed.

Brian.
 

Upvote 0 Downvote
If the station side is essentially a LED position indicator with control buttons, you can use a 6x6 mux scheme.
 

Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…