Sun Jan 16 19:04:22 EST 2011
I've been looking into some straightforward way to make prototypes.
What I want to do is very simple: analog circuits with a lot of
discrete components. However, I feel I loose too much time on
building and debugging bad solder joints.
* I've been using pad-per-hole perfboard for a while. I like it
better than stripboard because it's possible to design a fairly
compact 1-sided PCB with fat tracks and copy it using component
* Home-made etched PCBs. It seems that most options are quite a lot
of work. Toner transfer, etching, drilling.
* Home made milled PCBs. Requires some equipement.
* Fabbed PCBs. Either expensive, or long lead time.
* Wire wrap. I'm gathering some tools to try it out, but it seems
* Combination soldering / wire wrap. Might be best for what I want
to do, but need to try first.
One thing I ran into though is the over/under rule for wire wrapping.
Put in all your level 1 to level 1 wires first, then the level 2
to level 2. The only level 2 to level 1 wire should be at the end
of a chain. If you follow this rule, you never have to take off
more than 3 wires to make a change.
I wonder if this approach makes sense for pad-per-hole breadboarding
too: don't worry about component placement or bending wires, just
construct all nets as chains with max 2 connections per component pin.