HMI?! HMI stands for Human Machine Interface, which is a fancy way of describing an element that enables the interaction between a human and a machine. In this case, we will be talking about HMI displays. In particular HMI displays manufactured by a company called STONE. What makes their screens different to regular touchscreens? Well, […]
Tape recorders, computers and capture cards all seem to be happy to accept a microphone input for adding audio or voice-overs, but very few have a “line input” to overlay music or any other “strong” signal source instead.
One of the things I’ve been interested in for the last year or so, is developing for the Atari family of 8-bit computers. I haven’t done a lot yet, but I’ve been slowly getting software, docs, and hardware to start writing code with all the tools I could possibly need. I had already built a […]
I’ve had a VC99 multimeter for a while, and one of the nice things about it, is that it can be hacked to give it RS232 output pretty easily. The hack is possible because the VC99 uses a rather standard DMM chipset that has serial-output capabilities built-in. You can check if the feature is there […]
It happens that I quite like scientific calculators, and lately I’ve been adding a few to my collection. Several calculators are CAS (“Computer Algebra System”)-capable, meaning they are powerful enough to do symbolic / algebraic processing, and thus are able to understand and manipulate algebraic expressions containing any mix of unknowns, operators and numbers, and […]
A couple of months ago I was asked if I could prepare a sort of workshop on one of my favorite topics: ASM Programming for PIC microcontrollers, which I of course accepted on the spot. Now, I wanted to include a couple of “hands-on” lab sessions in this workshop, and because of this, I needed […]
You don’t see them around that much anymore, but a few years ago the ESP-01 modules took the world by storm as quick “serial to wifi” bridges for microcontroller projects. With a few serial commands you could quickly connect even the most basic microcontroller to the internet over Wifi!
It took me a really long time to do this second part of my Pi-based Logic Analyzer project, mostly because of two things; the first one being that at one point (after I had pretty much all the case design, extra hardware and software tweaking done for my RPi1) I decided to switch to a Raspberry Pi […]