Help wiring a liner amp

Loki · Post by **Loki** » Wed Oct 03, 2007 7:46 pm

I just got the parts to make a liner amp for the wii and i need help understanding how to wire it up then wireing it to the audio slide. The PDF on bens pages tells you how but i cant fully read schematics yet so im alittle confused. Fast respones would be great.

timmeh87 · Post by **timmeh87** » Wed Oct 03, 2007 8:43 pm

whats a liner amp?

Loki · Post by **Loki** » Wed Oct 03, 2007 8:53 pm

LM386 audio amplifiers for stereo sound

Felino · Post by **Felino** » Wed Oct 03, 2007 9:27 pm

That roughly how you do it, what part are you having issues with?

By the looks of it, you would need 2 for sterio.

Loki · Post by **Loki** » Thu Oct 04, 2007 5:31 pm

well all the grounds confuse me and such and pin 3 points to pin 2 and that confuses me. i just want step by step instructions on how to wire this thing up to the wii.

Felino · Post by **Felino** » Thu Oct 04, 2007 7:35 pm

Read all of this before begining.

Firstly, tie all the grounds together, and well, ground them. Thats the pins 2 and 4 to start off with.

Now, give pin 6 +5v (does the wii have a place to leach this from?) if you can't find a 5v near by, use a 7805 regulater from another source (ask for help if you need it)

Now, grab a double gang 10k pot, and hook the leftmost* (front one) to ground (yet again) the middle to pin 3, and the rightmost pin to your left audio source.

Now to pin 4's ground (i don't think it matters, but hey) hook up your favorite 10 ohm resister, and 0.1uF greencap, this this hooks up to pin 5.

From pin 5 go to your speaker, and from the other side of the speaker, go to ground.

Now repeat this for the right channel, using the back prongs of the volume knob.

Hope that helped!
-Fel.

*Because this is a double gang, it will control both the left and right chanels at once, use the frount row of three for the left, and the back row for the right. You will need two amps for steroi, both using that one pot.

Loki · Post by **Loki** » Sat Oct 06, 2007 2:40 pm

ok thank you i think i can get it now. and the audio slide i have is this one

can you tell me what wires to put on that one and then ill be all done.

Felino · Post by **Felino** » Sat Oct 06, 2007 7:30 pm

Can you tell me if there is conductivity beetween the far righ two pins (top row) and the bottom row of pins, also on the right.

Can you then tell me the resistance beetween the far left and far right pins on one row? (ie the top)

Lastly, the resistance beetween the two pins on the top right row, the two on the left.

Do you have a part number or datasheet?

Loki · Post by **Loki** » Sat Oct 06, 2007 7:44 pm

update.
i tryed to hook it up the way the graph showed but i mostve done something worng, ill talk to my uncle about it first and if he cant help me ill give you guys a detailed veiw of what i did and maybe you guys can help me.

Loki · Post by **Loki** » Sat Oct 06, 2007 7:46 pm

Felino wrote:Can you tell me if there is conductivity beetween the far righ two pins (top row) and the bottom row of pins, also on the right.

Can you then tell me the resistance beetween the far left and far right pins on one row? (ie the top)

Lastly, the resistance beetween the two pins on the top right row, the two on the left.

Do you have a part number or datasheet?

http://search.digikey.com/scripts/DkSea ... P3045DA-ND thats the part number with some data of the slide.

Felino · Post by **Felino** » Sat Oct 06, 2007 9:36 pm

Seems to be only one gang, so mono only methinks.

Loki · Post by **Loki** » Sat Oct 06, 2007 9:39 pm

Felino wrote:Seems to be only one gang, so mono only methinks.

which means?

Felino · Post by **Felino** » Sat Oct 06, 2007 10:45 pm

Well, the slider is only single (right?), meaning that it can controll one volume only, not the two required for sterio (leftright).

Get me?

vskid · Post by **vskid** » Sun Oct 07, 2007 8:11 am

The audio amp looks to be mono, too. I think the slider would work for stereo, as long as you have a stereo amp.

Loki · Post by **Loki** » Sun Oct 07, 2007 11:48 am

well i know really know is that i bought everything that Ben bought and listed on http://www.engadget.com/2007/02/06/how- ... stallment/ thats what i need to wire up.