DIY Controller (Atmel based)

[midgetwaiter]

Originally Posted by kwirky

oh does anyone know how I'd run 120VAC through the relays? They're SPDT. Would I switch the hot on and off and leave the ground connected to the wall supply? I've never worked with AC power and I have to make sure I get things right before I start using it. I don't want to burn anything or even worse get a nasty shock.

Switch hot and wire the neutral straight through. Neutral and ground are different though, makes life easier to keep them separate in your mind.

[kwirky]

on a 2 pronged AC plug, which is the hot and which is the neutral? Is the wider prong the hot?

[digital-audiophile]

[KrazyKuch]

The wider prong is the neutral!

[KrazyKuch]

Hey Kwirky if you have any problems with the code let me know....What language are you gonna program in???

I can program with C of coarse and I'm not bad with assembly!

[kwirky]

Originally Posted by KrazyKuch

The wider prong is the neutral!

hence why I asked

Originally Posted by KrazyKuch

Hey Kwirky if you have any problems with the code let me know....What language are you gonna program in???

I can program with C of coarse and I'm not bad with assembly!

I'll be using C through the gcc/atmel compiler. Assembly would be required for something of extreme performance but it's not like I'm doing frequency generation or the likes. I shouldn't have problems with C. It'll more or less be problems with the poorly documented atmel library for C that I forsee. But like I said i'm not doing anything real complex.

One thing I don't know is how to make a serializing circuit. I understand the programming but how the transistors would go together to "unserialize" the data later is a bit beyond me. It's the electronics that I'm learning as I go.

[kwirky]

I got me some "8 bit parallel serial shift registers"

They're so I can use like 3 pins for 8 pins worth of traffit. mainly for the LCD screen/s.

I got all the 10 pin wire and ends too and a cheap little 500ma power supply. I'll be getting the serial cable tomorrow hopefully then start playing with them on friday.

[banditpowdercoat]

Originally Posted by KrazyKuch

The wider prong is the neutral!

Yup. As an electrician myself, I am very interested in your outcome. Ive been thinking of trying a old PLC5 from work to controll stuff, but the physical size of the chassis are just to huge. Now if only I could get a little SLC processor..... HAHAHA

[Midknight]

So how is this progressing? Are you ready to mass produce yet?

[BC564]

you could alway use a micrologix PLC......