In the previous installment of this exciting series, I looked at the documentation for the integrated circuits that control the Carver tuner, in particular the TI TC9147BP. Now it is time to see if it actually works as expected. The answer is yes, if after some puzzling over unexpected readings.
I2C is a great interface because it only requires two wires and can talk to a huge number of different sensors, memory chips, and other components. But since its address space is limited, it is possible to end up with more than one component on the same bus with the same address. Here are three ways of dealing with that.
What’s the difference between using shiftOut (which is software) and SPI (aka, hardware) on Arduino, and how does it differ between an AtMega and an attiny? I built a simple test circuit and tested a few different configurations.
It may seem silly to talk about things that didn’t work. But those are the things that you learn from, more than the things that do work. So here are a few things I tried recently in an attempt to log temperatures throughout my house, and which failed to work as expected.
In this video, James “The Bald Engineer” Lewis goes into a lot of depth on the different processes used to create capacitors, the various pitfalls with aluminum and tantalum caps, etc. Lewis works for KEMET, one of the largest makers of capacitors, and clearly knows what he’s talking about.