Looking for ideas on this project - Page 2

MaxGuitar · 6th January 2005, 08:23 PM

Ok guys, I ordered all the parts from mouser. they should get here soon.
While I knew the values, I had no idea what variety of capacitor I should use... they were so cheap that I got a ton of different values and materials... ceramic, film, polyester, etc. I'll try to create a setup where I can easily interchange the caps to see if there's any difference in the sound output.
I'll let you guys know when the parts arrive.

MaxGuitar · 11th January 2005, 05:12 PM

Alright, the stuff is here!

How in the world do you wire a circuit up to such a tiny microchip??? This thing is like 1/4" by 1/2" and it has 14 pins coming out of it! Can you just use a regular soldering iron?

Guess I'll get to work on my accuracy. I would just worry that it would be really easy to fry the chip.

Any advice? thanks.

max

raypsi · 11th January 2005, 11:41 PM

A temp controlled solder station would be a good start, some can be had for dirt cheap prices. A micro fine tip of say 1/16" either conical or screwdriver shape. A straight iron of 30 watts is good. With inter-changeable tips are the boss. Make sure you tin the tip before it gets to hot, on first time running. A swing o lamp with a magnifier built in is a must.

I like using ic sockets for prototypes. As for soldering: the IC generally can take an iron tip on a single pin for 10 seconds. Any longer than that you are going to be living on the edge.

63/37 solder is the best, 60/40 is acceptable and solder must be resin core.

Lastly, soldering is a fine art. you'll love tacking on little SMD's.

Enzo · 13th January 2005, 05:09 AM

If you have never soldered on a pc board before, consider building a simple kit first to get some practice. There are many small simple kits involving a chip or two. SOme blink lights and others make noises, but for a few dollars you can get something and get some practice doing the work. That is better than damaging your real project.

BbbyBld · 16th January 2005, 02:29 PM

They are kind of noisy, but I might build on a breadboard first. If you plan on experimenting regularly, you should probably get one. The first kit you build could be a variable power supply--you will need one of those too.

11th January 2005, 11:41 PM	#13
raypsi diyAudio Member Join Date: Jan 2005 Location: middle earth	get out that 100W iron j/k A temp controlled solder station would be a good start, some can be had for dirt cheap prices. A micro fine tip of say 1/16" either conical or screwdriver shape. A straight iron of 30 watts is good. With inter-changeable tips are the boss. Make sure you tin the tip before it gets to hot, on first time running. A swing o lamp with a magnifier built in is a must. I like using ic sockets for prototypes. As for soldering: the IC generally can take an iron tip on a single pin for 10 seconds. Any longer than that you are going to be living on the edge. 63/37 solder is the best, 60/40 is acceptable and solder must be resin core. Lastly, soldering is a fine art. you'll love tacking on little SMD's. __________________ semper fi

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6th January 2005, 08:23 PM	#11
MaxGuitar diyAudio Member Join Date: Dec 2004 Location: VT, usa	Ok guys, I ordered all the parts from mouser. they should get here soon. While I knew the values, I had no idea what variety of capacitor I should use... they were so cheap that I got a ton of different values and materials... ceramic, film, polyester, etc. I'll try to create a setup where I can easily interchange the caps to see if there's any difference in the sound output. I'll let you guys know when the parts arrive.

11th January 2005, 05:12 PM	#12
MaxGuitar diyAudio Member Join Date: Dec 2004 Location: VT, usa	Alright, the stuff is here! How in the world do you wire a circuit up to such a tiny microchip??? This thing is like 1/4" by 1/2" and it has 14 pins coming out of it! Can you just use a regular soldering iron? Guess I'll get to work on my accuracy. I would just worry that it would be really easy to fry the chip. Any advice? thanks. max

13th January 2005, 05:09 AM	#14
Enzo diyAudio Member Join Date: Sep 2004 Location: Lansing, Michigan	If you have never soldered on a pc board before, consider building a simple kit first to get some practice. There are many small simple kits involving a chip or two. SOme blink lights and others make noises, but for a few dollars you can get something and get some practice doing the work. That is better than damaging your real project.

16th January 2005, 02:29 PM	#15
BbbyBld diyAudio Member Join Date: Oct 2004	They are kind of noisy, but I might build on a breadboard first. If you plan on experimenting regularly, you should probably get one. The first kit you build could be a variable power supply--you will need one of those too.