At their heart, computer processors run machine code. This is the series of 1s and 0s called bits(Binary digITS) that the device translates into voltage highs and lows used to control the display, keyboard, motor, switches, lights and so forth, in whatever system it’s being used. This is true whether the device is the CPU in your laptop, the microcontroller… Read More »The Basics of Programming
USB was originally designed as a replacement for the various serial and parallel connectors for computer peripherals. Back in the mid 1990’s, portable computers were becoming more popular and the industry wanted a standard interface that used a smaller connector. As well as carrying data, USB also added the ability to carry power. A single cable could be used both… Read More »Choosing a USB Power Delivery Power Bank
I thought it would be a fun project to see if I could quickly and easily assemble a full pedalboard of tuner, distortion, delays, modulation, and reverb with a small footprint and for a low cost, just using parts I could get on Amazon Prime with a Mission 529 power supply. Here’s how I did. There’s a full Bill of… Read More »Building a Small Pedalboard
Some people believe that modern switching power supplies and DC-DC converters are noisier, and that using a traditional larger AC power supply is going to be quieter. Others think that using a battery and isolating the pedalboard from wall power is going to avoid AC noise, ground loops etc, and so this will be quieter. So, which is correct? To… Read More »Power Supplies: Which is More Quiet?
A digital multimeter (DMM) is an invaluable piece of equipment for any guitar player. One suitable for most guitar related duties will be under $20, and $90 will get a good one that should last a lifetime. Even if you are not particularly technically inclined, there are a number of simple multimeter tests that can save countless hours in set-up,… Read More »Multimeter: The Invaluable Tool
Here’s a quick challenge: You want to make the most dramatic change possible in both the look and sound of a guitar rig, but can only change one item. What do you choose? Hands up all those who said speaker cabinet. It may not have been the first thing that came to mind, but think about it. How much of… Read More »The Power of Speakers
You may not have thought about it, but when you turn a volume or tone knob on a guitar, or a setting on an effects pedal or amp, some complicated things happen. The little potentiometer that’s hiding behind the knob has some interesting properties. There are already some excellent articles on the web about how pots work, so there’s no… Read More »Of Pots and Tapers
Tubes rule; we all know that. Even those of us firmly in the digital modeling camp still enjoy a good tube amp. There’s something about the warm glow, the smell, and the sense of history that appeals to us. Many pedals require some sort of amplification circuit, so putting a preamp tube or two into a pedal would seem like… Read More »For the Love of Tubes
Have you ever looked at the underside of a pedal or the rear of a guitar amplifier and wondered about all those little symbols such as FCC, CE, CSA, TUV or UL? Why is it that we typically see those on products from the big players, but not on the boutique devices? What exactly does ‘This equipment has been tested… Read More »The Significance of Certification
In this blog post, we are going to take some different cables into the lab, and look at how they stack up in terms of some basic, measurable numbers. In our test, we have seven different cables varying in price from less than $6 to over $250. There are a variety of different core materials and jack plating’s, as well… Read More »Cables: Which Are Best?