As the title suggests, this is a place for tips, tricks and things to turn over and over in the mind...
Sometimes, ya just gotta do, what ya gotta do.
So I needed to see 6 signals during debug of my new class lab loadboard. A logic analyzer wasn’t immediately at hand, but a number of 2-channel scopes were.
I set each scope up for external trigger, and then connect the external trigger inputs to the same reference on the board. Bingo! Six scope traces all sync'd up.
Updated 12-03-2011 at 11:15 PM by davejames
Here's a classic case where the project wasn't well documented...
...ok...the yellow wires go to the inputs, and the purple wires go to the outputs...no...um, the WHITE wires go to the inputs and the BRONZE wires go to the outputs......wait a minute....no...the bronze goes to the purple and.....no.....uh....oh crap!
If interested, follow the effort at:
Updated 10-30-2011 at 12:00 AM by davejames
The recently debuted Builders sub-forum was the catalyst for this entry. I'm sure the focus will be "old news" to many builders here, but I'm hoping it may provide some useful information for any newbies.
The question arises, when starting a new project that includes machining a chassis, how does one go from here...
...to here without tearing up the metal and ending up with reasonable hole alignment?
Updated 09-15-2011 at 05:14 PM by davejames
Thanks to all that have read and commented on the the original post.
This is a follow-on post concerning a video recently done that covers the history of the wah-wah pedal; from the inventor to contemporary users.
It's about an hour long.
So, put on the paisley, light some incense and enjoy the nostalgia!
For the more modern interviews, I have no idea what to wear...
Updated 09-15-2011 at 05:15 PM by davejames
My latest project required monitoring a number of button switches, and a shift register was used to transmit the "button X was pressed" information to a BS2 that sits in a tight programmed loop watching for shifted-in data.
The problem with this is that the button press is asynchronous to the BS2 loop and/or the BS2 loop is asynchronous to the button press...either way, potentially missing the button press was a huge problem.
So I said
Updated 09-27-2011 at 06:42 AM by davejames