LEDs are polarized components. Backward, they just don’t light on.
How to recognize the polarity of a LED?
Continue reading How to determine Through Hole LED Polarity?
How to determine Through Hole LED Polarity?
How to Hand Solder SMD
Hand soldering Surface Mount Devices (SMD) scares a lot of builders, but it is easier than what it looks like. Even sometimes, it’s easier than soldering classic Through Hole Components. Really!
Updated on March 24th, 2021
Continue reading How to Hand Solder SMD
Simple Mixer with 3 Mono Inputs
A quick post about an old design.
This is a simple 3 mono input mixer.
Continue reading Simple Mixer with 3 Mono Inputs
Passive Multiple
The Passive Multiple is the simplest module you can find in a Modular Synth. But you really need a bunch of them.
Continue reading Passive Multiple
Simple LFO: New Documentation
I’m working on improving my projects’ “documentation and build instructions”.
This is the next update:
Attention! This is an OLD version!
An updated and improved version is available!
An updated and improved version is available!
Attenuator-Inverter: New documentation
This is an updated documentation and build instructions for the Attenuator-Inverter module:
ITT MX20 Multimeter Teardown and refurbishment
A friend gave me an old defective ITT MX20 Multimeter.
The multimeter is still currently sold under various brands. It’s a very rugged, IP66, electricity oriented multimeter.
Continue reading ITT MX20 Multimeter Teardown and refurbishment
“KiCad BOM Wizard” error on Ubuntu 16.04
In my previous entry on how to generate a BOM in KiCad 4, I wrote about “KiCad BOM Wizard” from hashdefineelectronics.com which can produce both CSV and HTML output.
Their website is well documented. But I wasn’t able at first to use that script on my Ubuntu (xubuntu 16.04).
Continue reading “KiCad BOM Wizard” error on Ubuntu 16.04
How to generate a BOM in KiCad 4.0
I’m switching from KiCad 3 to KiCad 4.
While version 3 offered a simple, quite un-customizable, CSV generated BOM, version 4 now only offers a raw XML export.
As KiCad website says:
BOM generation is extensible via Python scripts or XSLT, which allows many configurable formats.
“many configurable formats” This is great! It’s even possible to use any program or language other than Python and XSLT to translate the XML in whatever format pleases you.
The downside is, it requires additional steps before you can actually generate a BOM. It seems a bit complicated but it’s not. Read below.
Ground is Not your Negative Rail
Unfortunately, the PSU you just bought isn’t adequate for your Eurorack system?
It’s common to be confused by the “-V” label.
Yes, “-V” on a PSU is a “negative” output, but only compared to the positive output. Your synth needs more!
So, what is the difference between “-V” and “ground”? How to select and use a proper power supply for your Synth?
Continue reading Ground is Not your Negative Rail