Hot on the heels of his outstanding Composite Video on a Scope hack, Alan Wolke shares some fundamental tips on measuring the frequency of a signal using an analog scope. This is of interest to beginner digital scope users too: it’s easy to assume that the frequency figure given by your DSO is accurate, but there are lots of reasons why it can be off. There may also be times that you want to measure the frequency of a signal riding on top of another, more prominent signal, so this is a valuable skill to have.
Nice work, Alan!
Eink, E-paper, Think Ink – Collin shares six segments pondering the unusual low-power display technology that somehow still seems a bit sci-fi – http://adafruit.com/thinkink
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.