12f675_fuse_about_to_blow!

[LEDave]

While you are getting the RF modules figured out you could start on the project using wires.Then all you will have to do is add the RF stuff later on.

Good shout, I like it and I'm on it Boss

I'm thinking two 16F684's SEROUT from one into SERIN on the other to LCD / or Communicator. With a push_button on SEROUT PIC to simulate the beam at this stage with an LDR / potential divider to trigger the 'SEND DATA' at night fall.

How does that sound?

Dave

[mackrackit]

SEROUT is very limited.

Use SEROUT2/SERIN2 .
Then when you get a PIC with hardware serial the syntax will be the same.

[LEDave]

Use SEROUT2/SERIN2 . Then when you get a PIC with hardware serial the syntax will be the same.

SERIN / OUT2 it is. Cheers mackrackit.

I nearly missed that one

Same here, I just add more voltage though...

Dave

[LEDave]

I've been GQQGLING around looking for rfpic info and on several sites I've found articles from people all saying that the rfpic battery had gone flat after only about a week.Has anyone here found this to be the case?

I guess for the project the rfpic will need to be in sleep mode as much as possible to save the battery power.

Dave

[LEDave]

Quick question:

When does an INPUT voltage level on a pin become an INPUT? What I'm clumsily trying to say is that when I use my potential divider (fixed resistor and an LDR) the voltage level will gradually rise until the PIC reads that voltage as a logic 1, will that be exactly five volts or less?

Dave

[mackrackit]

If you are still using the 684 take a look at table 15.5 in the data sheet.
There are two types of inputs, schmit and TTL. One is 0.8 and the other is 2.

How is everything going with the project?

[LEDave]

Hi mackrackit,

If you are still using the 684 take a look at table 15.5 in the data sheet.
There are two types of inputs, schmit and TTL. One is 0.8 and the other is 2.

Yes still on the 684, I'll have a read of the data sheet tonight.

The Project is coming along, I love these PIC's and what they can do (still frustrated at what I can't do mind) When you start a project it's amazing where things lead and what has to be taken into account, example:

The parent birds fly into the box bringing in food and each time they do so they break the beam and a counter (divide by two as we said earlier) gets incremented. Then as night falls the voltage level on the P0T_Divider rises and when it's dark a pin reads voltage 1 and that days data gets rfpic'ed across. However simple little things to consider, how dark is dark? Is a passing cloud 'dark' enough to make the data be sent prematurely etc...? Things like that.

I've been spending time analysing Bruce's rfpic program to try and figure out just what is going on and how it all works. Plus I've been dabbling with some basic assembler...oh dear

It's a good job I've got until next Spring to get this up and running Also learning to program is a great thing to go over the Winter Months too.

So, slow progress, still loving it.

Dave