Current Engineering Project

I keep this engineering notebook more for my own use more than for any other reason. It's invaluable when trying to find a solution to a problem I know I've solved before. You are welcome to browse though it to see what it takes to build a SETI station. Questions or Comments? Email me: Seti@SETI.Net

You can access earlier chapters from the main menu (Engineering | Notebook) or use the custom search below. This section changes a lot so refresh your browser and Let Google do the search for you (below):

Google Search of SETI Net

Volume 12 Chapter 72

405 Stoping Windows 10 Updates 2018-02-07

Windows updates are thrashing me. When ever one happens I have to reset my system to account for the changes it brought with it. Most of the changes are important and I do want them but I want them when I WANT THEM not when MS decides to send them out.

This is the way to postpone updates under your control.

  1. Open the Run command (Win + R), in it type: gpedit.msc and press enter
  2. Navigate to: Computer Configuration -> Administrative Templates -> Windows Components -> Windows Update
  3. Open this and change the Configure Automatic Updates setting to ‘2 - Notify for download and notify for install’
  4. Open the Settings app (Win + I) and navigate to -> Update and Security -> Windows Updates. Click ‘Check for updates’ which applies the new configuration setting
  5. Restart

404 Lost in Time 2018-01-30

While I am waiting for the orders to come in for the Pixel material decided to take a closer look at my equations of time. I think I have some problems.

I make heavy use of 'Practical Astronomy with your calculator' third edition by Peter Duffett-Smith. This book has easy to understand calculations for all the various formula needed to calculate time for a SETI station. I decided to get the latest version of the book in the hopes that it clears up some confusion that has been giving me fits. I downloaded the latest from Amazon ($30) and it started right up as an eBook - good. This addition of the book is written around Excel spreadsheets unlike that last version which should help clarify some other problems I was having.

Then I attempted to download the spreadsheets. I went through all the usual rain dance with Captcha and submitted it to Cambridge, the publisher. Nothing. Again and again Nothing came back.

I attempted to call Cambridge customer service (don't bother) and finally resubmitted the Captcha with my crummy gMail account rather than my own. This time it worked.

So I will be checking all my time equations against the spreadsheets. Stay tuned.

403 KiCAD Training 2018-01-26

have decided to make KiCAD, which is an open source (and free) schematic capture and board layout system, my basic hardware development tool. To use it I need training - its not falling off a log simple. So I am starting a Udemy class:

https://www.udemy.com/learn-kicad-printed-circuit-board-design/learn/v4/overview

Its free so why not.

Why not? - well I'll tell you why not.
After a few hours of working on this course and making adjustments for the fact that the instructor was using a very early version of KiCAD I finally gave up.
Not being a quitter I moved on to the next to free course on KiCAD. We will see how this goes.

As expected the free courses were worth every penny paid for - Don't bother.
I did find a very good course from Udemy the Online school. This class "Tech Explorations KiCad like a Pro" is very will organized, up-to date and useful. If your trying to learn KiCAD for $15 it is hard to beat.

402 SETI Pixel Cosmic Ray Detector 2018-01-16

I have received two SiPM's from sensL ($150) and two pieces of scintillation plastic from (BC-480 5cm X 5cm X 1cm) from iradic via eBay (item 263355405917 $60). This is cut and polished just for the CosmicWatch project.

Most of the other parts needed are on order and will arrive over the next month or so. The PC boards from ELECROW are problematic. The order for two sets went it but I think they have a problem with their web site. I'll have to check back on it.

I decided to hold off on ordering the cases and laser cut front panel because they come from ELECROW as well and because the pixel can be built without them.

I give up on ELECROW. They are having problems with their web site and don't seem to respond to my eMail messages outlining the problems. I have switched to seeed studio which seems to have a better handle on the process.

Order was placed for two pcb's cost was $35 or so with a promise of a quick delivery.