Automatic Toilet Flusher

[Techbuilder]

I got it to work!!!!!!!!!

Although I got to adjust the ms because it only moves like 3mm but it should be done soon!


Ps I found out what was wrong

The servo was not connected right to the pic
I had the postive going to the pic pin and the signal was going to positive
I got the new servo in and now all I have todo is make some adjustments in the software

So you will here from me soon

[Techbuilder]

Can't figure out the delay for the servo

Here's my program

IRLED1 var PORTB.0
Servo var PORTB.1

TRISB=%00000001
Loop:
If IRLED1 =1 then
Pulsout Servo,110
pause 10
Pulsout Servo,150
else
Pulsout Servo,110
endif
Goto Loop

End

I Want it to move the servo to the right to it's most and delay for two seconds and
then come back to center.

If anyone can help me out
it would be much appreciated

[Bruce]

Does this work?

x var byte
IRLED1 var PORTB.0
Servo var PORTB.1

PORTB = 0 ' setup for high-going pulsout
TRISB=%00000001

Loop:
 If IRLED1 = 1 then
   goto Flush ' flush
 else           ' else center
  for x = 1 to 20
    pulsout Servo,150
    pause 20
  next x
 endif
  goto Loop

Flush:
  for x = 1 to 20
   Pulsout Servo,200
   pause 20
  next x
  pause 2000
  Goto Loop

[Techbuilder]

Thanks for the code bruce
I appreciate it

Although it didn't work
instead of not moving enough like my code
this code twitches every two seconds unless it makes contact which it just go's to center
and the twitches are just a little more then mine was at last time

[Luciano]

Hi,

(A long-lasting project).

Your room mates will very soon say:
OK, we will flush the toilet but you turn off the light at night so we can sleep!

Seriously, what they think about your efforts?

Best regards,

Luciano

[sayzer]

Hi,

(A long-lasting project).

Your room mates will very soon say:
OK, we will flush the toilet but you turn off the light at night so we can sleep!

Seriously, what they think about your efforts?

Best regards,

Luciano

Luciano,

I think they will soon say, "let us help you with your Automatic Toilet Flusher Project".

[Techbuilder]

lol well I have a sleeping disorder so they are used to me up

I just want this thing to work.



I will get it though

[Bruce]

Funny that should work. Here's a few things to check.

Make sure you're using a separate power supply for your servo, and you have a common ground between them. Running a servo from your controller power supply can cause problems if you aren't using a hefty bench type power supply with a lot of filtering to remove motor noise.

Make sure you're using the correct voltage for your servo. These normally run on 4.8 to 6V. If you're trying to operate your servo from 9V that may be a problem. Most hobby type servos can't handle 9V, and a 5V control pulse from the PIC is going to look pretty weak to a servo operating at 9V.

I tested the above code example, and it works as expected with a Hitec HS311 servo operating at 5V with a 16F627. Note some servos will move 90 degrees right or left, so you can tweak the value in the Flush routine between 200 to 250 to extend the rotation range.

My HS311 moves full right with 250, and centers with 150.

[Techbuilder]

Funny that should work. Here's a few things to check.

Make sure you're using a separate power supply for your servo, and you have a common ground between them. Running a servo from your controller power supply can cause problems if you aren't using a hefty bench type power supply with a lot of filtering to remove motor noise.

Yep I am using a separate power supply for both and each is filtered

Make sure you're using the correct voltage for your servo. These normally run on 4.8 to 6V. If you're trying to operate your servo from 9V that may be a problem. Most hobby type servos can't handle 9V, and a 5V control pulse from the PIC is going to look pretty weak to a servo operating at 9V.

Yep I used 5volts and I even tried it with 6

I tested the above code example, and it works as expected with a Hitec HS311 servo operating at 5V with a 16F627. Note some servos will move 90 degrees right or left, so you can tweak the value in the Flush routine between 200 to 250 to extend the rotation range.

My HS311 moves full right with 250, and centers with 150.

I am using a hi-tec HS-322HD

And I used another servo which was a futaba S3003
but it was modified for continues rotation but it was rotating in 90% degree section
but that was when it was not in contact but when it was in contact it didn't move just like the hs-322HD

[mackrackit]

but that was when it was not in contact but when it was in contact it didn't move just like the hs-322HD

You mean in contact with the handle? If so, maybe the servo is not strong enough?

