Latest from Charles Platt

Figure A

Build a carnival-midway strength tester game using strain gauges and a comparator chip Read more »

cat shelf 4

This light-duty floating shelf hangs mysteriously with no visible support. Read more »


A multimeter is an indispensable tool for working with electronics, and can give you a better idea of what's going on inside your circuits. Read more »


This tin foil instrument can control a 555 timer and add interesting audio effects based on the principle of capacitance. Read more »


Red light won't confuse your circadian rhythm like bright whites do. Sleep easy with this dimmable red LED night light. Read more »


Build a multifunction sound synthesizer using a surprisingly fun audio chip. Read more »

Photo I_1

Build a clever timer circuit that draws no current at all between cycles — zero power! Read more »