>
> Hi everyone, hope everything is going well.
>
> I just have a quick question about an OOPic i just recieved and an
> error i am recieving. I wanted to make sure the OOPic was operating
> properly before i really started using it so i setup the test
program
> in Ch. 2 of OOPic's manual (the one with the LED that makes the LED
> flash. made up od just a resistor and LED). Im using the OOPic 6
> compiler with an OOPIC III+ w/ version C.1.1+, a parallel
programming
> cable and a 9v battery hookup.
>
> When i compile the program i get an error:
> "The I2C Bus Clock Status line reported a logic state of zero when
a
> logic 1 was expected. This could be caused by one of the following.
> The was no, or not enough, voltage powering the oopic.
> The i2c clock line is shorted to ground on the oopic or in the
cable.
> The i2c clock status line is shorted to ground or in the cable
> Another i2c master is controlling the I2C bus
>
> I removed the led and resistor and also removed all usb device form
my
> computer (except for the reviever for my wireless keyboard/mouse)
and
> tried to compile and got the same issue. Checked the
troubleshooting on
> OOPics website. Between pins V+ and G i get 9v. Between pins +5v
and G
> i get 1.51v......shouldnt that be +5? I contacted the company who i
> purchased it from and they said it sounds like i have a cable issue
and
> should look into it. Do you guys have any suggestions. Id really
> appreciate any ionput you guys have. Does this sound like a fried
> voltage regulator, or do you think it is a problem with the cable?
>
> Thanks alot guys, take care
>
> -Pat
>
There's not much doubt the voltage regulator is fried. That small
voltage regulator on the S board won't take much abuse. Normally the
regulator is fried instantly when a battery is connected backwards.
Overcurrent events also will take it out. Other than an RS232
adapter and a couple of LEDs, provide a separate 5V power source for
all of the things attached to the S board.
A replacement regulator is $0.73
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?
name=LM78L05ACZNS-ND Unfortunately, unless you buy $25 worth of
stuff, there is a $5 handling charge.
When you mention USB and parallel cable in the same thread, I get
nervous. Were you trying to use some kind of USB->parallel cable or
does your PC have a real parallel port?
You really don't want to use the parallel programming method if you
can avoid it. If you have the S board (likely) then an RS232 adapter
and a serial cable is a better way to go. I prefer this one:
http://www.pololu.com/products/pololu/0126/
You can use a USB-
>Serial cable with this gadget if your PC lacks a real serial port.
When you get the gadget, post back and I can help you get it wired up.
If you actually have the S board, let us know because the R board and
C module are considerably different.
Richard
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