Arduino Battery Gauge – Input Voltage Measurement Board

Here’s a short little post to show something I made a few years ago.  It’s a simple, tiny board with a couple of resistors that is used to measure the input voltage.  It uses a simple voltage divider to reduce the voltage from the raw input pin and allow the conveniently close analog pin to read it.

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Current Capacity of Wires and Traces

I’ve been looking at the maximum current ratings of both wires and traces and have had a hard time finding good numbers.  So this is a collection of what I’ve found but limited to the ranges that I normally use.  There are lots of very advanced calculators online but I had difficulty finding a nice clear chart.  So I hope this helps others or at least helps me next time I need to look it up. Continue reading “Current Capacity of Wires and Traces”