Prop-2 11 I/o's

[gadget-evilusions]

I would like someone to confirm my conclusion:

If I need 7 potentiometers, 3 outs, and 1 trigger in, that would be 11 I/O's and my best option would be a prop-2? I am going to build a 3 output 7 stage timer (delay after trigger, 1st relay on, delay, 2nd relay on, delay, 3rd relay on, delay before trigger allowed). I want to be able to adjust all 7 timing functions on the fly using the POTs for analog input.

[JackMan]

Are the pots gonna delay the relays? Are there only 3 relays? What are the other 4 pots for?

[bsnut]

You are right on your conclusion by using the Prop-2. Since you will be using only 11 pins (I/O) out of 16 pin (I/O).

When setting up your program , it wouldn't be a bad idea to when looking at these7 pots to have them in their own subroutines. This would make your program easy to read.

[JonnyMac]

I'd be inclined to pull the ULN for the lower pin group and use pins 0..7 for pots. You could use a subroutine like this.

' Set potPin to 0..7 before calling

Read_Pot:
  HIGH potPin
  PAUSE 1
  RCTIME potPin, 1, potValue
  RETURN

It would require two variables: potPin (byte) and potValue (word)