EDE702 where?

[karenhornby]

Anyone know a place in UK to get some of these?
looking at the specs it looks exactly what i need to remotely mount an LCD but have the controller a few feet away

[Melanie]

I cannot believe you are considering spending money on a part, where a simple PIC (like a 16F628 or similar) for 90p and a dozen lines of PICBASIC code would do the same thing. BTW are you aware that Darrel's taken a parallel LCD (search this forum) and run a near infinite length of wire on it and it still worked? 'A few feet' hardly seems to warrant the effort.

[Acetronics2]

And you know the best ???

The EDE circuits ARE programmed PICs ...

no, no, Karen ... don't cry ...

Alain

[karenhornby]

I cannot believe you are considering spending money on a part, where a simple PIC (like a 16F628 or similar) for 90p and a dozen lines of PICBASIC code would do the same thing. BTW are you aware that Darrel's taken a parallel LCD (search this forum) and run a near infinite length of wire on it and it still worked? 'A few feet' hardly seems to warrant the effort.

Umm no I didn't know that
What I want to do is mount the LCD remotely but only use a minimum amount of wires if that makes sense, I was thinking about i2c bus but I know nothing about that at the moment, then thought of serial so thought it might be the easiest
However if the length of the wired dont matter then all I really need is 8 wires (including + and -V so it's not as bad as it seems, i was just hoping to use a "standard" type connector like usb with 4 wires and so on.

And you know the best ???

The EDE circuits ARE programmed PICs ...

Grrrrrr.....
what a rip off!
although it is a novel idea, if only I was confident enough to program a chip to do it, but at the moment I've still no idea how serial works lol!

[skimask]

However if the length of the wired dont matter then all I really need is 8 wires (including + and -V so it's not as bad as it seems, i was just hoping to use a "standard" type connector like usb with 4 wires and so on.

Depends on how long of a wire you're talking about. If it's not too long, a standard 3 wire stereo headset extension might do the trick (V+, Grnd, Serial Data) and be cheap. Hook it up, and see how fast it'll go before the data starts to get flakey.
Most off-the-shelf serial LCD modules will only go 'so slow', maybe 2400baud. The slower you send serial, the farther you can send it over a regular chunk of wire. So, if you end up building your own module (which is very very easily done by the way), you could, in theory, make it as slow as you need, or get all sorts of complicated (RS drivers, error correction, the whole ball of wax).

Here's a good start on the whole serial LCD backpack thing:
http://www.picbasic.co.uk/forum/show...erial+backpack

[karenhornby]

if you end up building your own module (which is very very easily done by the way), you could, in theory, make it as slow as you need, or get all sorts of complicated (RS drivers, error correction, the whole ball of wax).

I'll either just use a standard lcd (which I have) and use longer wires and see if it works, or as I'm about to go check the info you suggested I may make my own serial interface (then got to learn how to program/use serial lol)
unless anyone comes up with other ideas.. all welcome
just out of curiousity, how easy is it to use an i2c bus? I see chips on ebay that "aparently" connect direct to a parallel lcd but the input is just i2c ?

[skimask]

I'll either just use a standard lcd (which I have) and use longer wires and see if it works

Probably won't work reliably with any sort of distance between point A and point B.

or as I'm about to go check the info you suggested I may make my own serial interface (then got to learn how to program/use serial lol)

The serial LCD is a piece of cake and the code is right there at that link...some tweaking for your needs and you're in there.

unless anyone comes up with other ideas.. all welcome
just out of curiousity, how easy is it to use an i2c bus? I see chips on ebay that "aparently" connect direct to a parallel lcd but the input is just i2c ?

I2C bus? Not so easy. PBP only 'speaks' I2C Master, not slave, at least not without a lot of effort. An I2C LCD on eBay? Don't think I've seen those yet... Serial...Yes. I2C sounds like more trouble than it's worth.