RE: I'm Board...Cutting Board to Printed Circuit Board

colporteur — Sat, 19 Feb 2022 16:52:59 GMT

An update to the post. The Chutes and Ladder prototyping exercise continues.

A working sequence of code is being tested that resolved the Inquiry post I had made some time ago. Using suggestions provided in the post, displaying serial messaging, was the key to flushing out what was actually happening. A chronic problem of me mentally reversing logic levels doesn't help matters.

Information discovered during perf-board testing highlighted some details not provided during the block diagram development stage, resulting in the processing taking a chute back to the beginning of the design process. Mechanical turnouts, i.e. devices that switch the tracks, requiring pulse triggering and not steady voltage triggers, along with the devices drawing over 2 Amps caused some consternation. The 200ma transistor circuit to power the turnouts just wasn't going to cut it!

I confess I am not surprised. The prototyping process that I have documented has been used throughout my career. It all comes back to that all-important beginning of the requirements stage. What do you want it to do?

It is extremely important to have a prototyping process to accommodate the "I don't know, what I don't know but now that I know it, I have to be able to be able to deal with it."

I tell model railroaders I'm not into model trains. I like animation projects but trains no som much. They are continually surprised to discover I actually don't know what they are talking about.

RE: I'm Board...Cutting Board to Printed Circuit Board

Jan Cumps — Mon, 31 Jan 2022 22:16:13 GMT

Is your train a Jouef?

RE: I'm Board...Cutting Board to Printed Circuit Board

robogary — Mon, 31 Jan 2022 17:52:50 GMT

very nice. I usually stop after the perf board. What drives your decision to create and produce a PWB ?