[Techbuilder]

You mean in contact with the handle? If so, maybe the servo is not strong enough?

No contact with the IR led


Although I figured out that I have to modify the servo to do 180 degrees
because mine only does 60 degrees, still doesn't explain why it is only going off when it is not in contact with the IR led.

[Techbuilder]

Actually if I spin it by hand it spins enough
so I don't believe that's the problem.

[Techbuilder]

It is not connected
the only thing that it is connected is to the IR receiver which it needs to be

[JohnnyV]

Hey everyone, I've been working on a very similar project (also my first PIC only project), before I even discovered this thread. I'm having a problem getting my servo to move 90 degrees. I'm using a parallax standard servo (left over from my Basic Stamp days), which is based on a futabu (http://www.parallax.com/dl/docs/prod...s/stdservo.pdf).

I tried using the code that Bruce posted, but the servo only moves about 10 degrees each time the move loop is called. I also tried using a modified version of the BS2 code in the pdf I linked, but I get the same result. How can I get my servo to move the full 90 degrees?

Here is the code I'm using:

@ __config _INTOSC_OSC_NOCLKOUT &_WDT_ON &_PWRTE_ON &_MCLRE_OFF &_BODEN_ON &_CP_OFF &_DATA_CP_OFF &_MCLRE_OFF


servo1 var Porta.0
x var byte

		low servo1
		HIGH PORTB.3
	
loop:	pause 500
		low portb.3
		pause 500
		high portb.3
		GOTO move
		pause 2000
		low portb.3
		GOTO loop

move:	for x = 200 to 1200
   		pulsout servo1,x
   		pause 18
		next x
  		pause 2000
  		return

I have the LED blink so I can be sure that I know the program is working properly and I can tell when the servo should be moving.

Thanks for the help in advance!

BTW, I'm making the project because I have a cat that is toilet trained, not because room mates don't flush

[skimask]

And the PIC you are using is ______________________(fill in the blank).
Kinda handy to have that sort of info, dontcha think?

Servo pulse width is GENERALLY centered around 1.5ms...which means that there's probably something wrong here:

move:	for x = 200 to 1200

[JohnnyV]

I'm using a 16F627A

and yes, I've tried changing those numbers and I've tried using the numbers that Bruce posted, but I still get the same result regardless. I've also tried using a different servo (another parallax one)

[skimask]

I'm using a 16F627A
and yes, I've tried changing those numbers and I've tried using the numbers that Bruce posted, but I still get the same result regardless. I've also tried using a different servo (another parallax one)

So, you're running at 4Mhz (INTOSC). The PBP manual tells us that at 4Mhz, pulsout has a granularity of 10us. Your loop runs from 200 to 1200, meaning 2000us (2ms) to 1200 (12ms). A bit out of the range of a normal servo ya think? Unless you've got one of the oddball ones...

Also, try turning off the WDT and Brown-Out reset for grins... You might be killing the battery voltage when the servo tries to move and causing a reset.

[Bruce]

Use GOSUB VS GOTO if the routine you're going to uses RETURN to get back.

Disable onboard comparators with CMCON=7 before trying to use a pin that
has the comparator feature.

Give this a shot;

@ __config _INTOSC_OSC_NOCLKOUT &_WDT_ON &_PWRTE_ON &_MCLRE_OFF &_BODEN_ON &_CP_OFF &_DATA_CP_OFF &_MCLRE_OFF


servo1 var Porta.0
x var byte
CMCON=7 ' <-- disable analog comparators

    low servo1
    HIGH PORTB.3
	
loop:	
    pause 500
    low portb.3
    pause 500
    high portb.3
    GOSUB move   ' <-- use GOSUB VS GOTO
    pause 2000
    low portb.3
    GOTO loop

move:
    for x = 200 to 100 STEP -1 ' 2mS to 1mS pulse
      pulsout servo1,x
      pause 18
    next x
    pause 2000
  		
    for x = 100 to 200 ' 1mS to 2mS pulse
      pulsout servo1,x
      pause 18
    next x
    pause 2000
    return
  		
   END

This should cycle your servo from one side to the other. Tested with a
Parallax servo.

[JohnnyV]

Bruce, works beautifully, thank you!