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rycov · 03-20-2011, 05:28 PM

any one know if i can use this old samsung charger, for the transformer? it says output: 5 v--0.7A.

mikemoss · 03-20-2011, 08:33 PM

That should work fine.

I like what junkster said about using W and Y rather than G for the 2 SSR controller.

rycov · 03-20-2011, 09:14 PM

i do to. i don't know much about electronics and thats seems to be what the instructions that came with the thermostat said.

jmferris · 03-20-2011, 11:06 PM

Quote:

Originally Posted by rycov

also please post some pictures when you get it done!

Sadly, I am going to have to wait at least one more day to finish up. The junction box itself is built out, and the "always live" side works well. In my infinite wisdom to go with phono jacks in the enclosure, I seem to have forgotten the fact that it commonly uses a shielded cable. I can't find any dual-stranded cables in my big box o' crap, so I'll have to make a few. It would be a PITA to otherwise hook up to the thermostat.

This is what it looks like, as it sits right now. Still have to label my external connections and run the wires to the thermostats. Should only need another ten minutes to solder and heatshrink the new cables once I get the jacks tomorrow. Forgive the crappy phone-quality image:

So, tomorrow it is off to Rat Shack to pick up some phono plugs so that I can run a dual-stranded wire off of each of them. At least since I have yet to have the relays go hot, I can proudly say that I haven't burnt down the house today.

rycov · 03-20-2011, 11:56 PM

looks good so far. don't forget to update us when you get it all final

rycov · 03-22-2011, 01:20 PM

ok. another dumb question from my non-electricity understanding ass. i bought two relays. figured i needed the DPDT the one i got is eight pin. is this right? after reading a bit on relays it seems like i should have gone with the SPDT. i went to radio shack and they didn't have any that looked like the ones from the OP. please help!

and jmferris, don't forget about the update pics!

shildebr · 03-22-2011, 01:50 PM

Quote:

Originally Posted by rycov

ok. another dumb question from my non-electricity understanding ass. i bought two relays. figured i needed the DPDT the one i got is eight pin. is this right? after reading a bit on relays it seems like i should have gone with the SPDT. i went to radio shack and they didn't have any that looked like the ones from the OP. please help!

and jmferris, don't forget about the update pics!

The OP used solid state relays, are the ones you bought SSR or coil type?

When I built mine, I only used one SPST coil relay, (You would use two if you were cooling and heating. I was only cooling).

The SPST I bought has 4 terminals and is in the "normally open" position, so that when power is applied to the coil, the circuit is closed, turning on the fridge.

rycov · 03-22-2011, 01:54 PM

mine were coils. i didn't know any better. and i bought the DPDT, they were eight pin. can i still use these? or should i take them back to radio shack?

shildebr · 03-22-2011, 02:17 PM

You can still use it, its just not necessary.

See in this diagram, each pole is normally contacting one throw or the other.

When voltage is applied to the coil, each pole switches, and contacts the other throw.

You only need one of those poles, and one of these throws, meaning you will have a lot of unused pins.

Not a problem, just not necessary.

rycov · 03-22-2011, 03:50 PM

ok. so what i want to do is connect the bottom two, that are turned perpendicular to the others, to the thermostat and transformer, then connect the wires from the wall to the outlet through two of the other poles? does it matter which ones i use? also it looks kinda little to be running 120 volts through.