USB Controlled Relay Board or general output

**2k1Toaster** · 02-05-2007, 10:36 PM

I am not sure about the pricing. I would like to get some feedback on that.

What is a fair price for you guys. Let's assume 2 versions. 1 with 8 relays, 1 with 16.

**2k1Toaster** · 02-05-2007, 10:39 PM

And just so you get an idea on what I have to solder:

**e30_droptop** · 02-05-2007, 11:01 PM

When you solder each side of the chip just slather one side with alot of flux and then tin your iron. Slide the freshly tinned iron with solder upon it perpendicular to the pins and it will do one entire side of the pins in one fell swoop.

**2k1Toaster** · 02-05-2007, 11:04 PM

Yeah I have heard of that working, but last time I tried it that way, it all just bunched up. I spent quite a while undoing that. I have not soldered many surface mount components.

**RedGTiVR6** · 02-06-2007, 07:37 AM

just a tip that might be useful in the future: http://www.radioshack.com/sm-45-watt...i-2062731.html

That's what I used when I desoldered the jacks on my sound card. I've also used to to correct some mistakes and to clean up some solder joints. Might be useful for you in this instance.

As for price, I'll say that it should be roughly the same as others avaliable if possible.

**durwood** · 02-06-2007, 08:05 AM

Originally Posted by 2k1Toaster

I am not sure about the pricing. I would like to get some feedback on that.

What is a fair price for you guys. Let's assume 2 versions. 1 with 8 relays, 1 with 16.

I don't know how much you spent on supplies so I am totally throwing this out there. You can tell me to go pound sand if you want and tell me what is reasonable. I just need the 8 relay one. The relay's have to be able to withstand maybe 20-25A I think (Maybe a little less)? I need it to switch speakers on and off at turn on/off with an amp outputing about 50Wrms to 4 ohm speakers.

$30-40?

**2k1Toaster** · 02-06-2007, 08:10 AM

Originally Posted by RedGTiVR6

just a tip that might be useful in the future: http://www.radioshack.com/sm-45-watt...i-2062731.html

That's what I used when I desoldered the jacks on my sound card. I've also used to to correct some mistakes and to clean up some solder joints. Might be useful for you in this instance.

As for price, I'll say that it should be roughly the same as others avaliable if possible.

Well I don't have a desoldering iron, I do have wick though which basically does the same thing. The problem I had was the common hand soldering method for sufrace mount components, is to slather it in solder, and then quickly put it on the PCB. If all goes well, then the solder sticks to the PCB and not to the other pins. It has some magic trick that I have not as of yet conquered.

I just might though, because I ordered some more surface mount parts for some other components, just to test my luck!

**2k1Toaster** · 02-06-2007, 06:07 PM

For the high current relays, is 30A acceptable? I can't see too many applications where over 30A would be neccessary...

I found a good price (~$2) on some relays that are PCB mountable, and they have a 30A max for the contacts.

Anyone need anything higher?

**RedGTiVR6** · 02-06-2007, 06:22 PM

I don't see a need for anything over 30 in most situations.

On our truck we have two 70 amp relays for the Viper fan we're running...but that's a special circumstance...lol