And #137 is coming along.

[Jayaretea]

I was late placing my order and then once the kit arrived it took awhile before I started the build. It mostly went well with a few hiccups along the way. First problem was getting the switches aligned. After a few failed attempts I resorted to adding a few at a time until all were in and aligned. Then there was the speaker panel. Don't know what I did, but I'm sure that it was my fault, the audio didn't work. I ended up pulling the audio module out and testing with a signal generator and o-scope. It was bad, so off to Amazon for a new one. The dongle was also bad and had to be replaced. I received audio from one channel of the dongle but not the other. The new dongle and audio module work but the audio is horrible, lot of noise. Is anyone else seeing (hearing) this?

I'm new to 3D printing and used the opportunity to design and print a few pieces for my PiDP-1. For starters, I printed a spacer to fit between the Pi 5 and the PCB, for electrical short prevention. Once I determined where I wanted to place the name plates (Ref R & Q), I printed L-shaped spacers to keep them aligned while I stuck them down. Also, I don't care for the look of the little push button at the lower left, but I did want it and use it, so I printed a key cap for that button.

What's next, I'm a long retired software engineer and I'm looking forward to learning PDP-1 assembly language and trying my hand at a few simple programs. I learned to program back in the days when we debugged and patched code on maintenance panels, similar to that of the PDP-1.

[Matthias Barthel]

nice build! have fun with your pidp1.
for starting programming the document i have attached is very helpful, or the tutorials from oscar (https://obsolescence.dev/pdp1-programming-introduction.html)
this here is also very interesting : https://hackaday.io/page/10251-hello-world-60s-style


Matthias

[MICHAEL GARDI]

In the same boat as you, retired software guy. I just finished my first simple PDP-1 programs based on Bresenham’s line algorithm. I found the following both super interesting and useful when getting started:  

https://www.masswerk.at/rc2016/10/

Have fun,

Mike

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[Jayaretea]

maklumatp... and michai..., Thanks for the links. They will be helpful.