Hi PICsters,
I have a really interesting problem that I wish someone could help me with.
I have constructed a watering system controller for my grandmother which is
supposed to eliminate the need for her to water the garden. All I am doing
is looking for sunlight through an photodiode, counting a number of delays
that would equate to around 5 hours, set a bit that corresponds to the water
valve ( this in fact turns on a relay that activates the 24vDC water valve),
waits for half an hour, turns off the valve then does nothing at all until
it sees night and does the whole thing all over again the next day. Simple
is it not? The code is even simpler and when I have shortened the delays to
minutes instead of hour it works fine. Power supply seems O.K, (12 watts),
PIC is 16C84 and the whole thing sits under an acrylic dome. Anyone hear of
heat or light affecting the PICs as it seems to be latching up not turning
off the water valve. I don't think it would ever get more than 40 or 50 on a
hot day   ( degrees C ). Any ideas??

                                                                        John

                -----Original Message-----
                From:   Emil Hristov [mailto:e_hristov@YAHOO.COM]
                Sent:   Friday, 10 March 2000 4:23
                To:     PICLIST@MITVMA.MIT.EDU
                Subject:        Help! 24C16 to 16F877

                Hi all,

                   I try to write and read to/from EEPROM but I don't
                succeed.
                   If anyone have more experience of I2C EEPROMs and
                16F877 let me know.

                Thanx in avdance.

                Emil
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