Black Rock

 Recreating OPL     The Psion Organiser II came with an on-board programming language called OPL. I had an organiser in the 80s and used it ...

 Making and Populating a Raspberry Pi CM4IO PCB RP CM4 The RP CM4 (https://datasheets.raspberrypi.com/cm4/cm4-datasheet.pdf) is a small proc...

 Stainless Steel Sewing Kit Quite a while ago I bought a stainless steel cigar tube with no real idea what I'd use it for. I knew I'...

 What do you do if you want to dump the ROM in some equipment that is owned by someone else, who is happy to have their ROMs dumped, but who...

 This One Got Away From Me a Bit... I make pen sets occasionally, and to go with the set I make boxes. These are to hold the pen set and all...

 Pens, Scutoids and a Box A combination of biology and mathematics was the theme for a recent pen box. It turns out that scutoids are a newl...

Coding With Rules of Thumb I create code quite a bit and have fallen into a process of using 'Rules of Thumb'  or 'Meta Patterns...