• PDP11HackPlus,  Personal,  Synths,  TTL CPU

    Time & motivation

    I am still struggling with my mental health, though it is getting better slowly. I’m getting a bit more motivated and I’ve been some work for Isla Instruments, which is a refreshing change. I’ve had an idea for another synth, curse my head, so I’ve jotted it down and put it in the “laterbase”.My current plan is to get the Synth Voice module I designed completed and running (I have PCBs), work on the Isla Instruments project (which will be on going) and do some bits on Epsilon when I get stuck with that and need to free my mind up a little. I’ve put a self imposed ban on…

  • PDP11HackPlus,  TTL CPU

    Start of something new & daft

    I’ve long had an interest in computers, older computers that is. I mean I grew up in the 80s and that was the era of computers, I had a VIC20, C64 and so on. But what was missing was the blinking lights, which was part of the idea behind the PJ5CPU project (Under the TTL CPU category). Now I also like obscure things and the DEC DCJ11 CPU is one such chip, it is essentially a PDP11 on a chip minus the RAM and peripherals (floppy disk, hard disk, serial, etc), I’ve been after one for a while but didn’t know what I’d do with it, anyway one came up…

  • Repairs,  Synths,  TTL CPU


    I thought I’d move away from so called “social media” due to the increase in far right extremism, bigotry and general hatred in the world. This is a shame as I’ll miss a lot of the people I follow on twatter, faceprat and so on, but for my own mental health it’s time to move on. So I’m here to talk about random tech things I find interesting, maybe update on some of the more tech points of my synthesiser projects and certainly share posts of the odd repair job I do. I’m also working with a friend, Jon, on building a CPU entirely out of TTL logic chips which…