deskthority

I usually poke around with a multimeter in continuity mode. Is there a technique I should be using?

pic related

What I've typically done is hold one of the multimeter probes on the leg of the diode leading to the controller components, instead of the switch terminal - that way can still use the continuity testing mode with the beep, rather than having to worry about the polarity and watching the multimeter screen.

That's pretty much what I do, and I've surely done less of it!

I think the general rules are:

• Find the pins on controller leading to the matrix
• Figure out which of those are rows and columns
• Follow as much by eye as you can, and use the beeper as your sixth sense
• Draw a grid, label the columns and the rows, and populate the bugger one key at a time
• And do what Oldie says: keep the diodes out of it, bypassing them when dealing with those pins

I'd like to think there's a better way. Anyone?

I figured something out!!!