four buttons on one ADC pin
Motivation Sometimes you just barely get away with the number of available microcontroller GPIO pins to implement the desired functionality — And then you discover that you have no more […]
Category Archives: misc
yet another perpetual pendulum
Introduction Heya. So I found people building perpetual self-exciting pendulums (pendula? pendulae?) and showing them off on youtube. Nice 🙂 So far the most elegant that I know of seems […]
send numpy/csv data to RIGOL DG4202 arbitrary waveform generator via LAN
Another very short one. At work we have acquired a mid priced arbitrary function/waveform generator, the DG4202 by RIGOL (DG4000 series).It has a USB and a network interface. Since I […]
(nothing less than) The Perfect Tea Timer
Motivation Maybe you just drink coffee. Then this article is not particularly interesting for you. But if you like a cup of black or green tea once in a while […]
2 years of toner transfer – tips that won’t hurt you
Motivation I’ve been manufacturing my own PCBs in my basement now for more than two years. It is amazing what you can achieve these days with relatively inexpensive tools. For […]
ignition coil
Why do you call an ignition coil an ignition coil? Because it’s good for igniting things 😀 The ingredients are simple: – Ne555 based square wave oscillator – switching MOSFET […]
interfacing early 90’s HQ digital oscilloscope from LINUX
Abstract In this article I will tell you how to interface with a GOULD 4094 digital storage oscilloscope without proprietary software, i.e. using only Linux command line tools and the […]
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